A fix is available
APAR status
Closed as program error.
Error description
ABEND0C4 in CSQSHGMN +0000053C occurs when the expiry processing (CSQIEXP2) is processing a shared transmission queue which contains SMDS messages. CSQIMGES is expecting there to be a MMC_SEG_CHAINED_HDRS segment in the passed MDDI to be used for the XQH. However, CSQIEXP2 has not set one up, so the 0C4 occurs.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Expiry processing on a shared queue * * with SMDS offload on the CF structure * * used may result in an 0C4 abend with * * reason 00000004 in CSQSHGMN, when * * processing a message with headers that * * has been offloaded to SMDS. * **************************************************************** * RECOMMENDATION: * **************************************************************** The expiry processing for shared queues calls CSQIMGES to browse through all the messages on the queue to find expired messages. Upon retrieving the message, the processing expects a MMC_SEG_CHAINED_HDRS segment to be allocated to store the message headers. However in this case the segment has not been previously allocated, resulting the 0C4 Abend in CSQSHGMN.
Problem conclusion
The shared queue expiry processing has been updated to allocate a MMC_SEG_CHAINED_HDRS segment in this scenario, allowing CSQIMGES to use it, without causing a 0C4 Abend in CSQSHGMN. 100Y CSQIEXP2
Temporary fix
Comments
×**** PE14/11/04 FIX IN ERROR. SEE APAR PI28977 FOR DESCRIPTION
APAR Information
APAR number
PI04966
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
2013-10-29
Closed date
2013-12-20
Last modified date
2014-11-26
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI13788
Modules/Macros
CSQIEXP2
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI13788
UP14/03/04 P F403
Fix is available
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Document Information
Modified date:
26 November 2014