Last user login

Question

Hi all ,
I need to shutdown a few databases, but before that i need to know the users who had used it and when did they use it.
How to go about it ?
I checked and found dba_users view , but that will not give me the information of the last user login with the date.
Other option is select * from dba_audit_session;
but for that also , I am not sure if auditing is enabled or not.. Need to check on that.. Also this is my homework that i am doing for the database whose access i will get in a while.. so dont even know the version. All i know is that itys on windows machine.
any suggestion/help would be appreciated
KKuKreja

Answer 1

Hi,
If you want to check who all are accessing the database just before the shutdown you can check the v$session.
COLUMN username FORMAT A15
col osuser for a15
col module for a15
COLUMN machine FORMAT A30
col program for a20
COLUMN logon_time FORMAT A20
SELECT NVL(s.username, '(oracle)') AS username,
       s.osuser,
       s.sid,
       s.serial#,
       p.spid,
       s.status,
       s.module,
       s.terminal,
       s.machine,
       s.program,
       TO_CHAR(s.logon_Time,'DD-MON-YYYY HH24:MI:SS') AS logon_time
FROM   v$session s,
       v$process p
WHERE  s.paddr  = p.addr
and s.username not in '(oracle)'
ORDER BY s.username, s.osuser;But if you want to know who all have accessed till now, auditing is necessary.
Well, little weird, but if you are on 10g and above check the v$active_session_history where you have 'machine' column.You can get all the distinct machine names from which the connections came to the database.
Anand
Anand