Executing stored function using Native SQL

Question

In SAP documentation, I can see how to execute an Oracle stored procedure in an external database using:
EXEC SQL.
  EXECUTE PROCEDURE procname
ENDEXEC.
I want to execute a stored FUNCTION within a package.  I have tried executing it using the syntax for PROCEDURE above and get a "ORA-06550 wrong type or number of arguments" error.  Since the function has one argument in and one argument out, I think I am counting the number of arguments correctly.  Has anyone executed from within ABAP an Oracle function stored in an external database?
Thanks
Janice Ishee

Answer 1

Janice - from help.sap.com:
Stored Procedures
The command EXECUTE PROCEDURE proc allows you to call a procedure stored in the database. When you call it, you can pass a list of host variables as parameters. When yuo call a procedure, you must specify for each parameter whether it is an input parameter ( IN), output parameter (OUT) or changing parameter (INOUT).
Example
Calling a Procedure:
DATA Y TYPE I VALUE 300.
DATA Z TYPE I.
EXEC SQL.
INSERT INTO AVERI_CLNT (CLIENT, ARG1, ARG2, ARG3)
VALUES ('000', 9, 2, 47)
ENDEXEC.
EXEC SQL.
CREATE OR REPLACE PROCEDURE PROC1 (X IN NUMBER) IS
BEGIN
UPDATE AVERI_CLNT SET ARG3 = ARG3 + X;
END;
ENDEXEC.
EXEC SQL.
CREATE OR REPLACE PROCEDURE PROC2 (X IN NUMBER, Y OUT NUMBER) IS
BEGIN
SELECT ARG3 INTO Y
FROM AVERI_CLNT
WHERE CLIENT = '000' AND ARG1 = 9 AND ARG2 = 2;
UPDATE AVERI_CLNT SET ARG3 = ARG3 - X;
END;
ENDEXEC.
EXEC SQL.
EXECUTE PROCEDURE PROC1 ( IN :Y )
ENDEXEC.
EXEC SQL.
EXECUTE PROCEDURE PROC2 ( IN :Y, OUT :Z )
ENDEXEC.
IF SY-SUBRC <> 0 OR Z <> 347.
WRITE: / 'Wrong result for EXECUTE PROCEDURE:', Z.
ENDIF.
EXEC SQL.
DROP PROCEDURE PROC1
ENDEXEC.
EXEC SQL.
DROP PROCEDURE PROC2
ENDEXEC.
Rob