A fix is available
APAR status
Closed as program error.
Error description
MQ V9 5C6-00E7014F abend occurring due to an XA_COMMIT request failing with MQRA_THREAD_BUSY, because this reason is not an expected outcome when CSQXADPM calls the queue manager.
Local fix
n/a
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 0 Modification 0 and Release 1 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: When using XA client connections, * * various problems can be seen, including * * - 5C6-00E7014F in CSQXADPM * * - 5C6-00D4007B in CSQMXARH * * - 0C4 in CSQMXARH * * - Abnormal queue manager termination * * - Uncommitted work being unexpectedly * * committed * **************************************************************** When multiple tasks attempt to perform operations on the same XA transaction branch, inadequate serialisation could allow multiple tasks to run using the EB associated with that transaction concurrently. Depending on the sequence of operations performed while using that EB, a variety of symptoms can occur.
Problem conclusion
Serialisation between CSQMCPRH and CSQMXARH when switching to the EB associated with an XA transaction has been corrected to prevent multiple tasks working using the EB for the transaction at the same time.
Temporary fix
Comments
APAR Information
APAR number
PH15190
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-08-05
Closed date
2019-09-25
Last modified date
2019-11-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI65493 UI65494
Modules/Macros
CSQMCPRH CSQMXARH
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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Document Information
Modified date:
01 November 2019