PH50987: INCORRECT BEHAVIOR WHEN ROLLBACK TRANSACTION AFTER TIMEOUT

APAR status

• Closed as program error.

Error description

• When a transaction timeout occurs in a subordinate, an
  unnecessarily large delay can occur between the transaction
  timing out and the transaction itself being rolled back.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Subordinate transaction may not         *
  *                      rollback in a timely fashion            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When a transaction times out, the timeout thread will first
  attempt to abort connections and, if the transaction is not
  currently active on another thread, rollback resources.  It
  will then schedule a rollback of the transaction after a
  delay.  If the scheduled transaction rollback cannot complete,
  it will also be re-scheduled using the same delay.
  The delay used for scheduling the transaction rollback was the
  timeout duration of the transaction.
  For example, if the transaction timeout was 5 minutes then the
  initial attempt to rollback the transaction would only occur 5
  minutes after the transaction had timed out.
  This issue is not present on WebSphere Application Server for
  z/OS.
  

Problem conclusion

• The transaction's timout duration should not have been used by
  the timeout process for the delay when scheduling the
  transaction rollback attempts.  The delay value has been
  changed.
  
  The fix for this APAR is targeted for inclusion in fix packs
  8.5.5.26 and 9.0.5.21. 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