title: Oracle Error ORA-04093, unable reference long data type
body: <p>I am trying to create a trigger on addcomments table, which contains a long coloumn</p>
  
  <pre><code>CREATE OR REPLACE TRIGGER careventCommentssysc
  AFTER INSERT 
  ON addcomments
  FOR EACH ROW
  DECLARE
  BEGIN
          cargetcomments(:NEW.addcode, :NEW.addcomment,  'INSERTING');
  END careventCommentssysc;
  </code></pre>
  
  <p>when i try to compile this i am getting following error.</p>
  
  <pre><code>ORA-04093, references to column of type LONG are not allowed in triggers.
  </code></pre>
  
  <p>But i cant change the table column type to other than long.</p>
  
  <p>Please help me if anyone handled this problem earlier.</p>