I provide more information for your help.
Addtional information :
JBoss 2.4.3My EJB startup is clear ( no error ).
Database : postgresql 7.1.3
Finally, I solve the problem. That is my misstake, i had a interface declared as private variable in the my concreteClass (inhert from AbstractClass)... now i declare as transient, let the interface variable don't to be serialize.
Now everything fine...:-) thanks for help anyway.
But just wonder why it don't throw any exception ???
Can you show me a sample JSP -> EJB -> Oracle DB source code.
The EJB by fire stored procedure to the database.