PM37754: SCA MEMORY FOOTPRINT INCREASES AFTER REPEATEDLY REDEPLOYING/RESTARTING APPLICATIONS

APAR status

• Closed as program error.

Error description

• Service Component Architecture (SCA) Memory Footprint increases
  after repeatedly redeploying/restarting implementation.osgiapp
  applications using JAXB data types.
  
  
  Details: When an SCA application using implementation.osgiapp
  stops, the JAXB data types associated with that application
  are not removed from the LRUCache in the JAXBContextCache. As
  a result, the memory footprint grows and may result in an
  OutOfMemory Exception.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All IBM WebSphere Application Server Feature*
  *                  Pack for Service Component Architecture     *
  *                  (SCA) users                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Service Component Architecture (SCA)    *
  *                      memory footprint increases after        *
  *                      repeatedly restarting SCA               *
  *                      applications that include               *
  *                      implementation.osgiapp.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When an SCA application containing an implementation
  type of "implementation.osgiapp" is stopped, a cache inside of
  the JAXBContextCache is not reaped. As a result, memory usage
  can grow larger than necessary.
  

Problem conclusion

• The Feature Pack for Service Component Architecture code was
  corrected to reap the cache used by JAXBContextCache when
  the application is stopped.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 1.0.1.13. Please refer to the Recommended Updates page
  for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

• Restarting the server that the SCA application is deployed to
  will reset the cache used inside JAXBContextCache.
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  PM39182

Fix information

• Fixed component name

  WAS SCA FEATURE

• Fixed component ID

  5724J0854

Applicable component levels

• R700 PSY

     UP