Trigger giving no output

Question

hiii everybody,
i executed the trigger shown below on my system's local database ,but trigger is showing no output,where i m wrong ?any HELP HIGHLY APPRECIATED,thanks and trigger is shown below.
SQL> sho user;
USER is "SYS"
SQL> CREATE TABLE logonaudit
2 (
3 user_id VARCHAR2(30),
4 sess_id NUMBER(10),
5 logon_time DATE,
6 logoff_time DATE,
7 host VARCHAR2(20));
Table created.
SQL> CREATE OR REPLACE
2 TRIGGER logon_audit
3 AFTER LOGON
4 ON DATABASE
5 DECLARE
6 V_program varchar2(120);
7 BEGIN
8 SELECT UPPER(program)
9 INTO v_program
10 FROM v$session
11 WHERE audsid = sys_context('USERENV','SESSIONID');
12 if upper(v_program) in ('TOAD','SQLPLUS')
13 then
14 INSERT
15 INTO logonaudit
16 VALUES(
17 user,
18 sys_context('userenv','sessionid'),
19 sysdate,
20 null,
21 sys_context('userenv','host')
22 );
23 end if;
24 END;
25 /
Trigger created.
SQL> conn scott/tiger;
Connected.
SQL> conn /as sysdba
Connected.
SQL> select * from logonaudit;
no rows selected
SQL>
Edited by: 938946 on Dec 24, 2012 11:00 PM
Edited by: 938946 on Dec 24, 2012 11:01 PM

Answer 1

Hi,
As you are able to connect as SYS, you can query directly v$session and see that the value of PROGRAM column for sessions using SQLPLUS to connect to the database is sqlplus.exe. So, if you change, in your trigger, the condition if upper(v_program) in ('TOAD','SQLPLUS') by if ( upper(v_program) like '%TOAD%' or upper(v_program) like '%SQLPLUS%' ), you'll see insertion in the table logonaudit.