plsql « Stored Procedure « JPA Q&A

1. Throwing specific error messages in PLSQL Oracle...catching in hibernate?

Is it possible to throw a specific error message in a PL/SQL oracle stored procedure and catch it in Hibernate when it gets invoked?

2. In which scenarios JPA becomes interesting/useful?

I'm developing a JEE application (JSF + Richfaces + Oracle 10g), and i wanted to use JPA. But in the end, i didn't see any advantages of using it, because it's going ...

3. Calling Pl/SQl stored procedure