A fix is available
APAR status
Closed as program error.
Error description
An abend occurs during shutdown: ABN=0C4-00000011,U=xxxxxxx ,C=xxxxx.800.MMC -CSQMMTPR, M=CSQGFRCV,LOC=CSQMLPLM.CSQMMTPR Reg5 is bad. The source of the bad address is IVSA.PMARKTABLE, which points to an address that has been freed. The 0C4 occurs during shutdown when SYSTEM.CHLAUTH.DATA.QUEUE has not been defined. This results in an attempt to put an event message to SYSTEM.ADMIN.QMGR.EVENT. However, the mark-table for this queue has already been deleted, hence the 0C4 occurs. A follow-on symptom may be: ABN=5C6-00E50002,U=MQMVERS ,C=xxxxx.xxx.MMC -CSQMMTPR, M=CSQGFRCV,LOC=CSQMLPLM.CSQMMTPR 00E50002 means "UNLATCH REQUEST AND LATCH NOT OWNED BY REQUESTING EB". The 0C4 interfered with the latching process. Additional Symptom(s) Search Keyword(s): ABEND0C4 ABENDS0C4 S0C4 S00C4 0C4 ABEND5C6 ABENCS6C6 S5C6 S05C6 5C6 MTTB STOP QMGR
Local fix
Define SYSTEM.CHLAUTH.DATA.QUEUE. Reference the definition in CSQ4INSA in SCSQPROC.
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend 0C4 occurs in CSQMMTPR when * * master address space is terminating. * **************************************************************** * RECOMMENDATION: * **************************************************************** During queue manager termination CSQMESTP calls rsxAccessCache (CSQTXACH) which tries to open queue SYSTEM.CHLAUTH.DATA.QUEUE. However if this queue has not been defined then the open fails and an event message is written to SYSTEM.ADMIN.QMGR.EVENT. CSQIMPU2 calls CSQMMTPR which tries to access the queue's mark table (IVSA.pMarkTable). However CSQMESTP has already set MGBL.fMTTermReq, and the CSQMMTIN task may have already deleted the mark table so the thread abends with 0C4.
Problem conclusion
CSQMESTP has been changed so that rsxAccessCache is called before the mark table is deleted. 000Y CSQMESTP
Temporary fix
Comments
APAR Information
APAR number
PI47734
Reported component name
WMQ Z/OS 8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-08-27
Closed date
2015-09-01
Last modified date
2015-11-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI30746
Modules/Macros
CSQMESTP
Fix information
Fixed component name
WMQ Z/OS 8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI30746
UP15/10/07 P F510
Fix is available
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Document Information
Modified date:
03 November 2015