How to trap No_Data_Found error?

Question

I know how to trap this error in a back-end script:
BEGIN
select empno
into v_empno
where empno = 9999999; --no such employee
EXCEPTION
WHEN NO_DATA_FOUND THEN
However when I use this approach within a trigger in Form 10g, it fails me. I've experimented with DBMS_ERROR_CODE, but so far got nowhere. Can same approach be used in Forms as I'm using above? If not, how should I approach it?
Thanks a lot!

Answer 1

You should write something like this......
declare
  v_empno emp.empno%type;
  begin
      begin
          select empno into v_empno
                   from emp
                   where empno=99999;
          exception
               when no_data_found
                  then
                      message('no employee found');
      end;
      <any other code >
  end;Greetings...
Sim