PM29531: DESERIALIZATION ISSUE WITH SIP SESSIONS AFTER APPLICATION SERVER FAILOVER

APAR status

• Closed as program error.

Error description

• There is a deserialization issue after WAS failover.
  Consider a serialized attribute set on the SIP session, when the
  attribute contains a member with a reference to its parent (the
  attribute).
  
  Upon failover, the attribute is deserialized and its member
  contains a reference to a new instance of its parent.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM Websphere Application Server V7.0       *
  *                  Feature Pack for Communications Enabled     *
  *                  Applications (CEA) Session Initiation       *
  *                  Protocol (SIP) users                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: Upon failover, there is a               *
  *                      deserialization issue with attributes   *
  *                      on the SIP session that holds cyclic    *
  *                      references.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When serializing or deserializing an attribute in
  ReplicationOutputStream and ReplicationInputStream we used
  ObjectOutputStream.writeUnshared() and
  ObjectInputStream.readUnshared()
  accordingly.
  

Problem conclusion

• Added a custom property: replicate.sip.object.attribute.
  When this is set to true, ReplicationOutputStream and
  ReplicationInputStream will use
  ObjectOutputStream.writeObject() and
  ObjectInputStream.readObject()
  accordingly.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 1.0.0.11.  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

  CEA FEATUREPACK

• Fixed component ID

  5724J0855

Applicable component levels

• R700 PSY

     UP