Unknown entity bean class after hot deploy: netbeans 6.9 + glassfish 2.1 + eclipselink jpa 2.0

Question

When I deploy my app, it works perfectly until I make a change, save, and netbeans hot deploys the application. At this point I get an unknown entity bean class error on a c

Answer 1

The issue is the old persistence unit with references to the old classes is remaining after your redeploy. Ensure the old EntityManagerFactory is getting closed. Glassfish should handle this for any managed factories such as in a SessionBean, but if you are managing your own factories you need to ensure these are closed.