PI53857: APC HANG WHEN PLACEMENT DECISION INCLUDES ON INSTANCE STOP IN A NODE AND ONE START IN OTHER NODE OF SAME CLUSTER.

8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• The APC hangs when the placement decision includes one instance
  stop in a node and one instance start in the other node for the
  same cluster to improve the system performance.
  
  When this happens, the APC stops any placement actions and
  stops writing the log entries in the apc.log files.
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of the dynamic cluster function   *
  *                  of the IBM WebSphere Application Server     *
  ****************************************************************
  * PROBLEM DESCRIPTION: The application placement controller    *
  *                      stops working when multiple placement   *
  *                      actions occur in a cluster at the same  *
  *                      time.                                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The application placement controller stops working when
  multiple placement actions occur in a cluster at the same time.
  

Problem conclusion

• The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.9.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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

• R850 PSY

     UP