A fix is available
APAR status
Closed as program error.
Error description
An abend0c4 occurs during the process of an asynchronous post routine. The problem ocurs when a z/OS 701 qmgr is connected to a batch job. when the batch job gets canceled we get the 0c4 abend in the asynchronous post prcess due to an invalid ecb address
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 0 Modification 1 and 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. * **************************************************************** * RECOMMENDATION: * **************************************************************** When an application is cancelled, CSQMDALL is invoked to deallocate resources in the queue manager address space associated with an abending task. During this deallocation processing, all handles the task owns are closed. If the application was in a get wait when it was canceled, when a handle is closed a cross memory post is scheduled to post the ECB the getter was waiting on. This ECB is part of the BLOA allocated when the application connected to MQ, however in parallel with deallocation processing CSQMEOTC is invoked to clean up MQ resources in the application address space, including the BLOA. If CSQMEOTC frees the BLOA before deallocation processing posts the ECB in the BLOA, the reported abend occurs and is retried by POST recovery routines.
Problem conclusion
CSQM1P1W is changed to no longer post the ECB if the mthr associated with the ECB indicates it is going through deallocation processing. 010Y 100Y CSQMDALL CSQM1P1W
Temporary fix
Comments
×**** PE16/05/04 FIX IN ERROR. SEE APAR PI61683 FOR DESCRIPTION
APAR Information
APAR number
PI08608
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
018
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-12-27
Closed date
2014-03-26
Last modified date
2016-05-12
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI16411 UI16412
Modules/Macros
CSQMDALL CSQM1P1W
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
Fix is available
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Document Information
Modified date:
12 May 2016