Function calling a function

Question

Hello,
If a fumction say F1 is calling an another function say F2.
If I change the definition of the function F2, then what will happen with the function F1.
(F1and F2 are stored function)
Does Oracle automatically recompile the function F1?
THANKS.

Answer 1

See this
CREATE FUNCTION F1(ARG_1 IN NUMBER) RETURN NUMBER AS
VAL NUMBER;
BEGIN
SELECT ARG_1*2 INTO VAL FROM DUAL;
RETURN ( VAL );
END;
SQL> ED
Wrote file afiedt.buf
1 CREATE OR REPLACE FUNCTION F2(ARG_1 IN NUMBER) RETURN NUMBER AS
2 VAL NUMBER;
3 BEGIN
4 SELECT F1(ARG_1) + 100 INTO VAL FROM DUAL;
5 RETURN ( VAL );
6* END;
SQL> /
Function created.
SQL> SELECT OBJECT_NAME,STATUS FROM DBA_OBJECTS WHERE OBJECT_NAME IN ('F1','F2');
OBJECT_NAME
STATUS
F1
VALID
F2
VALID
SQL> ED
Wrote file afiedt.buf
1 CREATE OR REPLACE FUNCTION F1(ARG_1 IN NUMBER) RETURN NUMBER AS
2 VAL NUMBER;
3 BEGIN
4 SELECT ARG_1*2 + 100 INTO VAL FROM DUAL;
5 RETURN ( VAL );
6* END;
7 /
Function created.
SQL> SELECT OBJECT_NAME,STATUS FROM DBA_OBJECTS WHERE OBJECT_NAME IN ('F1','F2');
OBJECT_NAME
STATUS
F1
VALID
F2
INVALID
SQL> SELECT F2(100) FROM DUAL;
F2(100)
400
SQL> SELECT OBJECT_NAME,STATUS FROM DBA_OBJECTS WHERE OBJECT_NAME IN ('F1','F2');
OBJECT_NAME
STATUS
F1
VALID
F2
VALID