List of users who logged into database

Question

Hi All.
I want to know the list of users who logged in to database and the list of users for whom the password authentication is failed.
I think we can get the logged in users information from v$session but i am trying to find the users list who failed to log in to the database with password authentication failure.
Please help me...
Thanks & Regards,
Rajesh Amathi

Answer 1

Hi,
I suggest use trigger on system logon event. This is for general situation.
Ex:
create table user_log
user_id varchar2(30),
session_id number(8),
host varchar2(30),
last_program varchar2(48),
last_action varchar2(32),
last_module varchar2(32),
logon_day date,
logon_time varchar2(10),
logoff_day date,
logoff_time varchar2(10),
elapsed_minutes number(8)
create or replace trigger logon_audit_trigger
AFTER LOGON ON DATABASE
BEGIN
insert into user_log values(
user,
sys_context('USERENV','SESSIONID'),
sys_context('USERENV','HOST'),
null,
null,
null,
sysdate,
to_char(sysdate, 'hh24:mi:ss'),
null,
null,
null
END;
For unsuccessful logons:
CREATE TABLE connection_audit (login_date DATE, user_name VARCHAR2(30));
-- trigger to trap unsuccessful logons
CREATE OR REPLACE TRIGGER logon_failures
AFTER SERVERERROR
ON DATABASE
BEGIN
IF (IS_SERVERERROR(1017)) THEN
INSERT INTO connection_audit (login_date, user_name) VALUES(SYSDATE, 'ORA-1017');
END IF;
END logon_failures;
Please refer for more several combination: http://psoug.org/reference/system_trigger.html
Edited by: Ulfet Tanriverdiyev on Jul 7, 2010 10:49 PM