title: how to run pl/sql program in oracle sql developer
body: <pre><code>DECLARE
     message  varchar2(20):= 'Hello, World!';
  BEGIN
     dbms_output.put_line(message);
  END;
  </code></pre>
  
  <p>How can I execute above pl/sql program in Oracle SQL Developer.
  Can any one suggest me?</p>