Error while creating trigger

Question

Hai All
I have table called Daily_attendance
I need to track the changes made in the table..
I have written a trigger
create or replace trigger dail_attendance
after delete or insert or update on Daiyl_attendance
for each row
begin
insert into audit_dail_att_table(user_name,timestamp,emplcode,old_timein,new_timein,old_timeout,new_timeout,old_attend_date,old_attn_status,old_deptcode)values
(user,sysdate,:old.emplcode,:old.timein,:new.timein,:old.timeout,:new.timeout,:old.attend_Date,:old.attn_status,:old.deptcode);
end;
show err;
And i got the error
Warning: Trigger created with compilation errors.
Errors for TRIGGER DAIL_ATTENDANCE
Thanks In Advance
Srikkanth.M

Answer 1

Hi Srikkanth,
As karthik has pointed out you should decide on what needs to be captured in the audit tables...
just to give a heads up...
usually the audit tables contain all the info of main table + the audit_timestamp(when the change was made), the user who made the change and the operation(if it is delete/insert/update)..this can be obtained in the trigger using:
If inserting...
set operation = 'I'
elsif updating
set operation ='U'
else
set operation = 'D'
end if;
hope this gives you an idea...
also now there are other methods of auditing like fine grain auditing and Change Data Capture, CDC is a good set up for auditing as far as i know...u should think of what is best for your application...
Edited by: Roy Mathew on May 27, 2010 3:51 AM