Fixes are available
APAR status
Closed as program error.
Error description
High cpu usage observed for amqzmur0 WebSphere MQ V7 process. MQ trace file shows an infinite loop on the amqzmur0 main thread and return code xecX_E_NO_SUCH_PIPE: Thread stack -> amqzmur0 -> zmuShutdownPhase -> zmuStopThisTask -> kpiStopAppSignalTask -> xcsConnectSimplePipe ----{ xcsConnectSimplePipe -----{ xcsQueryValueForSubpool -----} xcsQueryValueForSubpool rc=OK -----{ xcsQueryValueForSubpool -----} xcsQueryValueForSubpool rc=OK -----{ xcsGetMemFn component:23 function:466 length:2064 options:0 cbmindex:0 *pointer:1101a8c48 -----} xcsGetMemFn rc=OK -----{ xcsSetSocketAddress -----} xcsSetSocketAddress rc=OK Data: 0x00000007 -----{ xcsFreeMemFn component:23 pointer:1101a8c48 cbmindex:0 -----} xcsFreeMemFn rc=OK ----}! xcsConnectSimplePipe rc=xecX_E_NO_SUCH_PIPE Connecting to pipe: 0 ----{ xcsConnectSimplePipe -----{ xcsQueryValueForSubpool -----} xcsQueryValueForSubpool rc=OK -----{ xcsQueryValueForSubpool -----} xcsQueryValueForSubpool rc=OK -----{ xcsGetMemFn component:23 function:466 length:2064 options:0 cbmindex:0 *pointer:1101a8c48 -----} xcsGetMemFn rc=OK -----{ xcsSetSocketAddress -----} xcsSetSocketAddress rc=OK Data: 0x00000007 -----{ xcsFreeMemFn component:23 pointer:1101a8c48 cbmindex:0 -----} xcsFreeMemFn rc=OK ----}! xcsConnectSimplePipe rc=xecX_E_NO_SUCH_PIPE
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users making use of the Asynchronous Consume aspect of WebSphere MQ may be exposed to this problem. Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: If the utility manager (amqzmur0) fails to stop an application signal task (for unspecified reasons), it may retry indefinitely
Problem conclusion
The retry logic has now been limited to a maximum of 5 times. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.8 -------- -------------------- Windows U200335 AIX U845856 HP-UX (PA-RISC) U847965 HP-UX (Itanium) U847970 Solaris (SPARC) U847966 Solaris (x86-64) U847972 iSeries 7.0.1.8 Linux (x86) U847967 Linux (x86-64) U847971 Linux (zSeries) U847968 Linux (Power) U847969 v7.1 Platform Fix Pack 7.1.0.1 -------- -------------------- Windows 7.1.0.1 AIX 7.1.0.1 HP-UX (PA-RISC) 7.1.0.1 HP-UX (Itanium) 7.1.0.1 Solaris (SPARC) 7.1.0.1 Solaris (x86-64) 7.1.0.1 iSeries 7.1.0.1 Linux (x86) 7.1.0.1 Linux (x86-64) 7.1.0.1 Linux (zSeries) 7.1.0.1 Linux (Power) 7.1.0.1 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
IV09185
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
2011-10-19
Closed date
2011-12-29
Last modified date
2012-01-19
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 AIX V7
Fixed component ID
5724H7221
Applicable component levels
R701 PSY
UP
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0.1"}]
Document Information
Modified date:
03 October 2021