RE: logon trigger with machine condition

Hi there

Have a look at the following=20

=09 , sys_context('USERENV',

'IP_ADDRESS')
=09 , Sys_context('USERENV', 'HOST')
=09 , Sys_context('USERENV',

'OS_USER')
=09 , Sys_context('USERENV',

'TERMINAL') that will give you the host name.

I would suggest not hard coding the host name you want to monitor. Rather add it as a record in a table. That way you can add and removed records at will.

George
=20________________________________________________
George Leonard
Oracle Database Administrator
New Dawn Technologies @ Wesbank
E-mail:gleonard_at_wesbank.co.za
=20

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-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of jsb_at_digistar.com Sent: 01 February 2005 21:35 PM
To: oracle-l_at_freelists.org
Subject: logon trigger with machine condition

I'm looking for a way to trace a session on logon with the condition that
it be from a particular host. Wolfgang brought up a good point about logon to a particular schema but in this case I need a database-wide trigger.

I'm looking to do something like this below, but it does not work:

CREATE OR REPLACE TRIGGER trace_a_session
=20 AFTER LOGON ON DATABASE

BEGIN
=20 IF USER LIKE 'USER'
=20 THEN
=20 IF HOST LIKE 'SOMEHOST.DOMAIN.COM'
=20 THEN
=20 EXECUTE IMMEDIATE 'alter session set events ''10046 trace name=

context forever, level 12''';
=20 END IF;
=20 END IF;

END;
/

There apparently is no PL/SQL HOST function which is what I need, or a way
to do it via a nested select and variables. I intend to purchase a book or two after work tonight but I need some help now if anyone has dealt with this situation before.

regards,
Jason

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