JPA Glassfish Database Update Issue

Question

I have an application deployed on Glassfish v3.0.1 which reads events from a table in my database. Once ready it marks them as processed. I am getting a strange error I can\

Answer 1

This exception can also occur, if you try to copy and paste EJB session beans with new methods, as patch files for fixing bugs or incorporating new features. Restarting the server or disabling & enabling the enterprise app will not help, as the EJB Session beans or entities have to be repackaged and redeployed, so that the App server registers the new methods and checks and grants/excludes the access privileges to the new/altered methods in EJB session beans.