How to invoke Oracle stored procedures in Web Intelligence Custom SQL ?

Question

Hi,
Referring to some older posts, I see that there is a work around to invoke a stored procedure to return results for a Web Intelligence report. Its been posted for calling a MS SQL stored proc, whereas the mentioned method does not seem to work for an Oracle Stored Procedure.
Steps I followed:
a) This is the parameter I have added in the oracle.sbo file => <Parameter Name="Force SQLExecute">Procedures</Parameter>
b) My stored procedure code is as follows:
CREATE OR REPLACE PROCEDURE get_emp_details(var_first_name OUT VARCHAR) AS
BEGIN
SELECT first_name INTO var_first_name
FROM EMP_DETAILS_VIEW
WHERE EMPLOYEE_ID = 100;
END;
c) Custom SQL code I added in my Webi report:
set nocount on;
/* SELECT
EMP_DETAILS_VIEW.FIRST_NAME
FROM
EMP_DETAILS_VIEW
exec get_emp_details;
On trying to validate the SQL it gives me the following error message: "The SQL query has 0 instead of 1 columns.(WIS 10810)"
Has anyone been able to successfully call an Oracle Stored procedure using the above method ?
Version of BO: XI R3 SP2
Oracle version: 11gR2
PS: I am aware that web intelligence since XI R3.1 does allow use of a dedicated Stored Procedure Universe. I would want to know if it could
be made to run in a normal Universe(not a stored procedure Universe)
Thanks for your time and inputs.
Regards,
Jez

Answer 1

EXECUTE is a SQL Plus command. You can directly call SP in PL/SQL
DECLARE
    modif number;
BEGIN
select data_length into modif from user_tab_columns where table_name='CONTROL' and column_name='POSITION';
IF modif < 10 THEN
    droptable('CONTROL');
    execute immediate('CRETAE TABLE CONTROL ....';
...