Re: TCP Listeners: Preferences?
david@smooth1.co.uk wrote: > I believe you need shm listeners as some commands reply on a shm > listener. Which command are you thinking of? There are utilities which attach direct to the main shared memory segments - ON-Stat being a representative - but that is different from using the shared memory *communications* segment that regular clients (like DB-Access or SQLCMD) use. There is, in fact, no requirement that you configure an olipcshm connection with your server -- it will work fine with just TCP connections (as a for instance; or just olipcstr, or any other connection type). Of course, the ON-* commands that connect to shared memory can only possibly be run on the machine where IDS is running. -- Jonathan Leffler #include <disclaimer.h> Email: jleffler@earthlink.net, jleffler@us.ibm.com Guardian of DBD::Informix v2005.02 -- http://dbi.perl.org/
On 5 Apr, 06:15, Jonathan Leffler <jleff...@earthlink.net> wrote: > d...@smooth1.co.uk wrote: > > I believe you need shm listeners as some commands reply on a shm > > listener. > > Which command are you thinking of? > > There are utilities which attach direct to the main shared memory > segments - ON-Stat being a representative - but that is different from > using the shared memory *communications* segment that regular clients > (like DB-Access or SQLCMD) use. > > There is, in fact, no requirement that you configure an olipcshm > connection with your server -- it will work fine with just TCP > connections (as a for instance; or just olipcstr, or any other > connection type). > > Of course, the ON-* commands that connect to shared memory can only > possibly be run on the machine where IDS is running. > > -- > Jonathan Leffler #include <disclaimer.h> > Email: jleff...@earthlink.net, jleff...@us.ibm.com > Guardian of DBD::Informix v2005.02 --http://dbi.perl.org/ Well we normally have 10 SHM connections configured and when I sent the onconfig to UK Tech Support for a case they advised me to increased this to 100 "as certain commands may required more shm connections". They were not specific!.
David Williams wrote: > On 5 Apr, 06:15, Jonathan Leffler wrote: >> David Williams wrote: >>> I believe you need shm listeners as some commands reply on a shm >>> listener. >> Which command are you thinking of? >> >> There are utilities which attach direct to the main shared memory >> segments - ON-Stat being a representative - but that is different from >> using the shared memory *communications* segment that regular clients >> (like DB-Access or SQLCMD) use. >> >> There is, in fact, no requirement that you configure an olipcshm >> connection with your server -- it will work fine with just TCP >> connections (as a for instance; or just olipcstr, or any other >> connection type). >> >> Of course, the ON-* commands that connect to shared memory can only >> possibly be run on the machine where IDS is running. > Well we normally have 10 SHM connections configured and when I sent > the onconfig to UK Tech Support for a case they advised me > to increased this to 100 "as certain commands may required more shm > connections". They were not specific!. If you still have a case number around, send it to me or the Scottish Poet, and we'll see what can be found out, one way or another. However, speaking from my side of the Atlantic, my system runs on just oltlitcp connections quite happily. Shared memory connections are not necessary for me to run IDS. YMMV, as they say, but I'm curious to know why it Vs. -- Jonathan Leffler #include <disclaimer.h> Email: jleffler@earthlink.net, jleffler@us.ibm.com Guardian of DBD::Informix v2007.0226 -- http://dbi.perl.org/