PI48547: UNDER STRESS INTELLIGENT MANAGMENT SENDS OUT OF ORDER MESSAGES WHICH CAUSES THE PLUGIN TO CRASH

8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
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

• In a large scale Liberty profile collective environment with
  rapid starting and stopping of large numbers of Liberty profile
  servers, out of order messages cause the plugin to crash.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Liberty Profile Intelligent          *
  *                  Management (IM) routing function.           *
  ****************************************************************
  * PROBLEM DESCRIPTION: Under stress the Intelligent            *
  *                      Managment service sends out of order    *
  *                      messages which causes the IBM           *
  *                      WebSphere Http Plugin to crash.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When large numbers of Liberty profile collective servers
  simultaneously start and/or stop, the Intelligent Managment
  service may send out of order messages which will crash the
  IBM WebSphere Http Plugin.
  

Problem conclusion

• A program change has been made to tolerate these out of order
  messages.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.8.  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

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