APAR status
Closed as program error.
Error description
When using a multi-instance queue manager an increase in memory usage may be seen from the IBM MQ process amqzlaa0.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users of multi-instance queue managers at IBM MQ 9.1 may be affected by this problem. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: IBM MQ maintains an internal process-wide file handle cache which can grow dynamically. When multi-instance queue managers were being used, a coding error introduced a window where memory used to grow this cache could be leaked between instances of IBM MQ threads.
Problem conclusion
The MQ queue manager code was modified so that the cache space allocated by a thread is freed if no other threads are using the process-wide file handle cache. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 LTS 9.1.0.9 v9.x CD 9.1.1 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT35519
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7271
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-01-13
Closed date
2021-06-30
Last modified date
2021-07-13
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
IBM MQ BASE MP
Fixed component ID
5724H7271
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910"}]
Document Information
Modified date:
14 July 2021