A fix is available
APAR status
Closed as program error.
Error description
The abend occurs when attempting to open a queue that is in the middle of being deleted on another queue manager. CSQEOPEN detects that the LHQC version indicates that the queue is being deleted, and the DB2 entry does not (yet). When determining if this is an expected case, or an error, it relies on the MQSH.delcommit flag, which should be set at the same time as the LHQC version. Under certain timing conditions it is possible for the delcommit flag to be incorrectly reset before being stored in the CF. . Additional symptoms: CSQE137E CSQEOPEN Db2 and CF structure out of sync for queue <queue-name>, list header <number=list> header <number>, structure <number=strucnum>
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0, * * Release 2 Modification 0 and * * Release 3 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: When a shared queue is being opened and * * deleted at the same time by different * * qmgrs in a QSG, abend 5C6-00C51053 may * * occur accompanied by message CSQE137E * * reporting DB2 and the CF are out of * * sync. * **************************************************************** CSQEOPEN processing detects in the LHQC version that a queue is being deleted, but the DB2 entry does not yet. To determine if this is an expected case, or an error, it uses the delcommit flag in the MQSH, which should be set at the same time as the LHQC version. Under certain timing conditions it is possible for the delcommit flag to be incorrectly reset before this check is made, resulting in the unnecessary abend.
Problem conclusion
The check in CSQEOPEN has been updated so as not to take the abend or issue the CSQE137E message in this case.
Temporary fix
Comments
APAR Information
APAR number
PH39566
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-08-04
Closed date
2022-08-25
Last modified date
2022-10-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI82104 UI82105 UI82106
Modules/Macros
CSQEOPEN
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R100 PSY UI82106
UP22/09/17 P F209
R200 PSY UI82105
UP22/09/17 P F209
R300 PSY UI82104
UP22/09/17 P F209
Fix is available
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Document Information
Modified date:
03 October 2022