As suspected something strange with the class loaded and entities (POJOs) used in a web service... Stripped the openjpa jar to PersistenceCapable.class, put that into ear -> worked
-- View this message in context: http://openjpa.208410.n2.nabble.com/Build-time-enhancement-or-GlassFish-enhancement-tp6061774p6086146.html Sent from the OpenJPA Users mailing list archive at Nabble.com.