A fix is available
APAR status
Closed as program error.
Error description
CSQY220I CSQSCTL Queue manager storage usage CSQY222E CSQSCTL Queue manager is critically short of local storage - take action Storage shortage in the queue manager address space. When the queue manager does a CF structure recovery, it creates a new storage pool for processing the logs. When recovery is finished, this pool is freed. Due to the storage alignment requirements for CF operations, this is a special pool, and some of the storage is not freed correctly. Due to the large number of recovery attempts, the queue manager leaks a large amount of storage (around 700MB) and uses up most of the available storage below the bar.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: The storage usage in the queue manager * * increases for each structure recovery * * that is processed. * * Eventually the queue manager runs short * * on storage and issues messages CSQY220I * * and CSQY222E. S878 abends may also * * occur. * **************************************************************** * RECOMMENDATION: * **************************************************************** When the queue manager recovers a CF structure, a storage pool is allocated to hold information on the relevant messages that are to be restored. The storage pool is released again after recovery completes. However, given that the storage required for CF operations needs to be page aligned, the normal buffer infrastructure is in a special case scenario and acquires additional storage. This additional storage is not released when the buffer pool is freed, causing the leak. Each structure recovery leaks at least x7E0000 bytes of storage.
Problem conclusion
The code has been changed to correctly release all the storage associated with a given storage pool. 100Y CSQSFPL
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI25129
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-09-04
Closed date
2014-10-27
Last modified date
2014-12-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI27324 UI22502
Modules/Macros
CSQSFPL
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI22502
UP14/11/13 P F411 ¢
Fix is available
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Document Information
Modified date:
01 December 2014