Rick, Thanks for the reply. Yes, we did add all the mapping files to persistence.xml (including the one containing the mapped super class).
One of our application's requirement is to be able to query the physical field name of an attribute of the entity. We find that we were not able to get the meta for the mapped super class in JBoss without also adding in the persistence.xml the following line. *<class>a.b.c.OurMappedSuperclassName</class>* Regards, Rohit -- View this message in context: http://openjpa.208410.n2.nabble.com/XML-ORM-Mappings-where-to-define-common-Mapped-Super-Class-tp7584090p7584143.html Sent from the OpenJPA Users mailing list archive at Nabble.com.