PI73712: 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 IBM MQ for z/OS Version 9 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.
  

Temporary fix

Comments

APAR Information

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

  PI70301

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

  UI44606

Modules/Macros

• CMQXRSRV none
  

Fix information

• Fixed component name

  MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R000 PSY UI44606

     UP17/04/04 P F703

Fix is available

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