Can not add or delete data in database on Jboss

[pingle]

I met a problem in update the database by calling a stored procedure on Jboss. The EJB bean is a stateless session bean.
By calling the stored procedure, I can get data from database, but can not update the database. If I call the stored procedure without using EJB beans, I can update the database.
Did anybody meet the similar problem? Could anyone tell me what are the possible reasons? I appreciate it.

Josh

[bartmann_d]

I think it may be the same problem as discussed in the thread http://main.jboss.org/thread.jsp?forum=46&thread=6016