ALTER SESSION SET plsql_warnings = 'enable:all' 

CREATE OR REPLACE PROCEDURE plw6007 
   AUTHID DEFINER 
AS 
   l_var   NUMBER; 
 
   PROCEDURE not_used 
   IS 
   BEGIN 
      NULL; 
   END not_used; 
BEGIN 
   DBMS_OUTPUT.put_line (l_var); 
END plw6007; 

CREATE OR REPLACE PACKAGE pkg_plw6007 
   AUTHID DEFINER 
AS 
   PROCEDURE here_we_go; 
END; 

CREATE OR REPLACE PACKAGE BODY pkg_plw6007 
AS 
   PROCEDURE here_we_dont_go 
   IS 
   BEGIN 
      DBMS_OUTPUT.put_line ('Stop!'); 
   END; 
 
   PROCEDURE here_we_go 
   IS 
   BEGIN 
      DBMS_OUTPUT.put_line ('Go!'); 
   END; 
END;