APAR status
Closed as program error.
Error description
After applying fixpack 8.0.0.5, putting messages onto queues is very slow. MQPUTs take much longer than expected and trace of the responsible amqrmppa process shows many delays. The zsqMQPUT call takes many multiples of the 5 ms threshold to complete. For example: 16:07:00.361008 978748.163 CONN:0000ae (07)--------{ zsqMQPUT 16:07:17.065394 978748.163 CONN:0000ae (07)--------} zsqMQPUT rc=OK FunctionTime=62338 Inspection within the MQPUT call shows multiple delays in opening the mqat.ini file and what looks parsing through the file: 16:07:00.361012 978748.163 CONN:0000ae (08)---------{ zsqConfigureAT 16:07:04.306651 978748.163 CONN:0000ae INI_FILE: Opened file /MQHA/qmgrs/QMNAME/mqat.ini. 16:07:08.819812 978748.163 CONN:0000ae (08)---------} zsqConfigureAT rc=OK FunctionTime=73829 16:07:08.819833 978748.163 CONN:0000ae (08)---------{ zsqConfigureAT 16:07:08.819859 978748.163 CONN:0000ae (09)----------{ zsqLoadATConfigFile *16:07:13.027157 978748.163 CONN:0000ae INI_FILE: Opened file /MQHA/qmgrs/QMNAME/mqat.ini. 16:07:17.063826 978748.163 CONN:0000ae (09)----------} zsqLoadATConfigFile rc=OK FunctionTime=65491 16:07:17.064099 978748.163 CONN:0000ae (08)---------} zsqConfigureAT rc=OK FunctionTime=64322
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users using MQ 8.0.0.5 Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: This problem occurred because of the side effect of a change made for AMQP activity trace in MQ 8.0.0.5. The change caused the queue manager often opening the mqat.ini file even for non AMQP connections.
Problem conclusion
Appropriate code changes have been made to ensure the changes made for AMQP activity trace is restricted only to AMQP connections. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.6 v9.0 CD 9.0.2 v9.0 LTS 9.0.0.1 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT16751
Reported component name
WMQ BASE MULTIP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-08-24
Closed date
2016-11-30
Last modified date
2017-06-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ BASE MULTIP
Fixed component ID
5724H7251
Applicable component levels
R800 PSY
UP
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Document Information
Modified date:
01 June 2017