"java.sql.SQLException: Ref cursor is invalid" - Please help

Question

Hi everyone,
I'm really having problem. I'm surrently calling a PL/SQL stored procedure from Java but I'm getting the following error:
java.sql.SQLException: Ref cursor is invalid
The procedure has 2 normal IN parameters and 1 ref cursor OUT parameter. Depending upon Parameter 1 a ref cursor may or may not be initialised.
If Parameter 1 is "yes" then a ref cursor is called to retrieve some data and passed into the OUT. If Parameter 1 is set to "no" then the ref cursor is not initialised. It is here where the error is being hrown. Does anyone know why? Microsoft ADO doesn't seem to complain. Please help is needed. Thanks in advance.
John

Answer 1

Hi Justin,
Thanks for replying. The Java code is a bit awkward to send because we're using several "home-made" wrapper objects to call SQL and stored procedures. In both cases I create a resultset object and only this one object is used irrespective if the first parameter is "yes" or "no", but a ref cursor is passed to the OUT parameter only on condition yes. Hence, the PL/SQL code takes the form similar to:
OPEN curs FOR SELECT * FROM table;
The "curs" is then put into the OUT of the procedure. When the parameter is "no" then the "curs" ref cursor in the PL/SQL procedure isn't even initialised like the above. At this point Java complains of an invalid ref cursor. I can try and piece togather the code but it may be very tricky.
John