Ok, so if I understand your previous email... When you were using the -javaagent enhancer, everything works properly? When you use the eclipse plugin, you get an exception about an unrecognized Entity name? Can I have you upload your enhanced Entity .class file? I suspect this may be related to OPENJPA-1879[1]. [1] https://issues.apache.org/jira/browse/OPENJPA-1879 Thanks, Rick