A fix is available
APAR status
Closed as program error.
Error description
A CLEAR QLOCAL command is issued for a shared application queue. The queue is defined with trigger type FIRST. The subsequent put of a message to this shared queue does not generate a trigger message on the queue-manager on which the CLEAR QLOCAL was issued.
Local fix
n/a
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: After a CLEAR QLOCAL command for a * * shared queue, the subsequent MQPUT does * * not generate a trigger message for this * * QMGR. * **************************************************************** * RECOMMENDATION: * **************************************************************** A CLEAR QLOCAL command is issued for a shared queue defined with trigger type FIRST. At the end of CLEAR QLOCAL processing the queue is closed, and if there are no more applications with the queue open, a 'last-closer' broadcast is sent to all queue-managers in the group to indicate that the queue is no longer open. When the 'last-closer' broadcast is processed on each queue-manager it should cause list-transition monitoring for the queue to be started. However, on the queue-manager on which the CLEAR QLOCAL processing was taking place, the 'last-closer' broadcast is not processed as the CLEAR QLOCAL thread still has a lock on the shared queue. Consequently when a message is later PUT to the shared queue, a trigger message is not generated on the queue-manager on which the CLEAR QLOCAL was issued.
Problem conclusion
Module CSQMTAPB has been updated for the reported problem to delay processing of the 'last-closer' broadcast if there is a lock on the shared queue. Five attempts will be made to obtain the lock at quarter second intervals. If the lock is still held after this time processing will continue as it did before this APAR. 000Y CSQMTAPB
Temporary fix
Comments
APAR Information
APAR number
PI66238
Reported component name
WMQ Z/OS 8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-07-21
Closed date
2016-12-20
Last modified date
2017-02-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI73301 UI43477
Modules/Macros
CSQMTAPB
Fix information
Fixed component name
WMQ Z/OS 8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI43477
UP17/01/27 P F701
Fix is available
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Document Information
Modified date:
01 February 2017