PI56679: WMQ 7.1: CHIN FAILS WITH ABN=5C6-00940001 AFTER ENABLING CHANGES ADDED BY PI36807 16/05/04 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After applying PI36807 and enabling the changes it provides to
  XA processing for a given channel the following abend happened
  in the channel initiator:
  
  ABN=5C6-00940001,U=xxxxCHIN,C=R3600.710.CMC
      -CSQMCPRH,M=CSQGFRCV,LOC=CSQMCGLM.CSQMCPRH+00004886
  

Local fix

• n.a.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 5C6-00940001 occurs in CSQMCPRH   *
  *                      when an XA client connected over a      *
  *                      channel that has enabled the change     *
  *                      provided in APAR PI36807 issues XAEND   *
  *                      with the TMSUSPEND option, followed by  *
  *                      XASTART with the TMRESUME option.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During the processing of an XAEND call with the TMSUSPEND
  option, a transaction XA client that has enabled the changes
  added in PI36807 disassociates the XTE representing the
  transaction from the CCB representing the connection. When a
  subsequent XASTART call with the TMRESUME option is issued,
  CSQMXARH fails to correctly reassociate the transaction with the
  connection, leading to CSQMCPRH issuing the reported abend when
  it is unable to find the expected XTE control block.
  

Problem conclusion

• CSQMXARH is changed to correctly reassociate the transaction
  with the connection when processing an XASTART request with the
  TMRESUME option.
  100Y
  CSQMXARH
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UI37006

Modules/Macros

• CSQMXARH
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI37006

     UP16/05/05 P F605 {

Fix is available

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