Re: ORA-4031 error help.

The standard question would be "Have you made any recent changes to code, patches, parameters, etc?"

But I saw cursor_space_for_time = true in your init.ora and you've increased open_cursors from 500 to 750 few days ago, these can cause excessive memory usage for example.

Also, you might want to take a level 2 heapdump when the error occurs using:   event = "4031 trace name heapdump forever, level 2" and/or errorstack as well
  event = "4031 trace name errorstack forever, level 4"

If the code itself is ok (bind vars etc), then I'd look at setting cursor_space_for_time false, unless you want to add more memory to shared pool again...

Tanel.

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, October 29, 2003 9:39 PM

> Hello List, Need some help in resolving ORA-4031 error message. We are
using Lawson and for last few days users are getting ORA-4031 error 2-3 times a day in LAWSON log files but there is no error message in alert log file or any trace file. Both shared pool and large pool is set to 1GB. Below is the current init.ora file. We are on Oracle 9202 and AIX 5.1, using MTS.
>
> Thanks
>
>
>
>
> # Miscellaneous
> COMPATIBLE=9.2.0
> DB_NAME=LAWSON
> DB_FILES=1500
> GLOBAL_NAMES=TRUE
> DB_BLOCK_SIZE=8192
> DB_CACHE_SIZE=1792M
> DB_KEEP_CACHE_SIZE=16M
> LARGE_POOL_SIZE=1024M
> SHARED_POOL_SIZE=1024M
> SGA_MAX_SIZE = 5G
> DB_FILE_MULTIBLOCK_READ_COUNT=8
> CONTROL_FILE_RECORD_KEEP_TIME=45
> CURSOR_SHARING=SIMILAR
> OPEN_CURSORS=750 # From Lawson--Raised from 500 to 750 10/24/03
> BACKGROUND_DUMP_DEST=/appl/lawdb/oracle/admin/LAWSON/bdump
> CORE_DUMP_DEST=/appl/lawdb/oracle/admin/LAWSON/cdump
> USER_DUMP_DEST=/appl/lawdb/oracle/admin/LAWSON/udump
> TIMED_STATISTICS=TRUE
> CONTROL_FILES=("/appl/lawdb/oracle/data/db01/LAWSON/contrl_LAWSON_01.ctl",
> "/appl/lawdb/oracle/data/db02/LAWSON/contrl_LAWSON_02.ctl",
> "/appl/lawdb/oracle/data/db03/LAWSON/contrl_LAWSON_03.ctl",
> "/appl/lawdb/oracle/data/db04/LAWSON/contrl_LAWSON_04.ctl",
> "/appl/lawdb/oracle/data/db05/LAWSON/contrl_LAWSON_05.ctl")
>
> # Archive
> LOG_ARCHIVE_DEST=/appl/lawdb/oracle/archive_logs/LAWSON/
> LOG_ARCHIVE_DUPLEX_DEST=/appl/lawdb/oracle/archive_logs_2/LAWSON/
> LOG_ARCHIVE_FORMAT="ARC_LAWSON_%S.%T"
> LOG_ARCHIVE_START=TRUE
> # LOG_ARCHIVE_TRACE = 1
>
> # Distributed, Replication and Snapshot
> DB_DOMAIN=PHSOR.ORG
>
> # Pools
> JAVA_POOL_SIZE=0
>
> # Processes and Sessions
> # PROCESSES=800 Increased value per vendor JMK 6/09/03
> PROCESSES=1000
> SESSIONS=1140
> ENQUEUE_RESOURCES=8000
> TRANSACTION_AUDITING=FALSE
> REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
> FAST_START_MTTR_TARGET=1200
> SORT_AREA_SIZE=0
> HASH_AREA_SIZE=0
> UNDO_MANAGEMENT=AUTO
> UNDO_TABLESPACE=undo
> UNDO_RETENTION = 10800
> PGA_AGGREGATE_TARGET=1G
> WORKAREA_SIZE_POLICY = AUTO
> JOB_QUEUE_PROCESSES = 10
> LOG_BUFFER = 8192000 # To reduce 'log file parallel write' wait event
in v$system_event
> CURSOR_SPACE_FOR_TIME = TRUE
> SERVICE_NAMES=lawson_ax3202a
> LOCAL_LISTENER=lawson_ax3202a
> # Network Registration
> INSTANCE_NAME=LAWSON
> DISK_ASYNCH_IO = FALSE
> BACKUP_TAPE_IO_SLAVES=TRUE
> PARALLEL_THREADS_PER_CPU = 6
> PARALLEL_MAX_SERVERS = 6
> PARALLEL_MIN_SERVERS = 1
>

DISPATCHERS="(ADDRESS=(PROTOCOL=TCP)(HOST=provicon)(PORT=5000))(DISPATCHERS= 1)"
> MAX_DISPATCHERS = 3
> SHARED_SERVERS = 10
> MAX_SHARED_SERVERS = 50
>
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tanel Poder
  INET: tanel.poder.003_at_mail.ee

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