Newbie: If else, never enters the else clause

Hi,

When the event is not found, I want to log this in the else clause, it never does (I have checked the v$sessions_Wait and the event is not present):

Regards

S

   begin

   for rec in (select sid from v$session_wait where event = 'SQL*Net break/reset to client')

   loop

   if rec.sid is not null then

   begin

   select l1.sid, l2.sid 

   into var_sid2, var_sid3

   from v$lock l1, v$lock l2

   where l1.block =1 and l2.request > 0

   and l1.id1=l2.id1

   and l1.id2=l2.id2;

   exception when NO_DATA_FOUND then