A fix is available
APAR status
Closed as program error.
Error description
This APAR investigates creation of a diagnostic USERMOD to help analyze why instances of MQ incorrectly determined the actual state of the SMDS just prior to abending
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 2 Modification 0 and * * Release 3 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend 5C6-00C5105B in CSQEDSS2 after * * messages offloaded to SMDS are removed * * from shared queues. * * The abend is followed by abnormal * * queue manager termination S6C6. * **************************************************************** While connecting to an application structure containing messages offloaded to SMDS on the local queue manager, the state of the queue manager's SMDS was incorrectly determined to empty and the space map was reinitialised. When a messages was later removed from a shared queue on that structure, the deferred delete task abended when attempting to release the SMDS resources associated with the message due to the unexpected space map state.
Problem conclusion
CSQEDSC1 is changed to detect an incorrect empty status for the SMDS space map when connecting or disconnecting from the structure. When the incorrect state is detected, two actions are taken: 1) A 5C6-00C5105B dump is taken in CSQEDSC1 to aid diagnosing the cause of the unexpected state. 2) The space map is marked as invalid, causing it to be rebuilt with the correct state. MQSMDS/K
Temporary fix
Comments
APAR Information
APAR number
PH46037
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
200
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2022-04-30
Closed date
2022-12-05
Last modified date
2023-03-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI83579 UI83580
Modules/Macros
CSQEDSC1 CSQEDSS1 CSQEDSS4
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"200","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
01 March 2023