PI73657: WMQ: AN INDOUBT XA UOW CAN BE INCORRECTLY COMMITTED DURING SVRCONN CHANNEL DISCONNECTION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An indoubt XA UOW can be incorrectly committed during svrconn
  channel disconnection.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: When a SVRCONN is being stopped after   *
  *                      XA work has been performed using it,    *
  *                      during the disconnect processing,       *
  *                      messages may be incorrectly committed   *
  *                      to the queue.                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an XA client has previously prepared an XA transaction
  branch, and issues a XA_CLOSE and disconnects, MQ incorrectly
  identifies the state of the transaction state. This leads to MQ
  incorrectly committing the MQ work associated with the XA
  transaction branch during the disconnect processing.
  

Problem conclusion

• Processing in this scenario has been corrected, to correctly
  identify the state of the XA transaction branch during
  disconnect processing, to ensure the MQ work under the XA branch
  is not incorrectly committed.
  000Y
  CMQXRSRV
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

  PI70301

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

  UI43936

Modules/Macros

• CMQXRSRV
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI43936

     UP17/01/27 P F701 ¢

Fix is available

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