A fix is available
APAR status
Closed as program error.
Error description
Wrong parameters was passed by CSQXBPAL to CSQXBPSG which results in the 0C4 in CSQXBPAL as below: CSQ1,ABN=0C4-00000004,C=R3600.710.CHIN, M=CSQXDISP,LOC=CSQXRCTL.CSQXBPAL+00738 A frequent occurrence of CSQX068I message might occur when CHINIT scavenger calls buffer pool.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Channel initiator may abend with S0C4 * * in CSQXBPAL if it runs out of usable * * storage. * **************************************************************** * RECOMMENDATION: * **************************************************************** If a channel initiator gets very low on remaining storage it will invoke the chinit transmission buffer scavenger process which will attempt to reclaim any unused storage. This scavenger process may fail to invoke a module with the correct parameters and an unrelated parameter may be incorrectly passed in as residual data and overwritten. The overwritten parameter may now result in a subsequent storage allocation call failing to obtain the correct amount of storage resulting in an S0C4 abend in CSQXBPAL.
Problem conclusion
The channel initiator transmission buffer scavenging process has been amended to ensure that the parameter is no longer overwritten. 100Y CSQXBPAL
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PM95224
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
2013-08-15
Closed date
2013-09-24
Last modified date
2013-11-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK97825
Modules/Macros
CSQXBPAL
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UK97825
UP13/10/16 P F310
Fix is available
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Document Information
Modified date:
04 November 2013