Oracle: check the existence of logon/logoff triggers

admin — Tue, 19 Jan 2010 14:10:44 +0000

SELECT
DECODE((COUNT(trigger_name)),0,'LOGON trigger missing',
'Number of logon triggers: ' || COUNT(trigger_name) ) "INFO"
FROM sys.dba_triggers
WHERE
TRIGGERING_EVENT LIKE 'LOGON%'
AND status='ENABLED'
AND owner='SYS'
UNION
SELECT
DECODE((COUNT(trigger_name)),0,'LOGOFF trigger missing','',
'Number of logoff triggers:' || COUNT(trigger_name)) "INFO"
FROM sys.dba_triggers
WHERE
TRIGGERING_EVENT LIKE 'LOGOFF%'
AND status='ENABLED'
AND owner='SYS'

The field TRIGGERING_EVENT could have the spaces at the end! Very clever…

Oracle: logon trigger

admin — Thu, 24 Sep 2009 14:09:39 +0000

Create the table to save logon information:

CREATE TABLE logonaudittable (
event VARCHAR2(10),
sid NUMBER,
serial# NUMBER,
TIMESTAMP DATE,
username VARCHAR2(30),
osuserid VARCHAR2(30),
machinename VARCHAR2(64)
);

Trigger for logons:

CREATE OR REPLACE TRIGGER logon_trg
AFTER LOGON ON DATABASE
DECLARE machinename VARCHAR2(64);
osuserid VARCHAR2(30);
v_sid NUMBER(10);
v_serial NUMBER(10);
CURSOR c1 IS
SELECT sid, serial#, osuser, machine FROM v$session v
WHERE v.sid = (SELECT sid FROM gv$mystat WHERE ROWNUM = 1 ) ;
BEGIN
OPEN c1;
FETCH c1 INTO v_sid, v_serial, osuserid, machinename;
INSERT INTO logonaudittable VALUES ( 'LOGON',
v_sid, v_serial,
SYSDATE, USER, osuserid, machinename );
CLOSE c1;
END;

Trigger for logoffs:

CREATE OR REPLACE TRIGGER logoff_trg
BEFORE LOGOFF ON DATABASE
DECLARE machinename VARCHAR2(64);
osuserid VARCHAR2(30);
v_sid NUMBER(10);
v_serial NUMBER(10);
CURSOR c1 IS
SELECT sid, serial#, osuser, machine FROM v$session v
WHERE v.sid = (SELECT sid FROM gv$mystat WHERE ROWNUM = 1 ) ;
BEGIN
OPEN c1;
FETCH c1 INTO v_sid, v_serial, osuserid, machinename;
INSERT INTO logonaudittable VALUES ( 'LOGOFF', v_sid, v_serial, SYSDATE, USER, osuserid, machinename );
CLOSE c1;
END;

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Oracle: check the existence of logon/logoff triggers

Oracle: logon trigger