PM80440: OPENJPA IS UNABLE TO LOAD CUSTOM SEQUENCEGENERATORS IN THE JEE ENVIRONMENT

8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2

APAR status

• Closed as program error.

Error description

• OpenJPA tries to use the ClassLoader responsible for loading
  the OpenJPA classes to load the specified custom
  SequenceGenerator class.  This is not going to work for
  application-custom sequence generators because those live in the
  Application ClassLoader, which is a child of the OSGI
  ClassLoader where the OpenJPA classes live in.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  Liberty Profile                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: OpenJPA throws a ClassNotFoundException *
  *                      when attempting to use an application   *
  *                      custom @SequenceGenerator               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem occurs because OpenJPA attempts to use the same
  ClassLoader to load the custom sequence generator class type
  that WebSphere Application Server uses to load the OpenJPA
  classes. Because this is a higher level ClassLoader then the
  Application ClassLoader, custom application sequence generator
  classes are unavailable.
  

Problem conclusion

• OpenJPA will now fall back to leveraging the Thread Context
  ClassLoader to load the application customer sequence generator
  classes.
  
  The fix for this APAR is currently targeted for inclusion in fix
  pack 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:

  PM69377

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

Fix information

• Fixed component name

  LIBERTY PROFILE

• Fixed component ID

  5724J0814

Applicable component levels

• R850 PSY

     UP