ORA-04062 error when running forms with different users

Question

ORA-04062 error when running forms with different users
I have a form that has a block that should display some data from another users tables. (The other user's name is dynamic, it's selected from a list box)
I wrote a stored procedure to get the data from other user's tables.
When I compile the form and run it with the same user I compiled, it works without any error. But when I run the compiled form with another user I get the ORA-04062 (signature of procedure has been changed) error.
I tried setting REMOTE_DEPENDENCIES_MODE to SIGNATURE in init.ora but it didn't help.
My Forms version is 6i with Patch 15.
Database version is 9.
Here is my stored procedure:
TYPE Scenario_Tab IS TABLE OF NUMBER(34) INDEX BY BINARY INTEGER;
TYPE Open_Curs IS REF CURSOR;
PROCEDURE Get_Scenarios(User_Name IN VARCHAR2, Scen_Table OUT Scenario_Tab) IS
Curs Open_Curs;
i NUMBER;
BEGIN
OPEN Curs FOR
'SELECT Seq_No FROM '|| User_Name ||'.scenario';
i := 1;
LOOP
FETCH Curs INTO Scen_Table(i);
EXIT WHEN Curs%NOTFOUND;
i := i + 1;
END LOOP;
END Get_Senarios;
I would be happy to solve this problem. It's really important.
Maybe somebody can tell me another way to do what I want to do. (getting a list of values from another users tables)

Answer 1

I think it should be a better solution to create a package,
and put your own TYPES and procedure into it.
CREATE OR REPLACE PACKAGE PKG_XXX IS
TYPE TYP_TAB_CHAR IS TABLE OF .... ;
PROCEDURE P_XX ( Var1 IN VARCHAR2, var2 IN OUT TYP_TAB_CHAR );
END ;
Then in your Form :
Declare
var PKG_XXX.TYP_TAB_CHAR ;
Begin
PKG_XXX.P_XX( 'user_name', var ) ;
End ;