Ora-00001 and triggers

Question

I have a trigger that fires after tbl 1 col 9 update event.
the trigger references old as old new as new on tbl 1.
and proceeds to test old.value vs new.value
it's goal is to insert a row into tbl 2 which are values from tbl 1.
tbl 2 contains a unique constraint.
I am trying to trap the condition DUP_VAL_ON_INDEX within the trigger and "log" the key thats failing, but continue. In this case the trigger is a hidden procedure from a called procedure whos goal is to update tbl 1 col 9 with a date.
I have tryed this a number of ways.
any help would be appreciated.
tbl2 PK is a 6 part combo (julian_yr,julian_day,submit_typ,btch_num,id_num,adj_num)
CREATE OR REPLACE TRIGGER tbl2
AFTER UPDATE
ON tbl1
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
begin
if (:old.h_upld_dt is null and
:new.h_upld_dt is not null) then
if (:new.status_cd in ('EOK', 'MIS', 'DUP')) then
insert into tbl2
values (:new.julian_yr,
:new.julian_day,
:new.submit_typ,
:new.btch_num,
:new.id_num,
:new.adj_num,
sysdate, '', '', '');
end if;
end if;
EXCEPTION
WHEN DUP_VAL_ON_INDEX THEN
DBMS_OUTPUT.PUT_LINE ('tbl1 trigger into tbl2 failure: ' ||
:new.julian_day ||
:new.submit_typ ||
:new.btch_num ||
:new.id_num ||
:new.adj_num ||
sysdate);
null;
end;
/

Answer 1

there is always differnet ways to reach the goal.
I was able to return the exception dup_val_on_index from the trigger back to the initiating procedure then deal with the issue there, which seems to work well. More testing should confirm.
Thanks