A fix is available
APAR status
Closed as program error.
Error description
Queue manager abended CSQV086E QUEUE MANAGER ABNORMAL TERMINATION REASON=00E50702 Dump title: ABN=5C6-00D40025,U=SYSOPR,C=R3600.710.MMC-CSQMLTR0, M=CSQGFRCV,LOC=CSQMLPLM.CSQMLTR0+00000BD8 Reason code X'00D44007' CSQM_ABEND_MMC_ERROR There is a window in which a shared queue may be deleted, causing fields in the IVSA to be cleared (e.g. IVSA.pVSObject) and at the same time a list-transition event may execute which refers to the cleared IVSA, resulting in the 5C6-00D40025 abend.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Various abends occur when a shared * * queue is deleted on a different queue * * manager in the queue sharing group, and * * the local queue manager is processing a * * list transition for the queue. * * * * Symptoms can include: * * - Abend 0C4 in CSQMLTR0 * * - Abend 5C6-00C5101A in CSQEBMON * * - Abend 5C6-00D40025 in CSQMLTR0 * * - Abend 5C6-00E50002 in CSQMREF1 * * The abends are followed by abnormal * * queue manager termination 6C6 with * * REASON=00E50702 * **************************************************************** * RECOMMENDATION: * **************************************************************** Insufficient serialisation between list transition exit processing for a shared queue and shared queue deletion processing can allow CSQICDSQ to free the IVSA for a shared queue that has just been deleted on another queue manager in the queue sharing group, while a list transition is being processed for that shared queue. Depending on the type of list transition being processed, and how quickly the freed IVSA is reused by another queue, this can lead to several different abends occurring in list transition processing. The abnormal termination of the SRB processing the list transition is unexpected, and results in the queue manager terminating abnormally.
Problem conclusion
The serialisation between shared queue deletion and list transition processing is improved to prevent the IVSA being freed while still being used by list transition processing. 100Y CSQELTRX CSQICDSQ CSQIEXP2 CSQILEPL CSQMLTRX CSQMLTR0
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI63204
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-05-27
Closed date
2016-08-26
Last modified date
2016-10-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI66133 UI40383
Modules/Macros
CSQELTRX CSQICDSQ CSQIEXP2 CSQILEPL CSQMLTRX CSQMLTR0
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI40383
UP16/09/20 P F609 ¢
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
03 October 2016