Log unsuccessful attemps connecting to database+Oracle error

Question

Hi,
I've a simple trigger to log all user's unsuccessful attempts to connect to a database for the oracle error:ora-1017( invalid username/password when trying to login)
CREATE TABLE connection_audit (
login_date DATE,
username VARCHAR2(30));
-- trigger to trap unsuccessful logons
CREATE OR REPLACE TRIGGER T_LOGON_FAILURES
AFTER SERVERERROR
ON DATABASE
BEGIN
IF (IS_SERVERERROR(1017)) THEN
INSERT INTO connection_audit
(login_date, username)
VALUES
(SYSDATE, 'ORA-1017');
END IF;
END T_LOGON_FAILURES;
Now, I would've to log the unsuccessful attempts due to whatever Oracle error, along with the oracle error.
Can someone help me with the code changes?
Thanks,
Bhagat

Answer 1

I've created a trigger which inserts a record into table SERVERERROR_LOG for
every server error.
CREATE OR REPLACE TRIGGER T_LOG_SERVER_ERRORS
AFTER SERVERERROR ON DATABASE
** Purpose: T_LOG_SERVER_ERRORS TRIGGER -- THE SERVERERROR TRIGGER TAKES EVERY SERVER ERROR GENERATED
** FROM ORACLE PL/SQL AND PLACES IT INTO AN ORACLE TABLE.
** BY CAPTURING THE USER ID AND THE TIME OF THE ERROR, THE ORACLE ADMINISTRATOR WOULD BE
** IMMEDIATELY BE NOTIFIED VIA E-MAIL WHENEVER A SERVER ERROR OCCURS.
DECLARE
ls_user varchar2(30);
ls_osuser varchar2(30);
ls_machine varchar2(64);
ls_process varchar2(9);
ls_program varchar2(48);
BEGIN
SELECT username,osuser,machine,process,program
INTO ls_user,ls_osuser,ls_machine,ls_process,ls_program
FROM V$SESSION
WHERE audsid=userenv('sessionid');
INSERT INTO SERVERERROR_LOG
VALUES(
dbms_standard.server_error(1),
localtimestamp,
ls_user,
ls_osuser,
ls_machine,
ls_process,
ls_program);
END;
And My procedure below queries the table and notifies the Oracle Admin by
E-mail for every server error.(P_NOTIFY_SERVER_ERR is the procedure which does the job of sending mail to Admin).
PROCEDURE P_SERVER_ERRORS
AS
** Purpose: PROCEDURE FOR CHECK FOR SERVER ERRORS .
** INVOKE THE PROCEDURE P_NOTIFY_SERVER_ERR,WHICH NOTIFIES THE ORACLE ADMIN
** EVERYTIME SERVER ERROR OCCURS.
CURSOR C_SERVERERROR_LOG
IS
SELECT * FROM SERVERERROR_LOG;
BEGIN
FOR lc_servererror_log IN c_servererror_log
LOOP
P_NOTIFY_SERVER_ERR(lc_servererror_log.error,
lc_servererror_log.error_dt_time,
lc_servererror_log.username,
lc_servererror_log.osuser,
lc_servererror_log.machine,
lc_servererror_log.process,
lc_servererror_log.program);
END LOOP;
END P_SERVER_ERRORS;
An Oracle job executes procedure P_SERVER_ERRORS once every 5 minutes.
Thanks every one for your valuable suggestion.
Cheers!!!!
Regards,
Bhagat