A fix is available
APAR status
Closed as program error.
Error description
ABEND5C6 00E50001 in CSQSCON2 occurs as CSQSCON2 is trying to get the LPVTPLTH latch however CSQIMPU2 already has the get-cursor latch and both of these latches have the same latch class (31), hence the abend occurs.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend 5C6-00E50001 occurs in CSQSCON2 * * when the queue manager is short on * * storage. * **************************************************************** * RECOMMENDATION: * **************************************************************** A task holding the get cursor latch attempted to get an ITRQP control block, and as there were no free blocks on the free chain, an attempt was made to get more storage. This attempt failed, due to insufficient private storage being available. CSQSCON2 was invoked to contract the queue manager's storage pools to potentially make more storage available, however this led to a request for the LPVT latch, which is incompatible with the get cursor latch. This caused the task to abend 5C6-00E50001.
Problem conclusion
CSQSCON2 is changed to skip the processing requiring the LPVT latch if an incompatible latch is already held, allowing the remaining contraction activity to take place before the storage request is retried. 100Y CSQSCON2 CSQSCTL CSQSRSUP
Temporary fix
Comments
APAR Information
APAR number
PI13081
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-03-05
Closed date
2014-05-30
Last modified date
2014-07-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI18438
Modules/Macros
CSQSCON2 CSQSCTL CSQSRSUP
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI18438
UP14/06/27 P F406
Fix is available
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Document Information
Modified date:
01 July 2014