Toplink 10.1.3.1 compatible with weblogic 11g server

Question

When deploying to weblogic 11g server using OEPE, I get the following error:
java.lang.VerifyError: (class: com/co/proj/toplink/TimeTrackProject, method: <init> signature: ()V) Incompatible argument to function
     at com.co.db.core.DBConnFactory.initSessionsPoolExternal(DBConnFactory.java:109)
     at com.co.db.core.DBConnFactory.initSessionsPoolExternal(DBConnFactory.java:66)
     at com.co.db.core.DBConnFactory.init(DBConnFactory.java:46)
     at com.co.db.core.DBConnInitializer.contextInitialized(DBConnInitializer.java:43)
     at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:465)
     Truncated. see log file for complete stacktrace
TimeTrackProject extends Project class in toplink-10.3 jar.
Are there compatibility issues with weblogic 11g and toplink 10.1.3.1?

Answer 1

The older TopLink versions were not certified on the latest WebLogic releases. Oracle TopLink 11g (11.1.1.0.0) was certified on WebLogic 10.3.0 and 11gR1 (11.1.1.1.0) was included with WebLogic 10.1.3.1 as a system module. You may be experiencing a conflict between the included TopLink libraries and the older ones you built your application against. I would recommend rebuilding your application against the TopLink libraries shipped with WLS 10.3.1 and not including the older version.
If this is not an option then you would need to use an application classpath filer to ensure the TopLink libraries in the system module of WLS 10.3.1 are not used.
Doug