PM79498: CLASSNOTFOUNDEXCEPTION OCCURS IN BLUEPRINT CONTAINER APPLICATION CODE

8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• ClassNotFoundException occurs in application code running in a
  Blueprint container.  The ClassNotFoundException happens
  during or shortly after a restart of the application and
  persists until the application is restarted.  The class not
  found will be contained in or imported by the Blueprint
  application's bundle.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server OSGi Applications                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: ClassNotFoundException in application   *
  *                      code running in Blueprint container.    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If a bundle is already started by the time a BundleTracker
  is registered, a null event is driven to that BundleTracker.
  The Blueprint Activator BundlerTracker was failing to handle
  these null events which could occur for key bundles under
  unusual timing conditions.
  As a result, the Blueprint container failed to be setup
  correctly for some application bundles and as a result the
  context classloader would fail to be set on the thread
  entering the Blueprint container.  ClassNotFoundExceptions
  would therefore ensue.
  

Problem conclusion

• This APAR resolves the problem by ensuring the null events are
  handled correctly and avoids the possibility of unusual timing
  conditions preventing the correct setup of the Blueprint
  containers in this way.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.0.0.7 and the fix pack following 8.5.0.2.  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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R800 PSY

     UP

• R850 PSY

     UP