Fixes are available
APAR status
Closed as program error.
Error description
The repository manager in a partial respository unnecessarily subscribes to each cluster queue manager that it is aware of. When using clustered pubslish/subscribe, this causes a significant increase in the number of subscriptions that are made, and in large clusters this can cause performance problems.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All clusters are affected although normally the problem is fairly benign just causing a little extra unnecessary processing. However, in large Pub/Sub Clusters the extra processing can be significant and cause performance problems. Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: The problem is caused by the repository manager unnecessarily subscribing to each cluster queue manager it knows about. In a cluster without Pub/Sub this does not cause too much extra processing but with cluster topics there is a very significant increase in the number of subscriptions made and in large clusters can cause a performance problem.
Problem conclusion
The extra subscriptions have been removed. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.10 -------- -------------------- Windows U200352 AIX U853055 HP-UX (PA-RISC) U853082 HP-UX (Itanium) U853087 Solaris (SPARC) U853083 Solaris (x86-64) U853089 iSeries 7.0.1.10 Linux (x86) U853084 Linux (x86-64) U853088 Linux (zSeries) U853085 Linux (Power) U853086 v7.1 Platform Fix Pack 7.1.0.3 -------- -------------------- Windows 7.1.0.3 AIX 7.1.0.3 HP-UX (Itanium) 7.1.0.3 Solaris (SPARC) 7.1.0.3 Solaris (x86-64) 7.1.0.3 iSeries 7.1.0.3 Linux (x86) 7.1.0.3 Linux (x86-64) 7.1.0.3 Linux (zSeries) 7.1.0.3 Linux (Power) 7.1.0.3 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
IV19854
Reported component name
WMQ AIX V7
Reported component ID
5724H7221
Reported release
701
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-04-18
Closed date
2012-07-17
Last modified date
2013-05-13
APAR is sysrouted FROM one or more of the following:
PM57663
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ AIX V7
Fixed component ID
5724H7221
Applicable component levels
R701 PSY
UP
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Document Information
Modified date:
31 March 2023