Getting an error while executing the procedure from sql developer

问题

Can any one please help

create or replace PROCEDURE greetings
IS
BEGIN
   dbms_output.put_line('Hello World!');
END;

回答1:

There's no error for syntax, but if you ask for getting a result(to message with greeting) , apply serveroutput on before you execute your procedure :

SQL> set serveroutput on;

SQL> exec greetings;

Hello World!

PL/SQL procedure successfully completed.

来源：https://stackoverflow.com/questions/47180770/getting-an-error-while-executing-the-procedure-from-sql-developer