A fix is available
APAR status
Closed as program error.
Error description
After migrating to MQ v7.1 (from MQ v6.0) they found that their queue manager abended on it's initial startup, prior to receiving the 'CSQ9022I K1 CSQYASCP 'START QMGR' NORMAL COMPLETION' message. The abend received was : . ABN=0C4-00000010,U=SYSOPR ,C=R3600.710.MMC - CSQMFDSC,M=CSQGFRCV,LOC=CSQMLPLM.CSQMFDSC+000002D2 The customer established that this was caused by them specifying an ALTER QMGR PSCLUS(DISABLED) command in CSQINP2. If they remove this and command then the queue manager starts ok.
Local fix
Don't issue an ALTER QMGR PSCLUS(DISABLED) command in CSQINP2
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: ALTER QMGR PSCLUS(DISABLED) may cause * * an abend 0c4 in CSQMFDSC, if the * * channel initiator is not started. * **************************************************************** * RECOMMENDATION: * **************************************************************** The problem can occur when the cluster cache has not initialised, as the chinit has not been started. CSQMCAMM routine Check_Clus_Topics calls CSQMFDSC to disconnect the cache with an unitialised phcache - regardless of whether the chinit is available. If the phcache pointer has residual data an abend 0C4 may occur.
Problem conclusion
The code has been changed to initialise the phcache pointer before calling Check_Clus_Topics and not to call CSQMFDSC if the chinit is unavailable. 100Y CSQMCAMM
Temporary fix
Comments
APAR Information
APAR number
PM81722
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-01-30
Closed date
2013-03-20
Last modified date
2013-06-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK92701
Modules/Macros
CSQMCAMM
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UK92701
UP13/05/08 P F305
Fix is available
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Document Information
Modified date:
04 June 2013