A fix is available
APAR status
Closed as program error.
Error description
Potential performance degradation when using dynamic queues
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 3 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Performance degradation when using * * dynamic queues. * **************************************************************** During queue creation storage is obtained for collecting queue statistics, and the storage is freed during queue deletion. When running with large numbers of dynamic queues, the high amount of queue creation/deletion processing can lead to storage fragmentation, resulting in performance degradation.
Problem conclusion
Processing has been changed to collect the required information without needing this area of storage, which is no longer obtained.
Temporary fix
Comments
APAR Information
APAR number
PH48005
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
300
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2022-07-14
Closed date
2022-07-21
Last modified date
2022-09-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI81592
Modules/Macros
CSQICPSD CSQICRE2 CSQIDEL5 CSQIMPU2 CSQMSTA1
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R300 PSY UI81592
UP22/08/03 P F208 ¢
Fix is available
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Document Information
Modified date:
01 September 2022