A fix is available
APAR status
Closed as program error.
Error description
Abend0C4 in an XM-POST-SRB due to an invalid ECB address occurs in a WMQ 710 client ASID The abend has occured as a cross-memory POST has been issued for a get-wait ECB at the same time as the address space is terminating and CSQMEOTC has released the BLOA (the get-wait ECB is contained in the BLOA).
Local fix
n/a
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: A slip trap with COMP=0C4 detects an * * abend 0C4 in POST processing when an * * application is canceled while in an * * MQGET with wait at the same time that * * the application is posted. * **************************************************************** * RECOMMENDATION: * **************************************************************** CSQM1P1W is called when a message arrives on a queue, and attempts to post the ECB for a waiting handle. However, before the handle is posted, the getting application goes through EOT processing and the BLOA containing the ECB is freed. As a result, the post operation abends 0C4 and is retried by the POST recovery routine.
Problem conclusion
CSQM1P1W is changed to detect that there are tasks in EOT processing in the getter's address space, and if so, to check that the TCB associated with the handle being posted is still active before attempting to post its ECB. 100Y CSQM1P1W
Temporary fix
Comments
×**** PE16/03/07 FIX IN ERROR. SEE APAR PI58645 FOR DESCRIPTION ×**** PE16/03/07 FIX IN ERROR. SEE APAR PI58645 FOR DESCRIPTION ×**** PE16/05/04 FIX IN ERROR. SEE APAR PI61683 FOR DESCRIPTION
APAR Information
APAR number
PI46510
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
2015-08-10
Closed date
2015-11-27
Last modified date
2016-05-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
012AC3 PI52987 UI33362
Modules/Macros
CSQM1P1W
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI33362
UP16/01/08 P F601
Fix is available
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Document Information
Modified date:
04 May 2016