Fixes are available
APAR status
Closed as program error.
Error description
When a large build up of messages occurs on the SYSTEM.CLUSTER.TRANSMISSION.QUEUE, significant slow down is seen in processing these messages (channel 'get' time). This also affects other queues where multiple applications need to perform 'Get by CorrelId' and the queue is allowed to grow deep.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users of WebSphere MQ on 32 bit distributed platforms who expect a deep build up of messages on any queue from which applications get messages by CorrelID. A common internal use of this function is the SYSTEM.CLUSTER.TRANSMIT.QUEUE Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: Contention between multiple getting applications causes delay in retrieving correct message by correlation identifier. This is not an issue on 64 bit platforms where an alternative mechanism is used to retrieve the appropriate message, which has different performance characteristics.
Problem conclusion
The 'get message' functionality has been improved to reduce time taken to identify messages for particular correlation identifier and thereby reduce contention between processes. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.11 -------- -------------------- Windows 7.0.1.11 AIX 7.0.1.11 HP-UX (PA-RISC) 7.0.1.11 HP-UX (Itanium) 7.0.1.11 Solaris (SPARC) 7.0.1.11 Solaris (x86-64) 7.0.1.11 iSeries 7.0.1.11 Linux (x86) 7.0.1.11 Linux (x86-64) 7.0.1.11 Linux (zSeries) 7.0.1.11 Linux (Power) 7.0.1.11 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 Platform v7.5 -------- -------------------- Multiplatforms 7.5.0.2 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
IC89405
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-01-09
Closed date
2013-01-22
Last modified date
2013-01-22
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 WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R700 PSY
UP
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Document Information
Modified date:
31 March 2023