PH53972: SERVICEABILITY ENHANCEMENT FOR DIAGNOSING XA PROTOCOL VIOLATIONS IN SCENARIOS WHERE RESOURCE MANAGERS ARE NOT

APAR status

• Closed as program error.

Error description

• Additional serviceability was required to aid diagnosis and
  provide evidence to third party XA Resource Managers in the
  event that the XA Resource Manager violated the XA
  specification.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Transaction branches in an XA           *
  *                      Resource Manager left indoubt after     *
  *                      it responds to XA protocol request      *
  *                      with XAER_RMERR                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  In complex scenarios, for example involving backend database
  failover, it was found that some XA Resource Managers violated
  the XA Specification.  Additional serviceabiliy function was
  found to be useful in providing evidence to the third party
  and expediting resolution of the issue in third party products.
  

Problem conclusion

• Serviceability was added to improve problem diagnosis and
  provide enhanced evidence to third party XA Resource Managers
  in the event that they violated the XA Specification by
  throwing XAExceptions with errorCode XAER_RMERR in scenarios
  where the actual state of the transaction branch in
  the Resource Manager and the semantics of that errorCode
  violated the XA Specification.
  
  The fix for this APAR is targeted for inclusion in fix packs
  8.5.5.25 and 9.0.5.17. For more information, see 'Recommended
  Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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:

Fix information

• Fixed component name

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels