Row level trigger updating the entire table instead of affected rows

Question

I am using orace 8.1.7. My problem is I have a row level trigger that should fire only once ( and insert a row in my auditing table). But it is doing it for the entire table. This only happens when I have more than two columns in an Update clause. Has anyone run into this problem before. Any help would be highly appreciated.
thanks,
dinesh

Answer 1

create or replace trigger contact_audit
before update or delete on contact
for each row
declare
v_audit_type char(1);
v_audit_item varchar2(64) := 'CONTACT';
v_acct_seqid number;
Begin
if inserting then
     v_audit_type := 'I';
elsif updating then
v_audit_type := 'U';
elsif deleting then
v_audit_type := 'D';
end if;
select acct_seqid into v_acct_seqid
from account_contact
where email = :old.contact_email;
insert into audit_event ( id, audit_item, audit_type, audit_date, acct_seqid, col_1, col_2, col_3, col_4, col_5, col_6, col_7, col_8,
col_9, col_10, col_11, col_12, col_13, col_14, col_15, col_16, col_17, col_18, col_19, col_20)
values (audit_event_sq.nextval, v_audit_item, v_audit_type, sysdate, v_acct_seqid, :old.contact_email, :old.contact_type, :old.contact_last, :old.contact_first,
:old.title, :old.address1, :old.address2, :old.address3, :old.city, :old.state, :old.zip_code5, :old.zip_code4, :old.zip_code_barcode, :old.country, :old.phone_no,
:old.phone_ext, :old.receive_info_email_yn, :old.pwd_encrypted, :old.pwd_question, :old.pwd_answer);
End;