A fix is available
APAR status
Closed as program error.
Error description
During EOT processing, a batch application TCB hangs in CSQMEOTC due to incorrectly waiting for CSQBTEXT to end.
Local fix
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: A batch application hangs during EOT * * (end of task) processing. * * Until the batch application is * * canceled, the queue manager will hang * * during shutdown processing. * **************************************************************** During EOT processing, CSQMEOTC canceled the STIMER that was established to run CSQBTEXT, and depending on the result of the cancel attempt, determines whether it needs to wait on bloa.wEndECB. A small timing window in timer processing can result in the result returned to MQ incorrectly indicating the wait is needed. This results in CSQMEOTC waiting on the ECB indefinitely.
Problem conclusion
CSQMEOTC is changed to no longer cancel the STIMER or wait on bloa.wEndECB.
Temporary fix
Comments
APAR Information
APAR number
PH13424
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-06-17
Closed date
2019-10-30
Last modified date
2019-11-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI66152 UI66153
Modules/Macros
CSQMEOTC
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:
30 November 2019