PI93374: SESSION AFFINITY CAN BE BROKEN AND RESULT IN ERRONEOUS 503S

9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11

APAR status

• Closed as program error.

Error description

• Session Affinity can be broken and result in erroneous 503s
  when multiple editions of a single application are
  simultaneously active.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server WAS ND edition (Virtual              *
  *                  Enterprise/IM Component) that leverage the  *
  *                  On-Demand Router.                           *
  ****************************************************************
  * PROBLEM DESCRIPTION: Session affinity is broken when         *
  *                      multiple editions of a single           *
  *                      application are simultaneously active.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When routing affinity requests through the On-Demand Router
  (ODR) in environment with multiple editions of a single
  application simultaneously active session affinity is lost
  resulting in 503 http status codes.
  

Problem conclusion

• The On-Demand Router (ODR) logic has been corrected to properly
  maintain affinity when multiple editions of the same application
  are present and active.
  
  The fix for this APAR is currently targeted for inclusion in fix
  packs 8.5.5.14 and 9.0.0.8.  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

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R850 PSY

     UP