I need execute an sql query in ORACLE it takes a certain amount of time.

so i wrote this function

CREATE OR REPLACE FUNCTION MYSCHEMA.TEST_SLEEP
(
TIME_  IN  NUMBER
)
RETURN INTEGER IS
 BEGIN
   DBMS_LOCK.sleep(seconds => TIME_);
RETURN 1;
 EXCEPTION
   WHEN OTHERS THEN
   RAISE;
   RETURN 1;
END TEST_SLEEP;

and i call in this way

SELECT TEST_SLEEP(10.5) FROM DUAL

but to work i need set grant of DBMS_LOCK to the owner of the procedure.

how i can rewrite this function without using the DBMS_LOCK.sleep function?

Thanks in advance.