Delete histroy of a table

Question

Hi Experts,
Is there any way so that i can see which user has deleted the data of my table. Actually sometime ago i had few data in emp table but now i can't see any of them. Could you please tell me how can i see the user who has deleted the data.
Regards
Rajat

Answer 1

You can write a after delete trigger on the table, to store the data of table along with user who has deleted ,terminal,IP address etc.
eg:-
create or replace trigger trg_emp_del
after delete on emp for each row
declare
cursor c1 is
select sys_context('USERENV', 'OS_USER') osuser,
sys_context('USERENV', 'IP_ADDRESS') ip_addr,
sys_context('USERENV', 'TERMINAL') terminal,
to_char(sysdate, 'DD-MM-RR hh24:mi:ss') logon_time
from dual;
v_osuser varchar2(30);
v_ip_addr varchar2(64);
v_terminal varchar2(30);
v_logon_time varchar2(20);
m_mode varchar2(10);
begin
if deleting then
m_mode := 'DELETE';
end if;
open c1;
fetch c1 into
v_osuser , v_ip_addr ,v_terminal , v_logon_time ;
close c1;
insert into emp_del_history
values
( :old.emp_code , :old.emp_name , ..../*put desired columns for keeping in history */, sysdate , m_mode , v_osuser ,
v_ip_addr , v_terminal , v_logon_time );
end;