Starting in the 12c (12.1.1) release of WebLogic Server
Oracle TopLink is the default JPA and JAXB provider.
The TopLink versions that are listed are the minimum
required for the listed application server versions. Oracle recommends
you always install the latest patch set. Patch sets are available from
As of WebLogic 9.0 Oracle TopLink no longer supports EJB
2.1 CMP. We recommend migrating to a TopLink JPA architetcure to
continue leveraging the benefits of TopLink within WebLogic.