A fix is available
APAR status
Closed as program error.
Error description
DUMP TITLE=CSQ1,ABN=5C6-00C5101A,U=SYSOPR, -CSQEBMON,M=CSQGFRCV,LOC=CSQELPLM.CSQEBMON *CSQV086E QUEUE MANAGER ABNORMAL TERMINATION REASON=00E50702 IEF450I CSQ1MSTR CSQ1MSTR - ABEND=S6C6 U0000 REASON=00E50702 The problem occurs due to the SCB associated with an application queue being deleted by termination checkpoint processing at the same time as list transition processing is attempting to locate and use the SCB. Additional Keywords: CSQV086E ABEND 5C6 ABEND5C6 00C5101A 00E50702
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend code 5C6-00C5101A occurs in * * module CSQEBMON after CF failure, * * followed by abnormal QMGR termination. * **************************************************************** The problem occurs during a very specific timing window & circumstance, involving both shared queues and triggering. The SCB associated with an application queue is being deleted, whilst at the same time as list transition processing attempts to locate and use this same SCB. This can occur during the following: CF Failure, STOP QMGR MODE(FORCE)
Problem conclusion
Extra latch and condition logic enabled at the call to the module where the problem ABEND was noted. This is to remove the particular window of time where processing could remove the SCB that list transition processing would be seeking out.
Temporary fix
Comments
APAR Information
APAR number
PH20205
Reported component name
IBM MQ Z/OS V8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-12-11
Closed date
2020-03-18
Last modified date
2020-06-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI68466
Modules/Macros
CSQMLTR0
Fix information
Fixed component name
IBM MQ Z/OS V8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI68466
UP20/05/28 P F005 ¢
Fix is available
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Document Information
Modified date:
02 June 2020