Re: lock table overflow

HK You can try bumping up the LOCKS parameter in your onconfig file and restart the database engine. Looks like the SQL that is being fired at this point does a sequential scan of a large table whose lock mode is set to ROW. If your package allows you to generate the sqlexplain.out file (the SQL EXPLAIN file) by setting some environment variable, do that and find the offending SQL and maybe create an index so that the table is no longer scanned sequentially but uses your newly created index. If you dont want to mess around with the database schema, you could report the problem to your software package developer and ask him to look at it, so he can create the index at his end. HTH Sujit Pal ______________________________ Reply Separator _________________________________ Subject: lock table overflow Author: HK Chan <hkchan@idt.com> at Internet Date: 2/25/98 8:56 PM hi i'm running ods7.23uc1 on hp-ux10.20. this application is an off-the-shelf manufacutrin gpkg which runs on top of informix. whenever a particular trnasaction the application bombs out with the errors below: %SQLCODE: -244 Could not do a physical-order read to fetch next row. %SQLERRD2: -134 ISAM error: no more locks and in looking at the log file , i saw this error: 19:13:32 Lock table overflow - user id 102, session id 47 i'm wondering if anyone has any ideas on this. i did do oncheck on the tables and indices the sql was after, and it came back okay. i'm attaching my onconfig file. #************************************************************************** # # INFORMIX SOFTWARE, INC. # # Title: onconfig.std # Description: INFORMIX-OnLine Configuration Parameters # #************************************************************************** # Root Dbspace Configuration ROOTNAME root_dbs # Root dbspace name ROOTPATH /PRD1/root # Path for device containing root dbspace ROOTOFFSET 10 # Offset of root dbspace into device (Kbytes) ROOTSIZE 499980 # Size of root dbspace (Kbytes) # Disk Mirroring Configuration Parameters MIRROR 0 # Mirroring flag (Yes = 1, No = 0) MIRRORPATH # Path for device containing mirrored root MIRROROFFSET 0 # Offset into mirrored device (Kbytes) # Physical Log Configuration PHYSDBS phy_dbs # Location (dbspace) of physical log PHYSFILE 95000 # Physical log file size (Kbytes) # Logical Log Configuration LOGFILES 9 # Number of logical log files LOGSIZE 30000 # Logical log size (Kbytes) # Diagnostics MSGPATH /apps/informix/log/wsm_prd1.log # System message log file path CONSOLE /apps/informix/log/console_prd1.log # System console message path ALARMPROGRAM /apps/informix/etc/no_log.sh # Alarm program path # System Archive Tape Device TAPEDEV /mis/dbsave/comets.db # Tape device path TAPEBLK 16 # Tape block size (Kbytes) TAPESIZE 2000000000 # Maximum amount of data to put on tape (Kbytes) # Log Archive Tape Device LTAPEDEV /logsave/comets.log # Log tape device path LTAPEBLK 16 # Log tape block size (Kbytes) LTAPESIZE 2000000 # Max amount of data to put on log tape (Kbytes) # Optical STAGEBLOB ,1 # INFORMIX-OnLine/Optical staging area # System Configuration SERVERNUM 1 # Unique id corresponding to a OnLine instance DBSERVERNAME wsm_prd1 # Name of default database server DBSERVERALIASES penang_prd1 # List of alternate dbservernames NETTYPE ipcshm,1,50,CPU # Configure poll thread(s) for nettype NETTYPE soctcp,1,50,NET # Configure poll thread(s) for nettype DEADLOCK_TIMEOUT 60 # Max time to wait of lock in distributed env. RESIDENT 1 # Forced residency flag (Yes = 1, No = 0) MULTIPROCESSOR 0 # 0 for single-processor, 1 for multi-processor NUMCPUVPS 1 # Number of user (cpu) vps SINGLE_CPU_VP 1 # If non-zero, limit number of cpu vps to one NOAGE 0 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors # Shared Memory Parameters LOCKS 200000 # Maximum number of locks BUFFERS 200000 # Maximum number of shared buffers NUMAIOVPS 10 # Number of IO vps PHYSBUFF 32 # Physical log buffer size (Kbytes) LOGBUFF 32 # Logical log buffer size (Kbytes)LOGSMAX 20 # Maximum number of logical log files CLEANERS 10 # Number of buffer cleaner processes SHMBASE 0x0 # Shared memory base address SHMVIRTSIZE 120000 # initial virtual shared memory segment size SHMADD 65536 # Size of new shared memory segments (Kbytes) SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited CKPTINTVL 300 # Check point interval (in sec) LRUS 128 # Number of LRU queues LRU_MAX_DIRTY 60 # LRU percent dirty begin cleaning limit LRU_MIN_DIRTY 50 # LRU percent dirty end cleaning limit LTXHWM 50 # Long transaction high water mark percentage LTXEHWM 60 # Long transaction high water mark (exclusive) TXTIMEOUT 0x12c # Transaction timeout (in sec) STACKSIZE 32 # Stack size (Kbytes) # System Page Size # BUFFSIZE - OnLine no longer supports this configuration parameter. # To determine the page size used by OnLine on your platform # see the last line of output from the command, 'onstat -b'. # Recovery Variables # OFF_RECVRY_THREADS: # Number of parallel worker threads during fast recovery or an offline restore. # ON_RECVRY_THREADS: # Number of parallel worker threads during an online restore. OFF_RECVRY_THREADS 10 # Default number of offline worker threads ON_RECVRY_THREADS 1 # Default number of online worker threads # Data Replication Variables # DRAUTO: 0 manual, 1 retain type, 2 reverse type DRAUTO 0 # DR automatic switchover DRINTERVAL 30 # DR max time between DR buffer flushes (in sec) DRTIMEOUT 30 # DR network timeout (in sec)DRLOSTFOUND /apps/informix/etc/dr.lostfound # DR lost+found file path # CDR Variables CDR_LOGBUFFERS 2048 # size of log reading buffer pool (Kbytes) CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu-vp,additional) CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds) CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR queue (Kbytes) # Backup/Restore variables BAR_ACT