If there is an existing stored procedure and you don't want it any more, you can remove it from the database by using the DROP PROCEDURE statement as shown in the following script example:

SQL> CREATE PROCEDURE Greeting AS

2 BEGIN

3 DBMS_OUTPUT.PUT_LINE('Welcome to globalguideline!');

4 END;

5 /

Procedure created.

SQL> DROP PROCEDURE Greeting;

Procedure dropped.