Error when creating a trigger

I try to create a trigger on a table named ACTION. But when I try to create an error message tells me that the trigger is created with compilation errors.

Here is the code to create the trigger :

DROP TRIGGER E_ACTION ; CREATE TRIGGER E_ACTION
  AFTER INSERT OR UPDATE ON Staff.ACTION   FOR EACH ROW
  BEGIN
  END ;
/

Thank for your help Received on Wed Oct 20 1999 - 07:51:22 CDT