APAR status
Closed as program error.
Error description
Probe Id :- XC130004 Component :- xehExceptionHandler Program Name :- amqzlaa0 UserApp :- FALSE Major Errorcode :- STOP Minor Errorcode :- OK Probe Type :- HALT6109 Probe Severity :- 1 Probe Description :- AMQ6109: An internal WebSphere MQ error has occurred. Arith1 :- 11 (0xb) Comment1 :- SIGSEGV: address not mapped(0x28b4) MQM Function Stack zlaMainThread zlaProcessMessage zlaProcessSPIRequest zlaSPIKernel zsqSPIKernel kpiGeneric lpiSPICollectStatistics kqiShadowQListStatistics xcsFFST The problem appears to be timing related and affects only a single thread responsible for statistics gathering. The rest of the queue manager and applications appear to be unaffected and will continue. The statistics gathering will resume when the queue manager is restarted.
Local fix
Restart queue manager
Problem summary
**************************************************************** USERS AFFECTED: Users of WebSphere MQ V8 running with queue manager statistics enabled. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: An extremely rare race condition caused a memory access violation in an MQ agent process (amqlzaa0). This happened during queue statistic gathering. The affected process terminated with SIGSEGV.
Problem conclusion
The MQ code has been modified to prevent the potential race condition during statistic gathering. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.6 v9.0 CD 9.0.4 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
IT13179
Reported component name
WMQ BASE MULTIP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-01-14
Closed date
2016-09-30
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