PM54109: Resolve multiple issues when using WebSphere eXtreme Scale session replication.

APAR status

• Closed as program error.

Error description

• Applying this fix resolves the following issues:
  
  1. When setting replicationInterval=0, LockTimeoutException
  exceptions cause browsers to hang when the web application
  handles multiple requests for the same session at the same time.
  2. When session affinity is not enabled, long browser sessions
  involving multiple requests can eventually lead to
  application servers going out of memory.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
  *                  Version 7.1.0.3 for HTTP session            *
  *                  replication                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Multiple problems are fixed,            *
  *                      including OutOfMemory and LockTimeout   *
  *                      exceptions on the application server.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This fix addresses multiple problems users might encounter
  while
  running HTTP session replication scenarios using eXtreme Scale:
  1. If session affinity is lost, application server JVMs can go
  out of memory.
  2. LockTimeoutException exceptions occur when
  replicationInterval=0 and multiple requests are serviced for
  the same session at the same time.
  

Problem conclusion

• The code has been updated to address these issues.
  

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R711 PSY

     UP