A fix is available
APAR status
Closed as program error.
Error description
Customer is receiving the following abend for a client connection when 2 clients send a XA Rollback request for the same XID at the same time ABN=5C6-00D4007B,U=xxxCHIN,C=W9700.800.MMC -CSQMXARH, M=CSQGFRCV,LOC=CSQMLPLM.CSQMXARH+000028EC
Local fix
n/a
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend 5C6-00D4007B occurs in CSQMXARH * * if two xa_rollback requests are * * executed for the same XID concurrently, * * and the transaction is in a invalid * * state for xa_rollback. * **************************************************************** * RECOMMENDATION: * **************************************************************** Two xa client applications attempted to issue xa_rollback for an XID, however the transaction was not in the correct state to be rolled back. The first task detects the invalid state, and backs out the transaction before returning XAER_PROTO (-6). The second task also detects the invalid state and attempts to back out the transaction, however the first task was still backing it out. The second task detects that the EB associated with the transaction is in use and issues the reported abend.
Problem conclusion
CSQMXARH is changed to no longer abend in this situation. 000Y CSQMXARH
Temporary fix
Comments
APAR Information
APAR number
PI72141
Reported component name
WMQ Z/OS 8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-11-11
Closed date
2017-06-20
Last modified date
2017-08-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PI81712 UI48160
Modules/Macros
CSQMXARH
Fix information
Fixed component name
WMQ Z/OS 8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI48160
UP17/07/25 P F707
Fix is available
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Document Information
Modified date:
02 August 2017