PH35414: BEAN VALIDATION LEAKING APPLICATION CLASS LOADERS

APAR status

• Closed as program error.

Error description

• When repeatedly install and uninstall the application,
  OutOfMemoryError occurs.
  Bean Validation leaks the application
  class loader every time the application is stopped.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server utilizing Bean Validation in         *
  *                  applications.                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Repeatedly starting and stopping        *
  *                      applications that utilized bean         *
  *                      validation results in an out of         *
  *                      memory JVM error.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Bean Validation applications might leak their application
  class loader when the application is stopped. This can lead to
  out of memory errors when applications are repeatedly
  stopped/started. The leaked application class loaders will
  show, "METHOD_BY_NAME_AND_CLASS class
  org.apache.bval.jsr.ConstraintAnnotationAttributes", towards
  the top of the tree when analyzing heap dumps.
  

Problem conclusion

• The WebSphere bean validation code has been updated to clear
  cached constraint annotation data when applications are
  stopped. This removes the references to the application class
  loader that was preventing the application class loader from
  being garbage collected.
  
  The fix for this APAR is targeted for inclusion in fix pack
  9.0.5.9. For more information, see 'Recommended Updates for
  WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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 APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R900 PSY

     UP