Oninit® Archive
Results for “BTSCANNER”
Changing DBSPACETEMP run-time
Hi, IBM Informix Dynamic Server Version 11.70.FC5XE Please, is there a way to change DBSPACETEMP for a session inside 4GL? ------------------------------ Sincerely, Dennis ------------------------------…
How to detect if table has old-fashioned attached indexes (index pages in non-fragmented table partition)
Hello, does any one knows, if there is a way how to detect tables with attached indexes (in old meaning – index pages are together with data pages in one partition). Curently system catalogs have such indexes, but we can configure such indexes for user tables via DEFAULT_ATTACH e…
Adding primary to a table having duplicate rows
another possibility is to have create unique index stmts default to a non-unique index if the uniqueness fails. That way you get the benefit of having a defined index in place.…
ADO - activex data object
What do I require, to connect "ado activex data object" to Informix ? AIX 7.2 IBM Informix Dynamic Server Version 12.10.FC9W1 Regards Dirk…
SQL using the index
If I find one index has high buffer read, How to know which SQL use this index?…
listener-thread@soc_be.c:3073: err = -25582:
Adding Version details Informix Version : IBM Informix Dynamic Server Version 12.10.FC6 O/S Version : Red Hat Enterprise Linux Server release 6.9 Thanks & Regards, Karthik Rajan…
index compression on Version 12.10
If i want to compress the detached index, Do the create index command lock the whole user table ? it will affect the business. thanks.…
Informix and speculative execution
Hi all, I have seen speculative execution patches for Firefox and SQL Server. Are there speculative execution patches for Informix in progress? There is no IBM Flash for Informix Dynamic Server and speculaative execution! Regards, David.…
Rovoke insert permission but still can insert
I am doing it at the command line in the server directly in the directory C:\\\\Program Files\\\\IBM\\\\IBM Informix Dynamic Server\\\\11.50\\\\bin…
Forein key constraints and indexes
Hi, I have many constraints of foreign key on a table, I notice that this constraints created an implicit index, is that index slow performance when insert or update, If yes can I deactivate this index and what is consequences if I deactivate the index.…
select statement making long transaction
There is no trigger on that table. That's why query return result immediately on proper index hit.…
12.10.FC6 Mac port released
IBM Informix 12.10.FC6 release for Mac OS is officially available! John F. Miller III STSM, Lead Architect miller3@us.ibm.com 503-747-1366 IBM Informix Dynamic Server (IDS)…
tuning HDR
It's been a long time since I've used HDR with Informix 10. It went out of continuing support in 2013. The BTScanner could be a factor in poor performance with the deletes. Was the database logged before HDR was switched on? If it was, then HDR should have minimal additional ov…
index compression
IDS12.10 FC4. I am going to try to compress some big indexes with long keys , e.g., VARCHAR(250), with considerable length of duplicate sub-strings among millions of index keys. Want to get some existing experiences if possible. --- after an index got compressed, its performan…
RSS not working
-bash-4.2$ onstat - IBM Informix Dynamic Server Version 11.50.FC9 -- On-Line --…
Assert Failed: Physical log recovery error
Yes. We had the EMC rep perform a full appliance scan of the disk and mirr= ors. We are rebooting now to see if it clears up. Thanks, ***************************************************************************= *************** Ernie Knox Sr. Technologist, I&TG - Database Managem…
Index Question
Hi All, I would like to seek your comments on the below questions. I've already answered some, but not all. thanks is advance. What's the purpose of creating indices on tables? ANSWER: Creating indices on tables is done for the purpose of making the sorting faster. On the oth…
Truncated table still occupied many pages
Hi Jacob. In that case, you'll need to run the following for each index: ALTER FRAGMENT ON INDEX index-name INIT IN dbspace-name; This will lock the table, though. Regards, Doug…
problem creating idnex on spatial table with scri
I dropped the index - arccatalogue created one . then recreated. the index is created I checked with dbschema. The problem is it is not used. I have used this method for years.…
Informix upgrade
Can we upgrade informix from Dynamic Server Version 11.70 to 12.1 workgroup edition directly?…
Re: btscanner running v/s ready
Thank you Jack. Yes. I have to wait till they decide to upgrade to 11.5/11.7. I did see my other linux server with IDS 11.7 it does show the info. you provided. Thank you for your help.…
Re: btscanner running v/s ready
10? 10 is eol last time I checked. j. On Oct 7, 2013, at 3:25 PM, John Miller iii <miller3@us.ibm.com> wrote: > If you are really interested in how many times it has run and for how = long=20 > it has run on the CPU VPs then=20 > take a look at onstat -g cpu | grep btscanner. …
btscanner running v/s ready
Hi, Where could I find info on "btscanner 0" seen on the "onstat -g act" and "onstat -g rea" output. I would like to know more info and the difference, correlation as to when it becomes ready and when it becomes running. === IBM Informix Dynamic Server Version 9.40.FC3 -- On-L…
when use IfxDataReader.GetIfxDateTime to NULL valu
Hello, The version of Informix products in my environment is: Database server: AIX IBM Informix Dynamic Server Version 10.00.FC5 IBM Informix CSDK Version 2.90 IBM-ESQL Version 2.90.FC4 Client: PC Windows IBM Informix-ESQL 3.70.TC5DE.…
Extract indexes
Hello is there a way to extract only the indexes of a table ? non the whole schema. thanks in advance…
DEFRAGMENT API
Couple questions about the DEFRAGMENT API. How do you do indexes? Has anyone run into any issues with it? Can you make it run the indexes with the table?…
Performance Tuning Discussion
Hello. You should start from the basics: 1) check your slow query plan, and watch for some improvements there 2) is this a new machine, I suppose, so.... how are your RAID disks levels (are you using raw devices, I also suppose) 3) look for buffers, how are your performance metri…
DB_locale or local naming convention
Hi, I already mention the informix version. IBM Informix Dynamic Server Version 11.70.TC1IE…
Btree scanner
onstat -C with its sub-options monitors the btree scanners. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Adv…
Creating Indexes
I have what I hope is a simple question. When creating indexes, If I create an index on a column that has null values, are those values included in the index and is it a good idea to create indexes on columns that contain null values? Listed below are the versions of Informix we…
Indexes on Null values
For oracle, I have read that nulls are not indexed. How does Informix handle null values on a column that has an index? Thanks…
Index reduction
Hi Just wanted to clarify I am correct in the assumption that it is not possible to create an index that doesn't contain all rows. I am currently compressing data using the informix compression, repack, shrink tools to reduce the size of our SAP database. However, we still end u…
Error -556 on @ reference
In IDS_A have a stored procedure do_some that has a insert into a local table. In IDS_B have a stored procedure do_some that does: call base@IDS_A:do_some(); Calling this sp works ok. In IDS_C i try to run: call base@IDS_B:do_some(); Fails with error -556 Cannot create, drop,…
Indexes contain multiple extents after reorg
Fernando, I should have mentioned, the index in this case is unique. I understand how a highly duplicate index could cause the engine to over-allocate space, but at least that would cause the index to end up with a single extent, compared to what I'm seeing. Still trying to wor…
Re: Fwd: Testing [28650]
Curious, there seems to be a problem with posting replies and r3loading this forums index.…
242: Could not open database table
Nope, I haven't tried lock mode to wait. The index create job does create 2-3 indexes and then start failing. regards, Nitin…
error in alter fragment
Thanks. It works. The table has two detached indexes in the same dbspace create unique index idx1.. in dbspaceA create index idx2 .. in dbspaceA I dropped the indexes, run the alter fragment and recreated. This time, I used "create index ...in table" to avoid this issues. Roger…
IDS 7.31 UD5 data(base) recovery
Informix Dynamic Server Version 7.31.UD5 I understood that IDS 7.31 entered End Of Support in September 2009 ( 2 and a half years ago) I hope this is not a business critical system…
update - locking
The where-clause are the index fields. So normally no sequential scan.…
BTScanner and SMI tables (sysptnbit and others)
Hello World, Context: One problem is how to find (by a query) even if the btscanner is running. In particular, I have a fragmented index and I want to check, through a sql query, if it is clean or not - I mean I know that multiple deletes were done on the table and I am not sure…
Informix Erorr - Key Value Locked
so the page locks may be on index pages? since when i dropped all indexes and primary keys, the error wa gone.…
enterprise replication time to replicate data
IBM Informix Dynamic Server Version 11.50.FC6 Question for enterpise experts Does anyone know a command that will give me time that it takes to replicate data to a node? for example i update on server a and it replicates to server b . How long did it take? cdr view profile gives …
Best way to move table contents to another
do i need to reindex if I do this? or will the indexes be applied. thanks…
Informix Locks On Select count(*)
hi, so during the point when my select is happening my index is possibly locked. (date index). therefore, preventing inserts? you mentioned before about index key locking thanks…
Drop Index
I am trying to drop an index on a table prior to compression. However, the process is taking considerably longer than expected, and too long for the outage I have. Does anyone know what parameters I could change to speed up the index drop - it will be the only process running. I …
Over 1,000 days of 24x7 database uptime!
On 29.07.2011 20:38 Lester Knutsen wrote: > From one of our customers, their Informix server hit 1,000 days today > .... congratulations;) > > IBM Informix Dynamic Server Version 10.00.FC8 -- On-Line -- Up > 1000 days 00:31:45 -- They beat mine just bit ... IBM Informix D…
Fragmented index question
IDS 11.70.fc2 Aix 6.1 I have a question for the experts...When fragmenting a non unique index, you can fragment the index by a column that isn't part of the index .. So, when it's an unique index, why does the column being fragmented by .. have to be part of the index? Peter P…
SQL Tuning Assistance Needed
Try to create the index on table trailer_audit (trailer_number, trailer_prefix, audit_code, audit_dt) Gary…
Setting up HDR- First Time -11.70 Innovator-C
Hi, I am setting up HDR for the first time. onstat - on primary shows IBM Informix Dynamic Server Version 11.70.UC2IE -- On-Line (Prim) -- Up 0:11:5s onstat - on secondry shows IBM Informix Dynamic Server Version 11.70.UC2IE -- Fast Recovery (Sec) -- Up 00s onstat -m on sec…
ISAM error 197: Partition recently appended to
Informix Dynamic Server Version 9.40.UC5 SUSE Linux Enterprise Server 10 (i586) I have done a level 0 backup directed to /dev/null and tried again. still it is throwing the same error.…
Yahoo! Answers - Web host offering IBM Informix?
Anyone knows ? http://malaysia.answers.yahoo.com/question/index?qid=20110316225108AA3RLex…
duplicate value for a record with unique key
appl_execution_id column is having the unique index…
Bitmap index
Hi, How can i create bitmap index on a table in IDS. I want the statement for bitmap index creation. We are using 11.50.FC6. Thanks…
index question
Current: O/S: HP/UX IDS: 9.4FC3 New (soon): O/S RHEL 5 IDS 11.1FC3 (can't go any newer) We are trying to get some 'expert' answers on creation of indexes and how they are actually used in our queries. The main indexes were setup by the app developers (not us) and we have added a…
Tool to estimate the size of an index
Sorry, I forgot to provide the version of the installation: IBM Informix Dynamic Server Version 11.50.FC4 Operative System: AIX Version 6.1…
AUTO INDEX
hello i am seeing more queries in version 11 that use the auto index feature than i ever recall seeing in version 10. it seems like the optimizer behaves differently but have not seen much in the literature about it. what is strange is that it is auto indexing on tables that are…
SQL running too slow in IDS 9.4
See my responses below: Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) IIUG Board of Directors (art@iiug.org) Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other…
index filter
What is the difference between PostIndex Filter and Lower Index Filter in Explain plan.…
Can't access sysindexes remotely
Hi, We are using IBM Informix Dynamic Server Version 11.50.FC6 using Platform: SunOS 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200 Thanks…
fragmented indexes?
v11.50.fc5 Aix 6.1 A general question... We have a table that will be fragmented by a fiscal week id, ie. 201101 ... We are also going to fragment the index. If the index is also fragmented by fiscal week, is it best to have that as part of the index column list. Obviously it do…
SQL Tunning
Hello Madison, Thanks for answering. Here is the data you asked me. QUERY: ------ select ag.nu_inscripcion from agrupado ag, abonado ab where ag.nu_inscripcion = ab.nu_inscripcion Estimated Cost: 2288701 Estimated # of Rows Returned: 2312068 1) informix.ag: INDEX PATH (1) I…
Indexes Usages
Good Morning, Im having some issues with available free space on my instance! However I have a lot of indexes that im afraid that are unused on a daily bases even monthly! Can anyone help me on building a sql statement that searches the SYSMATER database in order to retrieve…
Re: Batch job slows down
Some new information: - we turned off the btscanner, no difference. It is not a problem in the btscanner - reorg of the table where all transactions are loaded and then deleted from lowered the time per transaction from 0.3 seconds to 0.15 seconds. (The average time before the …
Batch job slows down
Ulf wrote: > Hi ! > > IDS 10.00.FC8 on HP-UX 11.31, EMC SAN > > We have been running the same batch job (transactions updating a > number of lagre tables 20 million rows) for a number of years. This > batch usually takes about 1 hour, now it takes up to 5 hours. Number > of trans…
Indexes usage
Hi People !! Please, a need some help how to find in my database the indexes with high percent of usage. Anybody knows if exist a function or if I have to develop a query ? Thanks, Best Regards, Eduardo…
Index creation progress
Index space caluculation used for the above index: (20+254+4+9) * 128867926 * 1.25 = 287 * 128867926 * 1.25 = 43 GB However the actual index space after rebuild of index was 8.7 GB. Why there is this difference? Only reason I can think of is because of Varchar. Is my analysis …
btscanner endless
Hi all, Does anyone knows why suddenly a btscanner becomes endless? I review which index is cleaning and it only has 783 records and it only has integer field. I added my btscanner reports below (as an observation, see big and negative numbers). I have done a drop a recreate o…
Informix Dynamic Server Software Downloads
It appears IBM has cleverly hidden the IDS downloads again on the Passport Advantage Website, at least from my prying eyes. I can find the Solid DB and the DB2 links just fine. Does anyone out there in IIUG-land with a Passport Advantage account know where IBM has stashed the dow…
Help tunning BTSCANNER
Hello, my friends. We´re running IDS 11.50.FC4 on a linux_64 machine, and our alice configuration is like this: BTSCANNER num=4,threshold=350,rangesize=-1,alice=11,compression=high It´s an OLTP instance, and I´ve noticed that the reports show high Time spent cleaning (sec) value…
OPTCOMPIND and perl
Anyone know if I can change OPTCOMPIND after establishing a DB connection or does it need to be set before connecting? ta SLES10 SP1 IBM Informix Dynamic Server Version 10.00.UC5…
Tips to reduce the IO times / alice hot list optim
Hello, friends. I´ve got a question on our 11.50.FC4 instance, running on a linux 64 red-hat based instance. (Obs: this is an OLAP system - DW based, so it´s not transactional) We´ve configured the BTSCANNER settings to use alice mode, but our IO is even 87% average (idle time).…
Find Index & its dbspaces
Hi, How to find Index & its dbspace name? (IN systabnames,indexes & tables are combined,but here i need only index) rgds Schillache…
CPU workload
Server 1: Reduce AIO VPs down to 4, half are unused and one more is under used. I see lots of write activity to a dbspace the appears to have indexes. It may be that your BTREE scanner threads are running almost constantly to keep up with cleaning your indexes. Unfortunately yo…
Index fragmentation
IDS 10.0FC9 on Solaris 10 I have a site where an index has hot the 16g limit for a tablespace. It seems from the fine manual that you cannot fragment an index across dbspaces round-robin (I suppose this is meaningless), only by expression. But I don't really want to do this; I j…
Looking for Opinions on How to Improve INSERT Performance
You could be running into the following bug: This is for long checkpoint but would also slow down your inserts. Check onstat -C to see if the btscanner is overactive on this specific table; onmode -C stop <#threads> Check if there are a lot of empty leaf nodes by running this q…
Formula for figuring out how many BTSCANNERS I nee
Was looking at my btscanners - IDS 11.5FC3 on Redhat linux. I see that it took 1379 seconds in cleaning and looks to be building a hot list is taking a while - As it is building now and the last one was built at 12:24 and it is 40 min later and still running. QUESTIONS: 1)Is th…
Corrupted index
Hi, We were validating the indexes on a table, an error raised telling about index corruption. Here it is: -------------------------------------------------------------------------------- # oncheck -cDI hrms:org.messages Validating indexes for hrms:org.messages... Index tr0035…
Informix Dynamic Server Scheduler question
Hi! I'm working on a project at my faculty. It's a java desktop application with an informix database. I have a problem using informix dynamic server scheduler. I have a particular table in my database. This table contains records that are inserted by the desktop aplication I'm …
indexing varchars
I have a table that has a varchar(40) column on it. This is likely to contains sequential integers. I want to index this column, but given that the beginning of the index will have little variance, will my index be any good? Will Informix hash the values in the index? Am I worryi…
IDS 9.40 End of Support Imminent
I have seen a number of posts on CDI recently related to IDS 9.40 As per the announcement on September 7th 2007, effective on the dates listed below, IBM will withdraw support from the following product releases licensed under the IBM International Program License Agreement: 9…
Creating index with upper function
Informix 11 Why doesn't Informix allow creating indexes with upper function? Something like create index idx_last on table(upper(column));…
defer updating indexes on inserts
Is there any way to postpone updating indexes when doing a large # of inserts until all of the inserts are done without dropping & recreating the indexes?…
Re: Question re. sysptprof
Not related with sysptprof but to your intended idea of checking index usage. Starting on version 10 you can monitor your index activity with "onstat -C part" It shows the statistics used by BTScanner to decide when an index must be cleaned. Everytime the index is accessed the …
index usage
Hi, I have a table with at least 16 indices. I need to identify all the ones that are being used or identify the ones that are not being used by the application. Is there a script or any other method to determine the indices usage? Please let me know Thanks! Informix Dynamic Se…
use stored proc that return multiple columns in a query
forgot to include version info: IBM Informix Dynamic Server Version 10.00.UC6W5 -- On-Line -- Up 207 days 22:14:39 -- 1441100 Kbytes…
Informix 11.10FC2W5 hangs & crashes
Whoops, that should have said "Sounds like you certainly should have 2 PMR's open, as the hangs mostly likely don't cause the crashes, and the crashes don't cause the hangs. Alice mode is certainly a performance tuning option, but performance tuning can quite often resolve cer…
installing informix dynamic server in linux
hi, I'm new to informix... I tried to install informix dynamic server(iif. 11.50.UC2E.Linux-RHEL4.tar) in my linux machine. I'm getting an error like this... One or more prerequisite system libraries are not installed on your computer. Install libpam.so.0, libncurses.so.5…
RE: Long checkpoints
Full ack with OTC's advice. If you want to be sure that the btree scanners causes your issue set environment variable TRACECKPT=1; export TRACECKPT # chatty Checkpoints before starting your instance. You will see if you have write issues or critical section issues (btscanner) in…
insert performance on fragmented table
Hi Paul, Please check indices on glpca. The slow insert generally results from index balancing. check your BTSCANNER setting. SAP suggested us to keep it - BTSCANNER num=6,priority=high,threshold=600000,rangesize=500 please raise an oss message for customized setting according…
Informix Dynamic Server v 11.50 Developer's Edition
Does everyone know that the Informix Dynamic Server Developer's Edition v11.50 that you can download from the IIUG Web site (www.iiug.org) is NOT timebombed, is completely and fully functional (including HDR, MACH11, ER etc.). Do you know that the only limitations on this versio…
Informix Dynamic Server v 11.50 Developer's Edition
Does everyone know that the Informix Dynamic Server Developer's Edition v11.50 that you can download from the IIUG Web site (www.iiug.org) is NOT timebombed, is completely and fully functional (including HDR, MACH11, ER etc.). Do you know that the only limitations on this versio…
b-tree scanner tuning and expected behavior
Hi, I guess it's solved now: but just changing the parameters didn't stop the btscanner activity. First I had to stop all threads, then I started two threads with: onmode -C start 2 onmode -C threshold 500000 onmode -C rangesize 100 and it's running fine now for about 5 days with…
Re: Tech Tip Du Jour
Art Kagel wrote: > Potato: > > In your case I might go all the way and configure ALICE mode. It will > do MUCH more to reduce the work that the BTSCANNERS have to do on larger > indexes than even Range Scanning which you are planning to configure. > Take you config and add alice…
CONFIGURATION ONAUDIT-IBM Informix Dynamic Server
Hello, I need to configure onaudit and onshowaudit able to register for each of the consultations that are made to the database, either through dbaccess, ODBC or another application. I've been reviewing the IBM Informix Trusted Facility Guide, but I was not working. What param…
Tech Tip Du Jour
Potato: In your case I might go all the way and configure ALICE mode. It will do MUCH more to reduce the work that the BTSCANNERS have to do on larger indexes than even Range Scanning which you are planning to configure. Take you config and add alice=12 to it. You are correct…
Re: Analysis of activities during checkpoint
You may set an Environment Variable before starting the Informix Server: TRACECKPT=1; export TRACECKPT The checkpoints will be more chatty and you can see what needs more time: writing to disk or sessions in critical section. With onstat -C you can see what the BTSCANNERS are …
Analysis of activities during checkpoint.
Art wrote: > BTSCANNER does not affect checkpointing at all, it controls the > performance > of the Btree Scanner threads which run in the background almost constantly > removing keys marked for deletion and compressing index nodes that have > emptied to keep the indexes efficien…
How to use Informix Dynamic Server
I have installed trial version of "Informix IDS Dynamic Server Developer Edition 11.5 for Windows 2003, XP, Vista, 32bit Version 1150TC1DE". But i am new to informix. Can anyone explain how to use IDS in detail.…
index creation
Hi, I'm creating index on "PPOIX" table. But it is taking too much time. What might be the reasons Pls help me ASAP…
Functional Indexes?
Ok sports fans, here's a really fun problem. Suppose you have a table with the following columns: Table Foo: Column a: id (Integer) Column b: type (single character) Column c: sequence # Column d: description (varchar up to 128 characters wide) Now there are 3 types of records…
unused indexes
howdy does informix have system views/meta data that indicates the last time an index was used? thanks tom…
Index on a synonym?
Hi everyone. Kind of a sanity check question. On IDS 9.4...If we have tableA in DB1 (which is on server S1) and the a SYNONYM for tableA defined in DB2 (on server S2) and someone were to create an INDEX on the SYNONYM...what do expect would happen to the original tableA? I would …
Re: long checkpoint duration
Oh never mind, I see it. BTSCANNER. :-)) Thanks again. ----- Original Message ----- Subject: Re: long checkpoint duration From: "Mark Jamison" >;majp51@yahoo.com> Date: Tue, February 12, 2008 15:32 Hi Floyd, Think of a leaf scan as if it were a sequential scan. Within that …
Re: long checkpoint duration
Thanks Mark. I find very little information in the manual about what rangesize does or is. The actual rangsize=num usage is not even documented. I would love to do trace checkpoint but I can't bounce my instance. ----- Original Message ----- Subject: Re: long checkpoint duratio…
Re: long checkpoint duration
Well, it is by no means a smoking gun, but eh number of leaf scans you are doing could result in some performance degradation. I would definitely sugest enabling range scanning, since it is more efficient. Quickest way to do this would be onmode -C rangesize 100 onmode -C stop …
Re: long checkpoint duration
onstat -C Btree Cleaner Info BT scanner profile Information ============================== Active Threads 1 Global Commands 0 Number of partition scans 5462 Main Block 0x07000002a1…
Re: long checkpoint duration
Hi Floyd, tell me what onstat -C shows you? Also onstat -C hot |wc -l would be nice as well. One of the bigger culprits in the old days was the btcleaner thread since it has to clean indices for the who instance, and the current defaults help make the btscanner thread just as b…
Informix thread working with a index
Thank you Mark I thinks it's very helpful. why aren't this parameters documented in version 9.40? And a last question: How many btscanner threads are recommended per table or cpu? thanks for your help again.…
locking error (problem)
Keith, I even dropped my indexes. Still the problem.... Danny…
BTSCANNER ALICE mode
Hello all, Is anyone aware of any documentation, beyond the release notes, on just exactly what the ALICE mode for BTSCANNERS is/does? I know it stands for Adaptive Linear Index Cleaning Engine, or something similar, but not much beyond that. Is there any good documentation ou…
What is IPA abbreviation ?
Hi all IBM INFORMIX DYNAMIC SERVER 10.00 PRODUCT RELEASE bug_number 168928 description WITH NON-DEFAULT PAGE SIZE AND ACTIVE IPA'S, TABLE LEVEL RESTORES FAIL product_code ONUTILS component_code ARCHECKR What is IPA ? Thanks…
Index Fragmentation
I've come across a table which has index fragementation as follows: create table "blah".tabwhatever ( pk_id serial not null , ...... fragment by expression (mod(pk_id , 10 ) = 0 ) in data_dbs01 , (mod(pk_id , 10 ) = 1 ) in data_dbs02 , (mod(pk_id , 10 ) = 2…
Fragmenting Indexes
Version: IDS 10 I am currently looking at various fragmentation strategies for Indexes that have keys of type CHAR. I have following questions: 1. Columns that have value of "000987" but is a CHAR, which strategy makes more sense, doing the fragmentation by using SUBSTR or usin…
Index strategy
Scenario: IDS9.4 A table is fragmented (by expression) across 10 dbspaces. What is the best strategy for building a unique index? Should you create it like a regular non-unique index, that is, where it is created within the same dbspaces as the table. Or, perhaps it should be cr…
Functional index
Hi All, We are on IDS 9.40.FC6 and IDS 10.00.FC5, HP-UX 11.11 I need to solve a problem with how integers stored as characters ar sorted. I thought to use lpad, but is doesn't seem to work on a character field. So I have a simple function that pads the left of a character field…
Re: Informix beats Oracle
DA Morgan wrote: > Fernando Nunes wrote: >> DA Morgan wrote: >>> Ian Michael Gumby wrote: >>>> Maybe I'm being vague because you can hear but you don't seem to >>>> listen. >>>> >>>> Again, you want innovations. >>>> >>>> Informix has the premiere HA/HDR implementation. >>> >>> W…
IIUG TV
Great job on the video work!! I look forward to seeing more! -t- -- -- Informix Dynamic Server Database Engine -- http://www.informix.com --…
Re: Informix beats Oracle
Fernando Nunes wrote: > DA Morgan wrote: >> Ian Michael Gumby wrote: >>> Maybe I'm being vague because you can hear but you don't seem to listen. >>> >>> Again, you want innovations. >>> >>> Informix has the premiere HA/HDR implementation. >> >> What I see, again, is a vague gene…
create indexes vs enable indexes
if somebody could throw some light, if creating indexes are better than enabling indexes. Also does update stats work better with creating indexes or when indexes are enabled.…
Index inquiry
IDS: 9.40.FC3 OS: HPUX 11.11 We have several hundred tables from a 3rd party application that was created in the 7.x (at least that old) era and many tables have what I think are redundant and unnecessary indices, but wanted to pose the question to the group to see if I understa…
Re: admin tools like PC client
Mike, What version of Informix are you using? Informix SE? Informix OnLine? Informix Dynamic Server? Most Informix versions these days come with a product call I-Connect that needs to be installed on the PC and rovides the Informix ODBC drivers.…
Error when initializing
06:36:20 IBM Informix Dynamic Server Version [b]10.00.UC6TL[\\b] I believe this is likelt ot be a new ish instance to a newish user of the software…
Index down
Hi all:It is possible to activate and to deactivate the one indexes tablaA without lowering the instance.As serious the syntax and the risksThanks The freedom of Linux ... The power of Informix _________________________________________________________________ Exprésate - diseña t…
moving indexes
I am using IDS 9.4 TC2 I would like to move all indexes to a new dbspace on another drive and, at the same time give them all meaningful names. This includes primary keys, foreign keys, and unique constraints. There are about 1400 indexes in all, so I don't wish to do them one a…
detached indexes
I know I can detach indexes from tables to another dbspace; CREATE UNIQUE INDEX "prod".rlidx_db0_10 ON "prod".db0_10 ( rec_loc ASC ) in maintdbs2; Can I do the same thing with the 'alter table' statement for PKs? ALTER TABLE db0_10 ADD CONSTRAINT PRIMARY KEY ( sta_code ) CON…
Index Size
Is there a convenient way to find out the actual size -- the size in (k|m|g)bytes of indexes? I mean without doing checking or rebuilding, just show me the name of the index and how big it is? This is in IDS 7.31.FS6 if that matters. Thanks. -- Jus' livin' in the Dilbert Zone.…
problems with Informix dynamic server 9.4 @ WIndows 2003
I have problems with connecting the server. I use correct user/password to connect to the server, but the server do not known the server. I'm sure the user exist and is one of the user in Informix_Admin group. I have installed Informix dynamic server 9.4 in a windows xp system in…
Re: 10.0 xC6
> Neil, It would be nice if you could extend your BTSCANNER white paper > to include "alice" scanning!! Andy Watson, who writes all this stuff, is sulking because he says no-one ever responds to his cdi posts. I'll try and coax him by saying how much you liked it!…
Re: BTSCANNER defaults
Alas, at the moment, since we are between version 10 and cheetah, no clear documentation exists. It should be there in Cheetah documentation, but until then, documentation is scarce. ----- Original Message ---- From: Andrew Ford <aford@networkip.net> To: Mark Jamison <majp51@yah…
Re: BTSCANNER defaults
Excellent. Thanks for the info Mark. Do you know where I can find the documentation for this new feature? A search of the 10.0 Informix Center doesn't produce anything interesting. Andrew ----- Original Message ----- From: Mark Jamison To: Andrew Ford ; informix-list@ii…
Re: BTSCANNER defaults
>Do you know of any guidelines as to when an ALICE scan would be preferred >over a leaf or range scan? Sure. ALICE will be preferred over everything. It is more efficient that leaf or range scans. It is new functionality though, so there may be bumps along the way. Honestly I w…
Re: BTSCANNER defaults
10.0.UC5 here. Thanks for the info, what you say makes sense. The threads were very active and probably dynamically changed themselves to run at a high priority. We are upgrading our last 9.3 instances to 10.0 tonight and I am explicitly setting the BTSCANNER onconfig paramete…
Re: BTSCANNER defaults
Sorry for the repeat I forgot to include the whole list Inlater versions of 10, 10.00.FC5 and greater I believe, the Default is still LOW, but now it will actually switch to High to run any critical sections, like compresses. It will reset back to LOW when doing scans, or while …
Re: BTSCANNER defaults
Our default (out of the box) priority value of btscanner (checked from onstat -C) is low, IDS10.00.UC4 and UC5…
BTSCANNER defaults
We are upgrading from 9.3 to 10.0 and have found the BTSCANNER defaults to be a must change. Based on the recommendations in a post from Alexey Sonkin in March 2005 we've changed our production parameters and have seen a significant improvement. Out of the box our 10.0 btree sc…
problem with select count(distinct
maybe not the same problem as your index is not a composite…
License Extension
Help.. I need a license extension for the IBM Informix Dynamic Server Version 10.00.FC3R1TL which I downloaded to do a evaluation. How can I get the license extened..my project is in the final stages .. Dhaya Commercial bank…
Index Size, On Table, Off Table, Reindexing Online......
Tam OShanter wrote: > Thanks for the help. > > As to why we reindex, I'm not sure I understand the question... > > I'm assuming that indexes get "disheveled" so to speak if data is constantly > being inserted > and updated on a given table causing fragmentation. Informix rebalan…
informix crash
contact TS. seems you have a problem with btscanner; may be an index is hosed??? Superboer. roger@star2000.com.tw schreef: > Hi informixer: > > My informix version is 9.40.FC2. It crash several times before. > the messages in online.log like this: > 11:16:49 Who: Session(7…
attached index
We have a query that runs kind of slow, which is exacerbated by the fact that it has to run millions of times. It's searching on partial firstname and lastname. It is using a composite index but I notice that this index as created with a storage parameter of "in table". Wouldn'…
Index Levels
Query to find index levels. set isolation to dirty read; select tabname[1,18], idxname[1,18], levels from sysindexes, systables where sysindexes.tabid = systables.tabid and levels > 2 order by 1 asc,3 desc…
Re: Security Vulnerabilities Addressed in Informix Dynamic Server
Clive Eisen wrote: > Ian Michael Gumby wrote: > > Yes the buffer overflow issues are a pain and frankly they shouldn't occur > > if IBM did formal code reviews. Or rather they should be caught and > > corrected prior to release. > > > > "Paul Watson" <paul@oninit.com> wrote in m…
index width
I'm reading that B-tree indexes don't perform well on wide columns, specifically those above 32bytes. I'm trying to find out the width of all our indexes. I can't come up with a query to do this, any help ? I know I have to join systables, syscolumns and sysindexes, and join on…
Security Vulnerabilities Addressed in Informix Dynamic Server
Not sure if this has posted here or not but .... http://www-1.ibm.com/support/docview.wss?rs=630&context=SSGU8G&dc=D600&u id=swg21242921&loc=en_US&cs=UTF-8&lang=en Cheers Paul Paul Watson Tel: +44 1414161772 Mob: +44 7818003457 Web: www.oninit.com GO FURTHER with DB2 GET THER…
question on sqexplain output
A question about the below sqexplain file from this long query: Basically, I'm trying to understand the output of sqexplain. In this section below, ( the join on s.scsublog_token with sc.token ), does this output mean that the only index being used is the sc.token index , or is…
Indexing A Function???
Hello All, Wondering about the reasoning behind doing something like..... create index some_index on employee ( toupper (department_name) ); 1. Any idea why, not in this specific case, but is this standard ? 2. Would this not be wastefull as opposed to just indexing the de…
HDR and Indexes
Most of the folks using HDR know about the create index issue. Can I have honest reaction on this issue? Thx…
Re: Checking indexes after large deletes
----Original Message----- From: Gentsch, Sam [mailto:sgentsch@intercall.com] Sent: Wednesday, June 07, 2006 4:11 PM To: Hamilton, Jerry; informix-list@iiug.org Subject: RE: Checking indexes after large deletes >> I received an interesting email concerning BTSCANNERS from a kind …
RE: Checking indexes after large deletes
Please share it. -----Original Message----- From: Gentsch, Sam [mailto:sgentsch@intercall.com] Sent: Wednesday, June 07, 2006 4:11 PM To: Hamilton, Jerry; informix-list@iiug.org Subject: RE: Checking indexes after large deletes I received an interesting email concerning BTSCAN…
index on nulls
If we create an index on a field that is mostly containing null values ( 90% nulls ), will the index still use the same amount of space whether the field is null or if it has data ? Thanks ======================== -<<Floyd Wellershaus>>- Database Administrator Unix Administra…
Index Rebuild
Is there a way to determine if an index would be a good candidate to be rebuilt, for example, on a table that has a very large number of inserts and deletes? In a case like this, would dropping and recreating an index make it more efficient? Thanks for your thoughts ... Mary Gr…
Index Report
Hi, Does someone have any easy way to generate a basic report listing just the indexes of all tables within a database? Example: Table: customer Indexes: 1-customer_id 2-customer_city Thank you. Tony…
locking and index
Can someone explain me the locking mechanism on indexes ? If the table is on row lock mode, are the indexes always row locked ? Or are there other considerations ? We are in ID7.3, we plan to migrate to IDS10. Is there a difference about locking with indexes attached or detached…
Initialising Informix
I am trying to initialize informix on a new server and I am getting this error. The server is HP UX 11.11 and Informix IDS 7.31 What could be the problem / This action will initialize Informix Dynamic Server; any existing Informix Dynamic Server databases will NOT be accessible …
Informix Connection From WIN CE.NET Emulator?
How do I connect to informix dynamic server from WIN CE.NET Emulator? Is there a WIN CE informix driver?…
SET ROLE and SYSROLEAUTH
Which Informix version? Log a support call. Any indexes on the table?…
Re: Table Editor for Multiplatforms
Enhancements in Version 4.3 ..... also supports the Informix Dynamic Server 9.x. http://www.ibm.com/software/data/db2imstools/db2tools/db2te/…
INDEXES
Can someone provide me with some instruction on how to rebuild informix indexes on a single table? I droped 256000 rows of data and now wanted to re-index the table and update statistics. Thnaks in advance…
Rebuild indexes
What is the method of rebuilding indexes in 9.4? Could you possible include some systax? Thanks in advance…
insert duplicate values into unique index column
I answered yes to all the secheck prompts and the index was dropped and recreated. This fixed the problem and now I was able to insert the missing data. Thanks for the help. ERROR: 17 bad data record pointer(s) Delete index ? y Remake index ? y Checking data record and index…
Fragmentation Elimination Problem
I am on version IBM Informix Dynamic Server Version 10.00.FC4.…
Re: Informix Dynamic Server 9.30 - Shared Memory
Ronald Schwingel wrote: > Can someone please tell me how much Shared Memory (gigabytes?) > Informix Dynamic Server 9.30 (32-bit version) for AIX 5L can use > before asserting with a Shared Memory access error? Can you provide > documentation that I can pass on also? It looked to…
RE: Informix Dynamic Server 9.30 - Shared Memory
First off you shouldn't be getting shared memory access errors. That sounds more like a bug that technical support should address. I wouldn't be surprised if your getting can't allocate additional shared memory segment messages. Informix 32-bit on AIX is a bitch. The problem …
Informix Dynamic Server 9.30 - Shared Memory
Can someone please tell me how much Shared Memory (gigabytes?) Informix Dynamic Server 9.30 (32-bit version) for AIX 5L can use before asserting with a Shared Memory access error? Can you provide documentation that I can pass on also? We are looking at providing one of cust…
create a DB on Linux
Hi! I have installed Informix dynamic server on Linux. Now I want to create a data base. What should I do? Thanks…
RE: Track a session to a Buffer
Hi Zev. You mean the following ? Userthreads address flags sessid user tty wait c000000007c17338 B--PR-- 175155 testdb - c000000000e104b8 If this is correct, probably btscanner is holding buffer. onstat -b -> onstat -g ath -- Tsutomu Ogiwara fro…
Index space
Just quick question, what will happen if informix runs out of index space? Cause we are facing such problem soon. We are trying to clean the space. Thanks, Denny ******************************************* The information contained in this e-mail message may contain privileged …
Re: flagship sunk
Funny I have been able to download IDS 10 for Solaris, Windows and Linux am I just smarter than everyone else? www.informix.com Support and downloads In the middle trials and betas Oh look Informix Dynamic Server (IDS) V10.0 easy!…
RE: Problem with the sysmaster database.
Yes, don't forget to index and update stats on the temp tables.…
RE: Informix crashes on btscanner
Hi Omar. If you have btc_partnum_unset_busy in af file, you may encounter 163521. In 9.30 family, 9.30.UC7 is fixing this problem. Consider upgrade your engine to 9.30.UC7, 9.40 or 10.00. Regards. -- Tsutomu Ogiwara from Tokyo Japan. >From: "Omar Muqoz Perez" <omunoz@segurosa…
Informix crashes on btscanner
Hi. I have an informix instance which crashes from time to time. On af.* file appear a reference to btscanner thread, something like this: 15:17:16 Assert Failed: No Exception Handler 15:17:16 Who: Session(6, informix@jupiter, 0, 1908867600) Thread(28…
Re: IDS 10 - documentation questions
Oops! I mean IBM Informix Dynamic Server Version 10.00.TC3ET Althought the release notes (idse_win_release_notes_10.0.html) start with:- "Release Notes for IBM Informix Dynamic Server Express Edition for Windows Platforms 10.00.TC3E, 1 July 2005 " so it is TC3E or TCE3T? and …
Re: Sql to concatenate multiple rows to a single row / column
Thank you SaltTan - it works beautifully. BTW, we have IBM Informix Dynamic Server Version 9.40.FC6.…
Re: Not using the new parameters in V10.0 upgrade.
Yes - I'd run some onstat's and check what the parameters have defaulted to. - I assume since you still use the BUFFERS line that you are just using the default page size for your platform. Check IDS didn't rewrite the onconfig as part of the upgrade - I thought BUFFERS was gone…
Index utilization
I do not know I-spy and the other products like Server Studio (never used them before) - but I have a question that might be related to them. I would like to see, looking at an entire instance, which INDEXES are being used, and which aren't. Is there a tool that can show / anal…
Add Constraint
maybe the database is building some indexes and checing there are no violations?…
index usages
Hi, If there are multiple indexes on a table and these indexes are used in a select query.Does informix choose the best index out of it or it can choose all the indexes and perform filtering at this level and do the remaining processing. For example if i have a table Tab1(a,b,c)…
Q: BTscanner - range scan savings
Hello everyone. Following one of the recent threads I read about BTscanner and how it works. Then I checked its output and found out potential place for optimization. Or maybe I'm just misinterpreting the output. The problem is that "onstat -C range" reports many 100% (or close) …
getting space used by indexes
I have a database with tables and indexes in one dbspace. Is there a way to find out how much space the indexes are taking?…
FW: BTREE SCANNER monitoring and tuning.
"Alexey Sonkin" <alexeys@cidc.com> wrote in message news:1123191451.463032d9745d3db55c8a2ef3928fe560@teranews... > > > Sam, > > BTScanner is one of very poorly documented aspects of Informix. > Some information was available on Neil's site, but it's not here any > more. You can …
New IDS Forum on IBM Developerworks website
This forum provides a place for Informix Dynamic Server developers and users to share their questions, thoughts, and ideas with others. http://www-128.ibm.com/developerworks/forums/dw_forum.jsp?forum=548&cat=19…
general index question
I have a question about indexes in general. We have several tables that have an index, say, on columns a,b,c then an index on a, or an index on a,b. It has always been my understanding that the second index is redundant as the first index can be used to satisfy queries on a, or a…
Re: Index problem
col6 isn;t in the old index decinfitions at all. so quite probably they have found a better way to declare the uniquness using a much smaller index which is easier to travers…
Index problem
Hello, we have a database table with 7 columns and approximately 10 million rows. There is a unique index on 6 columns. The customer with the 10 million rows had problems with his system because the INSERTs were very slow. Yesterday, his database administrators added 2 new indiz…
Re: IDS 10 Express Edition
Note 10.00.xC3 = Enterprise Version 10.00.xC3E = Express Edition http://publib.boulder.ibm.com/infocenter/ids9help/index.jsp?topic=/com.ibm.relnotes.doc/uc3E/idse_win_release_notes_10.0.html Then click on "IBM Informix Dynamic Server Express Edition" in the right pane:…
Index question
Hi, I have a lookup function that works with two tables. The function has been placed as a calculated attribute (call to the function) within a user application. When a user selects table A (1 million rows) and choses the calculated attribute with a count(*), the function does a…
Re: vanilla index
Ray wrote: > Hi All, > > Does anyone know what non vanilla index and this message means? Thanks > in advance! Sounds like the index stat_loc_ix1 is not a B+Tree index but an RTREE, CopperEye, or other VII based index which oncheck -cD cannot crosscheck to verify that all rowids…
vanilla index
Hi All, Does anyone know what non vanilla index and this message means? Thanks in advance! $ oncheck -cDI hoc:stat_loc Validating indexes for hoc:informix.stat_loc... Index stat_loc_ix1 Index fragment in DBspace dbidx01 Index…
Find out less used index?
dear all, how to find out the less used indexes in a table? how many indexes are there for a table in a normal performance?…
Index question
We have a new query, with a where-clause: where a < b (a & b are date fields) and c = 0 (c can have values from 0 to 270) and d = "2" (d can have 4 different values) What is the best way to write this where clause, and which are the best indexes to use ?…
setup Informix Dynamic Server Version 9.40.UC1E1 to linux error
I setup Informix Dynamic Server Version 9.40.UC1E1 to linux execcute oninit -ivy is failed the online.log is write /// 16:31:32 Dynamically allocated new virtual shared memory segment (size 8192KB) 16:31:32 Informix Dynamic Server Version 9.40.UC1E1 Software Serial Number AA…
FOREIGN KEY Problem
Just a note: While investigating another problem about an index, I found in the manuals (9.40 IDS) that the optimizer will not use an index on a varchar column. That may only apply to indexes where the varchar is the root of an index; I did not pursue it any further. (I just cur…
Composite index
If I have a composite index, I assume that the best performance gain would be to create the index in order of column size - smallest column to biggest column Create index i1_index on tab1 (col1, col2, col3) Where col1 is the smallest, and col3 the largest. Is my assumption cor…
insert from select (table scan) with no join
sometimes an index exisist on the table and sometimes it doesn't?…
RE: is this a problem?
You have a table and index named the same. They both show up. Use some naming conventions for tables and indexes. uidx_tabname_colname for the index.…
Re: Need help!! Sql to Informix Migration
no idea, do the same indexes exist? is it using the indexes in the same way it does in sql server…
Need help!! Sql to Informix Migration
no idea, do the same indexes exist? is it using the indexes in the same way it does in sql server…
index updates
Hi, If i have several indexes on a table and i perform a update on the table, does all the indexes get updated parallely or they get updated one after the other( sequentially). Bye,…
FanOut of Index
Hi, I want to know how the fanout of an index is calculated for Btree index. Bye.…
Re: rule of thumb or words of wisdom for btree cleaners?
Alexey Sonkin wrote: > Just put > > BTSCANNER num=1,priority=low,threshold=50000,rangesize=10000 > > in Your $ONCONFIG - and Your desperation will go away My desperation might turn into sadness, no more that that. In my opinion the new btree scanner has at least two major design…
RE: rule of thumb or words of wisdom for btree cleaners?
Alexey Sonkin wrote: > Just put > > BTSCANNER num=1,priority=low,threshold=50000,rangesize=10000 > > in Your $ONCONFIG - and Your desperation will go away My desperation might turn into sadness, no more that that. In my opinion the new btree scanner has at least two major design…
RE: rule of thumb or words of wisdom for btree cleaners?
Forgot to mention, the the same settings can be done with the following $ONCONFIG parameter: BTSCANNER num=1,priority=low,threshold=50000,rangesize=10000 -Alexey > -----Original Message----- > From: owner-informix-list@iiug.org [mailto:owner-informix-list@iiug.org] On > Behal…
RE: rule of thumb or words of wisdom for btree cleaners?
Forgot to mention, the the same settings can be done with the following $ONCONFIG parameter: BTSCANNER num=1,priority=low,threshold=50000,rangesize=10000 -Alexey > -----Original Message----- > From: owner-informix-list@iiug.org [mailto:owner-informix-list@iiug.org] On > Behal…
RE: rule of thumb or words of wisdom for btree cleaners?
Norma, After a thorough investigation of how the BTSCANNER works, I can suggest a rule of a thumb: 1. ALWAYS change btscanner from the default 'leaf scan' to 'range scan' with a range scan threshold equal to 1-5 % of Informix cache, like: onmode -C rangesize 10000 2. ALWAYS i…
RE: rule of thumb or words of wisdom for btree cleaners?
Norma, After a thorough investigation of how the BTSCANNER works, I can suggest a rule of a thumb: 1. ALWAYS change btscanner from the default 'leaf scan' to 'range scan' with a range scan threshold equal to 1-5 % of Informix cache, like: onmode -C rangesize 10000 2. ALWAYS i…
indexes
hello stull fuzzy on index retrieval and the order of the indexed fields.... if i have a table with these columns indexed (col1, col3, col4) and the sql says col1, col4, col3 does the index still get used or does it stop at col1 because of the order? i assume always using th…
Informix Dynamic Server information Centre
Great new utility just posted under IDS 10 on the docs site has uses for other products and versions than just IDS 10 so take a look even if you are not using 10 yet!! http://publib.boulder.ibm.com/infocenter/ids9help/index.jsp…
Cannot find message file. Check INFORMIXDIR and DBLANG.
im trying to run the oninit -i in the command prompt when the message appear... we installed... IBM Informix Dynamic Server 9.40 IBM INFORMIX-4GL Rapid Development System Version 7.32.UC2 IBM INFORMIX-4GL Version 7.32.UC2 set up sqlhosts, services, onconfig, path... but when tr…
> btree pages in cache
Willem, This is a general problem with the new btree scanner. It causes a lot of i/o. There are a few things to you can do to soften it's impact. But each has it's down side. 1) Turn off the btree scanner at certain times and let it run when the load is low (onmode -C start/sto…
Unique index ??
I am having an argument with one of our developers. He wants me to create the following (unique) index on a new table. This just sounds ridiculous to me. Any comments / suggestions ? create unique index "stanley".iu_dao on "stanley".done_and_out (dao_scheme_chk,dao_categ…
Index extents
All, Is there a way to size the index extents if they are detached? I'm seeing alot of extents allocated to indexes (150+ extents). -Terrence…
renaming indexes
People, We have some tables that have primary and foreign keys and we want to rename the index name to something meaning full. How can we do the rename without dropping and creating the tables. Regards Kenneth…
Index corruption
Hello, Env:AIX 5.2 IDS 9.4 FC4. Created new index for the entire table and within 8 hours while it was sending index to HDR secondary(while synchronising) the entire system freezed with block checkpoint, I had to stop the server on secondary to keep production moving. Did anyb…
compressed indexes
Does anybody know how to lower the number of levels in a btree index ? We have some that have 4 and 5 levels, and I read that is a performance hit. Thanks, Floyd…
compressed indexes
Does anybody know how to lower the number of levels in a btree index ? We have some that have 4 and 5 levels, and I read that is a performance hit. Thanks, ======================== -<<Floyd Wellershaus>>- Database Administrator Unix Administrator email: fwellers@yahoo.com Work…
compressing indexes
Does anybody know how to lower the number of levels in a btree index ? We have some that have 4 and 5 levels, and I read that is a performance hit. Thanks, ======================== -<<Floyd Wellershaus>>- Database Administrator Unix Administrator email: fwellers@yahoo.com Work…
Re: Running Informix on 2 different Servers in parrallel
wcottishpoet wrote: > Neil, > > other than the holiday, how about all the following which are available > in 9.40 .... > > > Improved Performance 8-15%better in internal benchmarks;Fuzzy > Checkpoints;Shared Statement Cache;New Buffer Management System;B-Tree > Scanner;Improved R…
chunk capacity
we are using BM Informix Dynamic Server Version 9.40.UC2X3 on Linux Kernel 2.4.21 the command 'onstat -d' shows ... Expanded chunk capacity mode: disabled how can I change this mode to 'enabled'?…
Re: indexing
"If there are no suitable indexes, then it will use information like B-tree depth, number of rows in each table, distribution of column values to decide which column (s) to do a sequential search on." No indexes means there is no B-tree so there is no B-tree depth to worry about…
Re: indexing
tomcaml@yahoo.com (tomL) wrote in message news:<3158a6a2.0408301033.2b1ab17b@posting.google.com>... > hello all! > > a few indexing questions: > > If the columns I filter on in my query are a subset of the columns in > an index, will the index be used? > > Also -- does the order …
Re: indexing
Thanks, Art. How about this scenario? What if the index contains fields I'm not specifying? will the index still be used? Tom "Art S. Kagel" <kagel@bloomberg.net> wrote in message news:<pan.2004.08.30.17.16.08.846438.1355@bloomberg.net>... > On Mon, 30 Aug 2004 14:33:39 -0400…
indexing
hello all! a few indexing questions: If the columns I filter on in my query are a subset of the columns in an index, will the index be used? Also -- does the order in which the columns are specified in my filter matter? thank you tom…
IDS V7.30 and Windows 2000
Can Informix Dynamic Server Version 7.30.TC6 be run on a Windows 2000 host system? TIA Erwin…
index creation timestamp
Hi how to find index createion timestamp? thanks Regards sending to informix-list…
Re: Error Initialize Informix Dynamic Server
Art S. Kagel wrote: > On Wed, 04 Aug 2004 05:05:41 -0400, madiego wrote: >>I install Informix Dynamic Server and when I initialize 'oninit -iv' : >> >>This action will initialize Informix Dynamic Server; any existing Informix >>Dynamic Server databases will NOT be accessible - Do…
Error Initialize Informix Dynamic Server
Hello, I install Informix Dynamic Server and when I initialize 'oninit -iv' : This action will initialize Informix Dynamic Server; any existing Informix Dynamic Server databases will NOT be accessible - Do you wish to continue (y/n)? y Checking group membership to determine ser…
Re: Informix Dynamic Server and DB Tuning
I am experiencing similar problems with users migrating from Standard Engine to IDS 9.30. It appears that some applications are more susceptible than others. What application(s) are you running? We also have experience of adding more BUFFERS, LOCKS, etc and not improving the sit…
RE: Informix Dynamic Server and DB Tuning
Muthana Increase BUFFERS in onconfig file. UPDATE STATISTICS for each table (as a minimum) rerun the query and see what improvements you get. If you still have problems post the results of:- onstat -p onstat -m onstat -R and sqexplain.out of any particularly slow query or updat…
Informix Dynamic Server and DB Tuning
Dear Sir, The question how can make DB Tuning for Informix Dynamic Server version 9:30 to get the query faster. I used IDS 9:30 and it's not quick enough like our old Standard Engine. which Parameter can i change to make that or what shall i do? Regards Muthana AL-Temimi…
Index question
Hi, I need know what SMI tables are involved in indexes. With sysindexes I can know Ids and Tabid of each index, but, which tables are necessary to know index columns names? Dbaccess shows this information, but I need to do a query .... Thanks Paola…
Can IDS accessing Informix SE Tables.
Hello, Now we are using Informix SE. We are planning to go Infomix Dynamic Server 9.x. Before migrating our current applications to IDS 9.x., first we have to develop a new application in IDS 9.x, in that we need to use some of the tables from informx SE. Could you please answer…
Re: ONCONFIG for 9.40 offered for comment
Neil Truby wrote: > 9.40 FC3W2 on HP-UX 11.11 > The server has 6 cpus and 6G of RAM. > 3 other, small, IDS 9.40 instances run on the server, and one small 7.31. > kaio is enabled. > > Just put 9.40 live, and it's running about 5-10% more slowly on some key > processes. This refl…
table or index
this is the structure of the table systabnames in the database sysmaster |------------------------------------------|-------------------|----------|---| |Column Name |Column Type |Null |Key| |------------------------------------------|--…
Dose anybody have the dbtop script in the Troubleshooting informix course?
Dears, I study the Troubleshooting ibm informix dynamic server course. At the module 4 exercise need the dbtop script. Dose anybody has this dbtop script and post for me? Thanks. Philip Yeh.…
Re: ER initialization problems
"Madison Pruet" <mpruet@comcast.net> wrote in message news:<SyHhc.12569$GR.1757984@attbi_s01>... > Is there a case open? > > > "Harry Johnson" <hjohnson@keeneinfo.com> wrote in message > news:6830f442.0404211702.170bc10a@posting.google.com... > > "Madison Pruet" <mpruet@comcast.n…
Re: ER initialization problems
Is there a case open? "Harry Johnson" <hjohnson@keeneinfo.com> wrote in message news:6830f442.0404211702.170bc10a@posting.google.com... > "Madison Pruet" <mpruet@comcast.net> wrote in message news:<j3nhc.169851$gA5.1981630@attbi_s03>... > > no, but I'd like to see the output of …
cannot drop index
I am having problems dropping an index. The system complains that I don't have exclusive access, but there are no locks on the index or the table. Any ideas? Malcolm…
Work group edition - Unlimited edition??
Taken from IBM web site:- =========================================================================== The following Informix Dynamic Server Workgroup Unlimited editions have been added to the IBM Data Management Gold Transaction Processing Bundle for SMB Unlimited: IBM Informix…
Re: [Informix Dynamic Server (IDS):] Digest 2671
For a course in the US, check out: http://www-306.ibm.com/services/learning/ites.wss?pageType=course_description&co urseCode=L1760&country=us&language=en (IBM course L1760). There is probably a similar course offered in Europe somewhere. Hope this helps. Kevin Doiron Toronto,…
Experiences with IDS 9.40
Posting title - Experiences with IDS 9.40 Ardenta has been testing IDS 9.40 (FC1, 2 and 3WC2) and we have found a couple of show stoppers that have forced us to recommend to our more risk adverse clients that they defer their plans to upgrade. Should you be considering upgrading…
FW: Whatcha' wanta have?????
Some indexing additions: 1) Inclusion of columns in the index that are not part of the index key but help speed processing. This feature is available in a number of other rdbms's. 2) Use more than one index on a table to filter the result set. sending to informix-list…
FW: Whatcha' wanta have?????
Some indexing additions: 1) Inclusion of columns in the index that are not part of the index key but help speed processing. This feature is available in a number of other rdbms's. 2) Use more than one index on a table to filter the result set. sending to informix-list sending …
Detaching Indexes
Hi All, IDS 7.31.UD6 AIX 4.3 I recently began experimenting with detaching indexes. I was under the impression that moving the indexes to a different dbspace would decrease the space used in the main data dbspace. However, this is what I found: (4K Pgs) …
Re: Transaction support in informix dynamic server(IDS)
chaithra wrote: > i wanted to know, if in IDS we can get to know the status of a > transaction at any given time. or once any transaction commits or > rollsback we should be able to know the status. > is it possible through c++ interface provided by the IDS. I'm not quite s…
Transaction support in informix dynamic server(IDS)
hi all, i wanted to know, if in IDS we can get to know the status of a transaction at any given time. or once any transaction commits or rollsback we should be able to know the status. is it possible through c++ interface provided by the IDS. thanx in advace chaithra…
Re: Informix 9.40.FC2 Crash.
yes, i am told there is a bug with the b tree cleaner in this version. support mentioned reading the release notes but i don't know the specifics yet. the next version is supposed to be available next week. tom "Tsutomu Ogiwara" <tsutomu_ogiwara@hotmail.com> wrote in message ne…
configure computer for using informix
what shell I do to make my computer work with informix. I have installed winXP on my computer, informix 4 i informix dynamic server? THANKS…
RE: Informix 9.40.FC2 Crash.
Hi Marino. 9.40.xC2 has a following bug with bescanner. 163521 ASSERT FAILED: NO EXCEPTION HANDLER WHEN RUNNING DQUERIES STRESS TEST 9.40.xC3 is fiexed version. I do not know whether you encounterd this bug. HTH. -- Tsutomu Ogiwara from Tokyo Japan. ICQ#:168106592 >From: "…
Re: Informix 9.40.FC2 Crash.
--0__=08BBE489DFE221B38f9e8a93df938690918c08BBE489DFE221B3 Content-type: multipart/alternative; Boundary="1__=08BBE489DFE221B38f9e8a93df938690918c08BBE489DFE221B3" --1__=08BBE489DFE221B38f9e8a93df938690918c08BBE489DFE221B3 Content-type: text/plain; charset=US-ASCII Hi Try set…
Informix 9.40.FC2 Crash.
Hi all, I work with Compaq Tru64 UNIX V5.1B (Rev. 2650) and IBM Informix Dynamic Server Version 9.40.FC2X1 This is a part of af file generated from the crash: 17:06:49 Assert Failed: No Exception Handler 17:06:49 Who: Session(17, root@deimos.icrcosmetics.local, 0, 23944be68…
Re.Extents & Indexes
Hello Everybody, Env : 9.30 uc3 AIX 5.1 1) Is there any limitation on the first extent ? This is the current scenario. Dbspace name - xyz Data dbspaces - 8 (each 2gb * 2 chunks) Index dbspaces - 4 (each 3 gb) Fragmented by round robin. First extent size 1000000 Now if I chan…
Where can I get the client API?
Hi, does anyone knows where to get the client API for Informix Dynamic Server 7.x? Perhaps we want to access the server via api directly. Kind regards, Joachim Engel.…
Informix optimizer
Hi, Does anyone know if the Informix Dynamic Server (7.31 or 9.4) database optimizer uses star schema optimizer techniques? Thank you, Tony…
TRUNCATE TABLE command in 9.3?
I am aware that Informix Dynamic Server previously has not included the TRUNCATE TABLE command. Does anyone know if 9.3 or 9.4 include this command?…
Re: 9.40 buggy? NOT !
Hi, not buggy ?!? My opinion is the opposite... In the last three months I had 5(!) calls open at TechSupport. The results are 3 oficial Bug Reports: Bug: 164853 SERVER CRASH OR INDEX CORRUPTION OCCURED WHEN BTSCANNER THREAD AND LOGRECOVERY RUNNING IN PARALLEL Bug: 164873…
Linux fgl_getenv
Informix Dynamic Server Version 9.30.UC3 on Linux. Do I have to do something before I can use the fgl_getenv call in a stored procedure? When I try I get 674: Routine (fgl_getenv) can not be resolved.…
Re: HELP - User threads "Waiting on a buffer"
Bug: 163653 REFER 162377 SAME BUG IN 9.40 ENGINE HUNG ON BLOCKED CKPT DUE TO DEADLOCK BETWEEN BTSCANNER AND SQLEXEC May be you are hitting this bug, or something similar (when you delete records, the btscanner is active). Check with tech support. Leave some time between you del…
Recreate Index
Hi, I want to migrate indexes from one dbs to another, where the name and the odrer to create indexes are stored, so i can generate all sql odrers to do that using awk tool. One way is : 1 - Dbschema of the database to obtain : dbname.sql 2 - G�n�rate un sql file to drop indexes …
Indexes
hello, here is my question. if you have a table called related_to and it has these fields: id active from_class_id from_id type_cid status_cid seq_num to_class_id to_id created_by create_date updated_by, update_date with this index: create index "informix".related_t…
New index
Hi, If you create a new index on a table already having some indexes is it necessary to run the 'update statistics' on everything again or for just the new index. (using IDS 7.31) Thank you, Tony…
Re. Indexes
Hi Everybody, How do we know the hit on a particular index, example : Table A has index named Z and I want to know how many times "index-Z" was hit by the SQL or it was not hitting at all. Thanks in advance, Sushil..... _________________________________________________________…
Index extents
Using IDS 9.30FC2 on an HP-UX 11.0 box. in creating detached indexes, I have noticed that sometimes the index has multiple extents in a particular dbspace. For example: prddwh:'dw_admin'.fl_keylinks 943776 40 prddwh:'dw_admin'.fl_keylinks_n1 139338 8 prddwh:'dw_admin'.fl_keylin…
RE: Dynamic Server versus Universal Server ??
Originally, Version 7.x was called 'Informix Dynamic Server', Version 9.0x was called 'Universal server' Starting with 9.1, Universal server became 'Dynamic server with Universal data option'. With 9.2, new names 'Internet Foundation 2000 ' and 'Dynamic server 2000' ware given…
Creating Index
Hi all. I have a problem when creating index. After build a index I can't build other on same table after 3 o 4 minutes. I receive an error "the table is locked". Environment: Solaris 2.6 IDS With J/Foundation 9.21.UC3 HDR running. Any idea about that? PS Sorry for my engl…
Informix Dynamic Server 2000 startup problem
Hi, While starting up informix in multi user mode , we wait for the database to come up by checking the onstat - o/p . But if the system is loaded, even after onstat shows status as online , the connection is rejected by the database . The wait loop that we do is as follow…
index duplicates PK, is it redundant?
I came across a database that has an index with the same columns, in the same order, as the primary key. Is this index likely to be useless and redundant? I expect that if the index had different sort orders it could be useful. How about one index that duplicates another - if …
Drop Index
Dear All, Is there anyways to speed up the drop index action? I have an index which is no longer used and want to drop it but it took me more than 4 hours. Does the lock table exculsive command help?? Thanks in advance Franklin…
why I can't see the output of "onstat -g wts"
test:/informix>onstat -g wst Informix Dynamic Server 2000 Version 9.21.FC7 -- On-Line -- Up 5 days 13:23:03 -- 11132960 Kbytes Wait statistics not enabled How to enable the wait statistics???…
informix SDK 2.81 ifxoledbc OLEDB and ADO
When Updating or deleting a non existing row in a table, the informix oledb provider produces an "UnSpecified error". Environment: Informix Dynamic Server 7.31 Informix SDK 2.81 ADO 2.6 Any help will be appreciated. Thanks in advance…
index
hello group this is my select : distretto and numero is not primary key select * from tt_master where distretto=0444 and numero=00563921 ---------------------------------------------------------------------------- ------------------- i have created the this index : CREATE inde…
Functional Indexes?
Ullo chaps. Each table in our db has a set of columns at the end, two of which indicate record status - they hold an integer value and a char(20) code which are ALWAYS related, i.e. the ref and code are a pair. Crap design but unfortunately historical (hysterical?) and the coders…
Set Explain On
Hi, I have a sql statment which takes a long time to run, and i tried the explain on and have the following output: 1) informix.cut: INDEX PATH Filters: informix.cut.status != 'X' (1) Index Keys: settled_at Lower Index Filter: informix.cut.settled_at >= datetime(2003-01-01 08:…
a question about sysindexes
According to the schema of sysindexes, a unique composite index is present on idxname + owner + tabid. Then why does the server disallow duplicate index name to be created even when the tables are different. create index test1 on table1(fld1); create index test1 on table2(fld1)…
What requires an IDS Linux?
Hello What requires an Informix Dynamic Server Linux a desktop and/or a network version of Linux? Thanks in advance Jacqueline Romero Miranda…
Informix v Oracle
Hi Is there a function in Informix Dynamic Server 2000 that is like Oracles CREATE SEQUENCE that uses NEXTVAL/CURVAL and %ROWCOUNT, ect? Thanks for all contributions Jordan jbruce@asaglobalserv.com…
RE: Non-vanilla index
From: Watson Paul <Paul.Watson@fefc.ac.uk> > > > From: "Watson, Paul" <Paul.Watson@aggregate.com> > > > > > >Simple question really what is a 'Non vanilla Index'? > > > > > >$ oncheck -cDI ireach:cw_doc_rend > > > > > >Validating indexes for ireach:informix.cw_doc_rend... > > > …
RE: Non-vanilla index
> From: "Watson, Paul" <Paul.Watson@aggregate.com> > > > >Simple question really what is a 'Non vanilla Index'? > > > >$ oncheck -cDI ireach:cw_doc_rend > > > >Validating indexes for ireach:informix.cw_doc_rend... > > Index 240_1481 > > Index fragment in DBspace datad…
Re: Non-vanilla index
From: "Watson, Paul" <Paul.Watson@aggregate.com> > >Simple question really what is a 'Non vanilla Index'? > >$ oncheck -cDI ireach:cw_doc_rend > >Validating indexes for ireach:informix.cw_doc_rend... > Index 240_1481 > Index fragment in DBspace datadbs01 > Index 24…
Non-vanilla index
Simple question really what is a 'Non vanilla Index'? $ oncheck -cDI ireach:cw_doc_rend Validating indexes for ireach:informix.cw_doc_rend... Index 240_1481 Index fragment in DBspace datadbs01 Index 240_1613 Index fragment in DBspace datadbs01 Index cw…
Retrieving product name
Hi all, Is their a system table somewhere on an informix server that stores the product name. For example 'Select owner from systables where tabname = � VERSION� will return the version of the server. I would like to be able to tell if a server is a Universal server or a Dynamic …
IDS 7.3x on Win2000?
Does Informix Online Dynamic Server 7.3x runs on Windows 2000 (Professional)? Thanks for your help. Guy Dillen…
Re: How to search for a string in a TEXT field
Hi, :-( SELECT name, REPLACE(text,"ZNOTREADY","found") AS your_output FROM tablewithtextfield; Blobs are not allowed in this expression. I use Informix Dynamic Server Version 7.31.UC2A…
Create user in Informix Dynamic Server
Hello all I`m new in INS. Could you help me? I have Database server with one user Informix. How to create another user to Database?…
Informix ODS on Win 2000?
Does Informix Dynamic Server V7.31.TC5 for Intel Pentium Windows NT 4 also run on Windows 2000? Thanks for any help. Guy Dillen ITP…
Informix cost???
Someone can said how much does Informix cost? I need to know: -Informix costs -cost for client Thanks very much. I need the last version of dynamic server for Unix. Ciao, Berna…
After CREATE INDEX
Raymond Chui wrote: > > If I > > CREATE INDEX table_ind ON tableA (col1, col2); > > That means will index col1, col2 in tableA. > But after I index tableA, I do INSERT/UPDATE/DELETE rows > Will also index the col1, col2 in tableA for me? Or I have to > DROP INDEX and CREATE INDEX…
Replication
Hello everybody. I would like to know if it is possible to replicate an Informix database between a UNIX-based 7.32UC2 Informix Dynamic Server and an linux-based IDS2000 without problems. Thanks in advance. jhernandez@geuropa.com…
rebuilding indexes
David Palmer wrote: > In 7.3, are there other ways to rebuild indexes other than dropping and > re-creating them? > DISABLE then ENABLE index(es) will cause them to be rebuilt: SET INDEXES FOR <tablename> DISABLED; -- All indexes on a table -or- SET INDEXES <indexname1>[, <in…
dynamic server with Informix distant database
We have this problem : - write of a html page (this pages will contain many many fields). - Receiving of the page data on a http server based on a M1 machine. - Using of 4gl/informix programs based on the M2 machine with the pages data - 4GL programs will set up a � result � tabl…
HELP! Informix Dynamic Server 7.3
I'm trying to install a new IDS on Linux (RedHat 6.1) on a cooked file. Everything looks right, but upon oninit, I receive the following: oninit: Cannot open chunk '/u1/naf_chunk'. errno = 2 oninit: Fatal error in shared memory initialization Log reflects: 09:11:07 Informi…
UDR Support in Informix Dynamic Server.
Can someone tell me what exact version of Informix Dynamic Server that first supported C User Defined Routines. I've tried searching for this on their website with no joy. (their advanced search doesnt work at all !) Rgds, Peter. Sent via Deja.com http://www.deja.com/ Before y…
OFFICE Connect V.1
Informix Office Connect, Version 1.0, is compatible with the following Informix servers: Informix Dynamic Server, Version 7.3 or later Informix Dynamic Server with Universal Data Option, Version 9.14 Informix Dynamic Server 2000, Version 9.2 or later e Informix-SE 7.23 n�o func…
Index
Hi all, Is it possible to drop and create an new index while there are users on the system and using that table? If yes, how ? Thanks in advance, Alex…
no index used
Have you tried an order by xxx ? where xxx is the indexed column.…
Re: Why sequential scan???
Have you tried an order by xxx where xxx is the indexed column?…
unique index implications
Does a unique index mean that no nulls are allowed in the columns for that index? How can this be so if null is by definition undefined and has no equivalence?…
System catalogue
Hello! Can anybody explain me how I can create trigger on "informix".systables? (The server I deal with is Informix Online Dynamic Server 7.3.) Max…
Keeping Indices Efficient
I have some questions regarding index rebuilds. It is recommended that we rebuild indexes and constraints on highly volatile tables on a regular basis. 1) What does "set indexes disable/enable" command do to an index. Can this be used as an alternative to "drop and create" an in…
Compatability between Informix products
Hi, I need some version compatability information for the following products. Hardware Platform: Hewlett Packard OS Platform: HP-UX version 10.20 Informix s/w: Informix Universal Server 9.20 Informix Dynamic Server 7.31 Informix Gateway to DRDA vers…
Index on IUS :-)
In IUS all indexes are detached index by default. How can I create a attached index? Thanks, Sash…
informix dynamic server on linux help
Hi all, I am an informix newbie, and i have problems running it on redhat linux 6.0. The installation went just fine, but now when i start dbaccess and try to create a new database i get this error message: 25584: Network driver can not access server program /opt/informix/lib/sq…
Informix Dynamic Server on IBM SSA
Can any one share their experiences, recommendations, pit-falls, comments about creating an IDS db engineOLTP environment on an IBM SSA Raid system? We have 2 SSA adapters and have 4 loops with 4 drives each. The IBM techs for the Smoothstart services will be coming next Tuesday…
Please help me!
Hello! 1, Can somebody give me information, what is the new features for Version 7.24 of Informix Dynamic Server according to Version 7.20 of Informix Dynamic Server? 2, Are Version 7.20 of Informix Dynamic Server and 7.20 INFORMIX-ESQL/C 2000 Year Compatible? 3, W…
Re: installing Informix dynamic server
From: "Joerg_Mauz@abs.org" <Joerg_Mauz@abs.org> > Is there something wrong the the gateway, Hotmail or are there just loads of idiots posting today. (Apart from me, that is! :-) ______________________________________________________ Get Your Private, Free Email at http://www.hot…
installing Informix dynamic server
hi all, can anybody give me an URL where to find a good description of how to setup and install an Informix Dynamic Server with using RedHat Linux ??? I've searched a whole day but founf nothing useful.. :( thx ind advance joerg…
Help! Cant start database service
Hello All I had my informix dynamic server (7.3) running fine till a few days back. Now the dynamic server service and the informix messenger service won't start automatically and if I try to start the server, it does start but I'm unable to connect to it. If I try to start the…
Dropping/Recreating Index vs Setting Disable/Enabled
Hi, I need to drop/create index for a very large volatile table(> 1 million rows) frequently to enhance performance. If the index has become inefficient, does disabling and enabling the index rebuild the entire index tree like what dropping and creating the index do or doe…
RE: code bar
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BEFAD7.0060F27E Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable In some HP…
Informix Online Dynamic Server DBA Book
Hello Could anyone recommend a good Informix Online Dynamic Server book. I did a search in Amazon.com but I could not decide on which one to choose. Thanks in advance. Ajay…
pricing for informix info?
Hello, Was wondering what other people out there paid for informix dynamic server 7.3... Basically, i wanted to know if they had a web server licensing schem like microsoft. or ibm's db2 (per cpu license). and would the licenses be transferable if I decided to move from le…
Re: Determining version dynamically
Hi, If you have Informix Dynamic Server then use the following sql-statement ' select DBINFO('version', 'full') from systables where tabid = 1' result from the sql is : Informix Dynamic Server Version 7.30.UC5 Take a look in Informix Guide to SQL: Syntax for more about DBINFO…
KAIO: out of OS resources error
Hi~ My informix dynamic server write "KAIO: out of OS resources error .." in online.log. This error log is written during ontape task. How can I solve this problem? platfom : SunOs 5.5.1 Informix Dynamic Server 7.24 uc6 Thanks.…
Index on foreign key constraint
Why does Informix create a duplicate index on columns used in foreign-key constraints?…
64bit IDS for Solaris 7/SPARC ?
Is there a 64bit Informix Dynamic Server 7.3x for Solaris 7/SPARC available? tia, joerg…
Posting from the Informix-list
what is the last version of Informix Dynamic Server for HP-UX 10.20, where can i find more Information about this.…
Latest versions for various Informix products ???
Which are the latest versions for Informix Dynamic Server Informix Dynamic Server, Workgroup Edition Informix 4GL Informix SQL on Solaris 7/SPARC ? Where can I find such informations on Informix's website ? tia, joerg…
cdr command line utility in informix 7.24
Hi, Is there a cdr command line utility in informix dynamic server 7.24? I tried to locate it, but the executable is nowhere to find. Thanks, Lu…
Problem Installing Informix Dynamic Server
I downloaded a Try&Buy version of Informix Dynamic Server V7.30 for NT. I installed it on an NT Server. The install seemed to go ok, but after a short time of investigating IECC, I got a blue screen. After this when I started the Command Center, a task seemed to start, but it w…
Indexing
Greetings all, Following some poor response times during recent tests of a new application, I've taken a look at the SQL generated and have a simple question for all you Informix gurus out there. If we have : (i) a composite index on a table defined on columns (A,B,C) (ii) a que…
Index.
Donde puedo encontrar algun manual o articulo sobre el manejo de los = indices de Informix 7.20 , sobre todo para el tema de optimizacion... Gracias. jhernandez@geuropa.com…
Problems starting IDS 7.30.TC7 on Windows NT SP4.
When i try to start informix dynamic Server, the following message appears "Only informix user can start informix dynamic server" this message appears when i logged on with the informix's user. When i try to start the service on the control panel , error 2140 appears.…
Out of buffer?
Hi, I got the following error message from an Informix IDS 7.30: <<Informix Dynamic Server>>> WARNING! Buffer pool size may cause Dynamic Server to get into a locked state. Recommended minimum buffer pool size is 4 times maximum concurrent user thre…
Next Extend For Index
I have a large table with 22,000,000 records and 10 indexes. The indexes are very large. can I change the next extent for indexes like "ALTER TABLE... MODIFY NEXT SIZE". Thanks in advance.…
Linux VS NT4.0
Hi, Is it true that Informix Dynamic Server workgroup edition 7.30 is ported for Linux, and if it is so does anyone can tell me what to chose between Linux and NT4.0 for running Informix Dynamic Server workgroup edition 7.30. Also I'd like to know for which version of Linux, Inf…
Starting Informix Dynamic Server !
Hi Gurus, Just wondering is there any difference in starting the informix engine as root user versus as Informix user. ? The reason why I ask this question is , the IDS 7.23 UC6 on HP-UX 10.2 crashes due to a bug (declared as bug by Informix Technical support)when we start in…
Informix Dynamic Server Archive/Restore
Hello All: We have a large scale Informix DB resident on an HP 9000, K460, with AutoRaid Disk Subsystem (218gb). And we are running IDS 7.30. Currently, we are using the Informix ontape archive/restore utility to archive the DB and to perform continuous logical logging. We u…
Any one know this?
Hi folks: Is there a script that can check informix on-line dynamic server is up and running or not? If not it will e-mail a note to D.B.A. groups Thanks in advance Garry…
converting Informix Online 5.1 esql/c to Dynamic Server esql/c?
Hi converting Informix Online 5.1 esql/c to Dynamic Server esql/c? What is the easiest way to do this? Is there a parser that could do this? edward…
RAID Technolgy
We are using Informix Online Dynamic Server 7.2. We are going in for a new DEC UNIX Server with RAID Technolgy. It incorporates mirroring at the hardware level. So is it not necessary to do mirroring using Informix?. Can anybody give suggestions regarding mirroring and other feat…
Informix on Linux
Does anybody know how much a copy of Informix Dynamic Server would run me for use on Linux?? Thanks in advance -steve…
Upgrade Dynamic Server 7.13 - 7.24
I need to upgrade Informix Dynamic Server version 7.13 to version 7.24. Can anyone advise of any problems they may have had whilst doing this?…
Informix Dynamic Server 7.31?
Is any information available regarding the release of IDS 7.31 for Unix? We have Sun E3000 and E4000 machines and are experiencing problems with both 7.30.UC3 and 7.30.UC5 and are curious about 7.31. Thanks. Carleen Avant Naval Safety Center Internet < cavant@safecen.navy.mil …
STRING FUNCTIONS
Are there functions for manipulating varchar type, like upper() or lower() in Informix Online Dynamic Server 7.2? Thanks in advance.…
Netscape Enterprise Connection for Informix Dynamic Server
Hi: Does anyone know the procedure for setting up a Netscape Enterprise Server to connect to an Informix Dynamic server on a remote machine? Michael…
oninit: shared library problem
I'm having problems when initialising the DB using oninit. Config: INFORMIX Dynamic Server Ver 7.23, on a UNISYS-UNIX SVR4. When Initializing, I get the error ...dynamic linker: oninit: symbol not found: gettimeofday The LD_LIBRARY_PATH is set to $INFORMIXDIR/bin and �INFORMIXDIR…
Initi DB
I'm having problems when initialising the DB. Config: INFORMIX Dynamic Server Ver 7.23, on a UNISYS-UNIX SVR4. When Initializing, I get the error ...dynamic linker: oninit: symbol not found: gettimeofday The LD_LIBRARY_PATH is set to $INFORMIXDIR/bin and �INFORMIXDIR/esql help wo…
Index on Informix Online 7.22 ?
I have installed a new Informix Online Dynamic Server 7.22UC3 on our server (HP-UX 10.20). I find it is much much slower than the Informix 7.12 Online DS server if I do not create index for a same program. Why and what is the difference between the two version of Dynamic serv…
Re: esqlvers statement.....results are different on 2 DB servers ???
Tim Jones wrote: > > I've installed Informix 7.30UC3 with the ClientSDK 2.01 software on 2 > servers. Let's call them Server A and B. > > Both A and B had a prior ESQL/C versions. > > After the install, logged in as informix userid on A and ran "esqlvers" > and got this : > I…
esqlvers statement.....results are different on 2 DB servers ???
I've installed Informix 7.30UC3 with the ClientSDK 2.01 software on 2 servers. Let's call them Server A and B. Both A and B had a prior ESQL/C versions. After the install, logged in as informix userid on A and ran "esqlvers" and got this : INFORMIX-ESQL Version 7.22.UC1 …
Re: Bitmap Index in Informix ?
> Are there bitmap index in Informix or any thing that performs like it ? > > We are bilding a data warehouse with Online 7.23 8.2 has bitmap indexes.…
Informix Dynamic Server Personal Edition
What development apps are known to work with IDS-PE for 95? Infrmx wants to sell me licenses for Dynamic 4gl, esql-c, ddvb for 150usd. Do these work and are there others? 150 sounds ok but the catch is is that the Open-Line Support is outrageous for this (3K usd for unlim. suppor…
Will informix 7.24.uc5 compatiable with solaris 7?
Hi there, I was wondering if Informix Dynamic Server 7.24.uc.5 will be compatiable with solaris 7 when it comes out? Thanks advance, Pat Militzer pmilitzer@ultracom.com…
Informix Online Dynamic Server 7.2.2
When I try to iniailize the shared memory I get an error "oninit: Critical error initializing shared memory" I checked the log and it says the base memory address is 0x80080000 and should be 0x80400000 when I change it it reverses. this is on a SCO open server 5. nay ideas.…
Informix Dynamic Server on Linux NOW!
Check out the Informix WEB Site. There is an announcement that IDS 7.3 is shipping on Linux TODAY! http://www.informix.com/ Art S. Kagel…
Problem installing to NT4.0 server
I'm trying to install Informix dynamic server workgroup edition to Primary domain Nt 4.0 Server. I have created Informix-Admin group and Informix account and grant it all Administrators rights and also Domain administrator rights. The server setup runs ok, but when setup is tryi…
Deployment Licenses of Informix Dynamic Server
I need a free Deployment Licenses of Informix Dynamic Server!…
Re: Informix Dynamic Server blocks
In article <3609EB18.2AB1B1CD@bull.net>, Helmut Leininger <Helmut.Leininger@bull.net> writes >Hi, > >Sporadically, the Informix server seems to block (every try to connect >or onstat times out and no reaction on onmode -ky). In the MSGPATH I >find the following message: > >09:03:…
Informix Dynamic Server blocks
Hi, Sporadically, the Informix server seems to block (every try to connect or onstat times out and no reaction on onmode -ky). In the MSGPATH I find the following message: 09:03:42 mt.c, line 8362, thread 2139, proc id 17096, mt_notifyvp timed out. Informix server is 7.22.UC2…
Informix Dynamic Server blocks
Hi, Sporadically, the Informix server seems to block (every try to connect or onstat times out and no reaction on onmode -ky). In the MSGPATH I find the following message: 09:03:42 mt.c, line 8362, thread 2139, proc id 17096, mt_notifyvp timed out. Informix server is 7.22.UC2…
Re: OnLine Dynamic Server 7.2 Vs INFORMIX Dynamic Server 7.3
On Tue, 28 Jul 1998 14:40:44 -0500, Ben Jazi <bjazi@fallschurch.esys.com> wrote: >What are the major differences between INFORMIX-OnLine Dynamic Server >7.2 and INFORMIX Dynamic Server 7.3? Is it ORDBMS vs RDMBS? No, IDS 9.x is the ORDBMS. This autumn the 7.3 and 9.x code lin…
Re: OnLine Dynamic Server 7.2 Vs INFORMIX Dynamic Server 7.3
Ben Jazi wrote: > > What are the major differences between INFORMIX-OnLine Dynamic Server > 7.2 and INFORMIX Dynamic Server 7.3? Is it ORDBMS vs RDMBS? > > Thanks, > Ben I don't know the differences in detail but you could check the following pages, where IDS 7.3 is described …
OnLine Dynamic Server 7.2 Vs INFORMIX Dynamic Server 7.3
What are the major differences between INFORMIX-OnLine Dynamic Server 7.2 and INFORMIX Dynamic Server 7.3? Is it ORDBMS vs RDMBS? Thanks, Ben…
Index
Hi...Users..... I am trying to create an dynamic index in a SPL. The sequence is...I select a unique numeric value from a table & concat it with a string and store it in a variable. Now how do i use this variable to create the index. I could do the same using ESQL/C…
Informix computer Base classes
Has any body used the Informix computer base training classes. I am wondering if any of the computer based training classes: "Informix Dynamic Server System Administration" or the "Managing and Optimizing Informix Dynamic Server Databases" is good. Thank You…
Re: Informix Online Dynamic Server 7 on Linux
Piet le Roux wrote: > > If anyone has succeeded to run Informix ODS 7 (SCO) on Linux help would > be appreciated. > I have installed iBCS and the shared libraries and the binaries work, > except that the engine cannot initialize shared memory: Error message > semctl: errno 22…
Informix Online Dynamic Server 7 on Linux
If anyone has succeeded to run Informix ODS 7 (SCO) on Linux help would be appreciated. I have installed iBCS and the shared libraries and the binaries work, except that the engine cannot initialize shared memory: Error message semctl: errno 22 create_vp: cannot allocat m…
Problems with Informix Dynamic Server for NT
Hi Has anyone tried downloading and running the dynamic server product for NT? I have it installed, but get the following error when I boot the system: AdmAgent.exe - Applicatioin error The instruction at "0x10087c69 referenced memory at "0x00000000". The memory could not be r…
Bi-directional traversal
Does bi-directional traversal apply to composite indexes? Cheers, Tony…
RE: What are the differences between Informix Dynamic Server
It is confusing! =20 Here's what I know: Prior to renaming: 7.2x =3D ODS 8.0 =3D XPS 9.1 =3D IUS After renaming: 7.2x =3D IDS 8.0 =3D IDS/AD/XP 9.1 =3D IDS/UDO=20 After the 7.3 release: 7.3 =3D IDS 9.1 =3D IDS/UDO After the 8.2 release: 8.0 =3D…
RE: What are the differences between Informix Dynamic Server and
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------ =_NextPart_001_01BDA3AF.9242A58C Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Good quest…
Re: Index for Informix Dynamic Server
William Lai wrote: > > Hello, > > We alreay upgrade our database server from SE5.X to IDS 7.3. After we > convert all the old data to the new server, we have some problems on the > index search. For example, a table: > > table : ith ( ithitno, ithname ), total 1,500,000 records…
Re: Index for Informix Dynamic Server
William Lai <rwie@netvigator.com> offerred: +We alreay upgrade our database server from SE5.X to IDS 7.3. After we +convert all the old data to the new server, we have some problems on the +index search. For example, a table: + +table : ith ( ithitno, ithname ), total 1,500,000…
Index for Informix Dynamic Server
Hello, We alreay upgrade our database server from SE5.X to IDS 7.3. After we convert all the old data to the new server, we have some problems on the index search. For example, a table: table : ith ( ithitno, ithname ), total 1,500,000 records index : ith_1 on ithitno, ithn…
Informix Dynamic Server 7.3
Hello, Since I'm planning a Data Warehouse, I would to do it with the new version of Dynamic Server. Impressions, stability and on which platform? Regards. Fernando _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Fernando Collalti Phone: +…
renaming an index
Does anyone know of a way to rename an index ?…
Informx-SE (7.13) Basic DBA question
If I issue : CREATE INDEX INDEX_NAME ON TABLE_NAME(COL_NAME) command, would this be a Clustered Index or Non-Clustered ?? TIA -asim…
Informix Dynamic Server & Text columns
Hi everybody, Can you help me ? I've created a table with the following structure : column type -------- ---- code smallint obs text How can I insert into this table with Java program ? I'm using Informix Java AP…
Index on float field ?
Can an index be created on a float field in Informix, or is it not advisable ? Dirk…
Intermittent Problem - error 529 Cannot attach to transaction
We have a HP-UX box (Ver 10.20) running Informix Online Dynamic Server Ver 7.13 and a NT Server (NT4.0) running Informix Online Dynamic Server Ver 7.23. We are trying to access some of the database tables resided in the HP-UX box from the NT Server via synonyms. But we faced inte…
Re: well deserved lambaste for changed installation tape formats
In article <350D6B4D.990E708A@garpac.com>, Jacob Salomon <jake@garpac.com> writes >Hi Family. > >Some weeks ago, as I was going through a complete, from-scratch >installation at my client site, I was happily "tar"ing my Informix tapes >into $INFORMIXDIR and running the install sc…
Re: How is disk space allocated to Indexes?
apatankar@s1.com wrote: > > My questions are as follows: > Assume that you create a table and allocate it an initial extent of some size. > Then you create an index on that table in the same dbspace. Then you add rows > to the table, so that nodes get created in the index. Is the…
How can I read the header tape of the archive created by ontape?
I have Informix Dynamic Server 7.23.UC1. I would like know the tape header structure created by ontape.…
Re: Informix indexes
>I have to decide to mirror the indexes yes or no. If I don't mirror >the indexes then I can use two disks for the indexes to increase the >performance. > >The thought behind is that if a disk with indexes chrashes then it >is simple to regenerate > >the indexes in another …
Informix indexes
<HTML> I have to decide to mirror the indexes yes or no. If I don't mirror the indexes then I can use two disks for the indexes to increase the performance. <BR>The thought behind is that if a disk with indexes chrashes then it is simple to regenerate <BR>the indexes in ano…
Re: Fragments vs location of tables
"Irwin Goldstein" <irwinNOSPAM@NOSPAMobjectsoft.comNOSPAM> writes: >When doing round-robin, the indexes do NOT get fragmented along with >the table. This would make index lookups very inefficient. Round robin >fragmentation cannot be used for an index. I will create an unique…
Re: Upgrading Informix from Online engine to Dynamic Server
Seth Grimes wrote: > > Jane Vohden wrote: > > > > I have been talking with Informix about upgrading our site from the > > 5.xx Online engine to 7.2x Dynamic Server. They said there was no cost > > I don't think that anyone has pointed out the mistaken terminology > h…
What's the difference between ODS 7.22 and 7.23?
What's the difference between Informix Online Dynamic Server version 7.22 and version 7.23? Thanks in advance. Bill Westphal Rodney District Council mis@rodney.govt.nz…
ODBC unix and dynamic SQL
Hi, Can someone give me some help on using informix odbc drivers (unix) with dynamic SQL on Informix-online dynamic server (7.22 unix) when I use "SQLprepare" I receive the message "too many or too few host variables given" but I think all is Ok R. Gueye…
Re: Puzzling ODBC Error ...
Another nice feature of MS-ACCES 2 is that it freaks out on indexes wich are not names. When you issue a create index statement, informix generates a name that starts with a blank. Give your indexes a name! Koen…
Re: detached index vs attached index
> > Is there any easy way to detach indexes in OnLine 5.x and upwards? > I don't think detached indexes were available prior to 7.1x (well, maybe 6.x). Anyway, the only way is to drop the existing index (if there is one) and then CREATE INDEX ... IN <dbspace>. Is that easy? Ma…
detached index vs attached index
Greeting... Can anyone comment on detached index vs attached index? Thanks in advance! Andy Chang…
Next Extent Calc.
Hi, I have INFORMIX-OnLine Dynamic Server Version 7.14.UD2. Does anyone know of a script or program to calculate the next extent size ? Thanks in advance Manuel…
Java and Informix Dynamic Server 7.x
Hi friends! I am trying to do server-side java cgi programming to connect to I-ODS 7.x. Do you know how I can do that? I heard it is possible to use the jdbc-odbc bridge( intersolve or openlink's), but the performance is too slow, because of jdbc to odbc and odbc to jdbc convert…
Re: Detached Index
There are two main advantages to seperating the indexes from the data chunks that I can think of. 1) By placing the data on seperate physical devices from the indexes, you might be able to get a performance boost by avoiding some potential disk contention. 2) Since on attache…
Indexes
If I have following table: table A customer char(10), inv_num int, bill_data date, ship_date date, bill_amt real, print_flag char(1) cust_index on (customer) cust_index2 on (customer, inv…
Re: Bit-Mapped Indexing Routines---Beta Testers Wanted
I thought it was "bitWISE" indexing not "bitmapped" indexing. Please correct me on this. Bill Gfroehrer...…
To index or not to index ? that is the (constraint) question.
Suppose you have a master table and a detail table. And let's suppose you have a unique constraint on the primary key of the master table and a foreign key constraint on the detail table, corresponding to this primary key. I may not have explained it very well, but the idea is …
Indexing issues, help
Hi, Can anyone clear me up about index, clustered index. 1. What is the best timing to use clustered index? 2. index A and index B has the same indexing columns but different order, such as (a, b, c) and (c, b, a), where a, b, c are columns. Will ithe proformance make d…
Informix Certified Professional Program Update
Informix offers two certification paths. Each path requires the successful completion of two exams. Each exam is US $250 and is between 60-90 minutes long. * Database Specialist for INFORMIX-OnLine Dynamic Server 7.x 111 - Database Fundamentals Exam 112 - Managin…
Re: Deleting Question
drop the index before the delete, then recreate it afterwards Sean Bradley…
Indexes....
Hello Everybody: My problem is like follow: I have a table with many thousands of rows, and that has indexes, if I drop the indexes and then re-create them, I get the following error: -103 ISAM error: illegal key descriptor (too many parts or too long). The ISAM proc…
Hopeful No-brainer !!!
If you select from a table (with or without indexes) and don't include an order by clause, what is the default order of the rows returned? Is this order affected by the presece or absence of indexes?…
Indexes
Hi: What problems, if any, on performance, storage etc. one may face with an index on a field which can take NULL. Let us assume that the field is an int or a char type. Thanks, -ajay -- Ajay Dankar (ajay@ios.ho.att.com) (908 949-6513 (V)) (908 949-8415 (F))…
Re: Bar coding and Informix
In article <kcjDDt9vr.MBn@netcom.com>, Kate Juliff <kcj@netcom.com> wrote: > >Does anyone know if Informix supports bar coding input? Any information >appreciated. > >Kate The way we have done this is. . . INPUT CONTROL-B Call GetBarCodeField_xyz() returni…
INDEX
Hello again people, I have many columns that had about 500 or more rows, so I would like o create a index by every one. How to create index in informix.4gl?? Thanks in advanced German from Mexico…
Re: INFORMIX-Online Dynamic Server intallation
copy the standard onconfig file and make as few changes as possible to the different parameters. after you are sure you can bring informix online, should you begin to make changes to the onconfig parameters. Use ONMONITOR to make the changes. It will protect you from many mista…
INFORMIX-Online Dynamic Server intallation
I'm about to install INFORMIX-Online Dynamic Server V.7.1 on a SPARC 1000. Has anyone installed this database on a sparc before? If yes...do you have any suggestions or could you give me any advice on certain aspects of the installation you felt might be important to take notice?…
Re: DUPLICATE KEYS
I have often found that changing the index to use the highly duplicate field as the first field of a 2 field composite index is useful. It will still use the index to access the field but the presence of the second field in the index reduces the duplication. Malcolm Weallans On…
Indexing
Hello all wizards, Could someone tell me how Informix pick and choose which index to use if I have a table with 2 indexes as following: table t_a ( f_1 integer, f_2 integer, f_3 integer, ..... ) index i_1(f_1, f_2) index i_2(f_3) and the where …
SQL Query Optmizer
The following two queries QUERY 1 and QUERY 2 are the output of SET EXPLAIN ON. I do not understand why the query optimizer does a sequential scan on root.alujobsh in QUERY 2. The only difference in the two queries are these lines: QUERY 1: atkliquh.inv_num = '12316' and QUER…
Query Optimizer
The following two queries QUERY 1 and QUERY 2 are the output of SET EXPLAIN ON. I do not understand why the query optimizer does a sequential scan on root.alujobsh in QUERY 2. The only difference in the two queries are these lines: QUERY 1: atkliquh.inv_num = '12316' and QUER…
Unique Indexes
I have a table in which there's a unique index created, and it involves 9 columns. I'm having a problem when I goto $select from it in one of my *.ec files. The sqlca.sqlcode returned is 100 (SQLNOTFOUND). When I looked it up in the ESQL manual, the ISAM error reads: "there is …
Unique Indexes
I have a table in which there's a unique index created, and it involves 9 columns. I'm having a problem when I goto $select from it in one of my *.ec files. The sqlca.sqlcode returned is 100 (SQLNOTFOUND). When I looked it up in the ESQL manual, the ISAM error reads: "there is …
Indexing strategy
Hi Informix Gurus, this question may well be a FAQ, but I'm rather new to this group and haven't read about it before. BTW: Is there a FAQ somewhere? I have several large tables under ONLINE 4.0 (soon to be upgraded to 4.1), whose structure is similar to: patient_n…
index selection
i think this may have been posted previously, but here it goes. how does informix sql determine which index to use when executing a query? the problem we are having is we have a table that has several indexs which include a given column (lets say column_001); all but one are com…
Corrupted Index
Hi, We use OnLine 4.00 on SCO box. Using tbcheck -cI we found that one of the index was bad. My options are to: 1. Let tbcheck repair the index 2. Drop the index and recreate it What are the tradeoffs involved in deciding between the two ? Thanks in advance for the re…
Index Size
Hi netter, Does anyone know exactly how to calculate the total index size of a particular table like you see when you do dbschema. According to the Informix Training 'Book', add 8 bytes to the length of each key, and then sum up all index entries, this should be the total index …
systable indexes
Quoting Dave Snyder... > Quoting Nick Rumble... >> I have to perform frequent validation against the tabname >> column within systables. This column is *not* indexed and >> therefore can be quite costly if a database has a large number >> of tables (200+). > Someone correct me…
Cluster index or not ?
Cluster index or not ??? Do any of you know when I may use a cluster index ? I have a 400Mbyte table with about 400000 rows in an Informix Online system version 4.1. How often may I recluster the index (alter...). Deletes will be v…
Rebuilding Indexes
Path: emory!europa.asd.contel.com!uunet!psinntp!nynexst.com!matrix From: matrix@nynnexst.com (Howard Greenblatt) Newsgroups: comp.databases.informix Message-ID: <1991Nov11.193952.16934@nynexst.com> Date: 11 Nov 91 19:39:52 GMT Sender: news@nynexst.com (For News purposes) Reply-To…
Informix Indexes
Hello, I have a question regarding a limitation on indexes that I read in the INFORMIX-4GL 4.0 Users Guide. The text from the guide is a follows... . Do not index columns that contain a large number of duplicate values, such as Y (for yes) or N (for no). Here …