This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Hi everyone. I have an entity "message" with fields emp_id, local_user_id, message_date, message_header, message_id. I want to save it to a table "message" with corresponding columns. But after em.persist(message) I got this exception: