A fix is available
APAR status
Closed as program error.
Error description
MQ Development finds that there is a storage leak when processing DISPLAY CHSTATUS commands with filters - this leads to a gradual accumulation of storage in the 'MMC DISPLAY POOL' PHB matching that seen in dump review. In the case of this APAR this has exhausted almost all of the available storage for the queue manager address space. . Additional keywords / possible symptoms : ABEND878 storage leak Subpool 229 Key 7 SP229 KEY7 K7
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0 and Release 2 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: When running a DISPLAY CHSTATUS(*) * * SHORT command, it is possible for a * * storage leak to occur. As a result of * * this, an abend may occur. * **************************************************************** The code which handles the current channel status leaks storage when determining that the current shared channel status should not be displayed. Over time this leaked storage built up which resulted in a queue manager becoming short on storage and subsequently abending.
Problem conclusion
The code has been changed to free storage in the event that the current channel does not match the filter. As a result, storage no longer leaks and therefore the subsequent abend does not occur.
Temporary fix
Comments
APAR Information
APAR number
PH40881
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-09-25
Closed date
2021-12-14
Last modified date
2022-03-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI78541 UI78542
Modules/Macros
CSQM1DGS
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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Document Information
Modified date:
02 March 2022