Log user’s login and logout details in to table through Oracle Forms using POST-LOGON and PRE-LOGOUT triggers to track the user’s login and logout activity for auditing purposes.

In this example one table and a sequence object is used to log the data in to table called login_out and the login information would be logged through Post-Logon trigger and logout information would be logged through Pre-Logout trigger in Oracle Forms. Follow the below mentioned steps to perform this task.

1. Create a Sequence object in Oracle Database.

CREATE SEQUENCE login_seq

   START WITH 1

   INCREMENT BY 1

   NOCACHE
/

2. Create a Table in Oracle Database.

CREATE TABLE login_out

(

   srlno     NUMBER (10) PRIMARY KEY,

   loguser   VARCHAR2 (20 BYTE),

   indate    DATE,

   outdate   DATE

)
/

3. Create a Post-Logon Trigger at Form Level in Main Form of Your Application.

DECLARE

   v_seq    NUMBER (10);

   v_user   VARCHAR2 (20) := GET_APPLICATION_PROPERTY (username);

BEGIN

   SELECT login_seq.NEXTVAL INTO v_seq FROM DUAL;

   /* this global variable is created to use on pre-logout trigger to update the correspondent record. */

   :Global.login_seq := v_seq;

   INSERT INTO login_out (srlno, loguser, indate)

       VALUES (v_seq, v_user, SYSDATE);

   COMMIT;

EXCEPTION

   WHEN OTHERS

   THEN

      RAISE form_trigger_failure;

END;

4. Create a Pre-Logout Trigger at Form Level in Main Form of Your Application.

DECLARE

   v_seq    NUMBER (10) := :GLOBAL.login_seq;

BEGIN

   Update login_out

      set outdate = SYSDATE

      where srlno = v_seq;

— No need to commit here it will do automatically

EXCEPTION

   WHEN OTHERS

   THEN

      RAISE form_trigger_failure;

END;

Now run the form and after that you can check the login_out table to view the data as following:

SELECT *

  FROM login_out

 WHERE TRUNC (indate) = TRUNC (SYSDATE)

 /
Note: These triggers should added into Main Form only of your application, not in every form.