title: Trigger problem, it compiles fine, but when i try to update data it does not triggerr the text message
body: <p>Im creating this trigger and it there is no errors.</p>
  <pre><code>CREATE OR REPLACE TRIGGER InformacjaAkcji
  after insert or update or delete on Zegarek
  begin
  if inserting then
  dbms_output.put_line('Pomyślnie wprowadzono dane ');
  end if;
  if updating then
  dbms_output.put_line('Pomyślnie zaktualizowano dane ');
  end if;
  if deleting then
  dbms_output.put_line('Pomyślnie usunięto dane ');
  end if; 
  end;
  </code></pre>
  <p>Then when i want to trigger it and check if it work i enter this :</p>
  <pre><code> Update Zegarek
   Set Cena = 3499 Where NumerSeryjny = 'QT451264CT'
  </code></pre>
  <p>And again it says The row is updated sucessfull, but i dont see the text prompt that should be triggerd by :</p>
  <pre><code>if updating then
  dbms_output.put_line('Pomyślnie zaktualizowano dane ');
  end if;
  </code></pre>
  <p>Where is the problem?, thank you for help.</p>