EclipseLink - Oracle存储过程调用新手问题

I'm in charge of a task which I believe should be simple, but as I never did it before I have some trouble with it. I have succesfully created an EJB 3 project using EclipseLink which will call a number of stored procedures from an Oracle database. I've configured the datasource correctly, I can connect and execute simple stored procedures and functions (without parameters and returning a cursor); however, I am currently unable to execute stored procedures with parameters. I'm in charge of a task which I believe should