PM04328: STACKOVERFLOWERROR IN THE SIP CONTAINER.

APAR status

• Closed as program error.

Error description

• Running an internal test with short period of time with limited
  connections resulted in StackOverflowError.
  
  Exceptions:
  
  [9/21/09 13:44:52:328 EDT] 00000056 SipTimerTask  E SipTimerTask
  java.lang.StackOverflowError
  at java.text.MessageFormat.format(MessageFormat.java:822)
  at com.ibm.ejs.ras.TraceNLS.worker(TraceNLS.java:593)
  at
  com.ibm.ejs.ras.TraceNLS.getStringFromBundle(TraceNLS.java:409)
  ...
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  SIP (Session Initiation Protocol) users     *
  *                  of IBM WebSphere Application Server V7.0.   *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The SIP container throws a              *
  *                      StackOverflowError under load when a    *
  *                      TCP or TLS connection breaks.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem happens under load, when the application is
  sending out a large number of SIP messages over TCP or TLS,
  and the connection gets broken. There is a bug in the code
  that handles the connection error, which causes a
  StackOverflowError, if there are a large number of messages
  queued for delivery.
  

Problem conclusion

• The problem is fixed in the SIP container code. With this fix,
  the container recovers from this situation without throwing an
  exception.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 7.0.0.11.  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:

  PK98562

• 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