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Home -> Community -> Mailing Lists -> Oracle-L -> RE: trace via logon trigger
->I don't like to use a wider scope than necessary to solve a problem,
I agree, in my case, it was necessary. Our app has many weblogic servers
running in dozen or so unix servers connecting to different userids. I
built my script so that we can turn on tracing in any of those
userids,IP address combination and so original script has many more
lines than posted here. We can't statically turn on tracing from a
script since weblogic can open new connections.
It is also easier to turn off tracing by dropping one trigger and restarting the app.
Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Wolfgang Breitling
Sent: Thursday, May 13, 2004 9:31 AM
To: oracle-l_at_freelists.org
Subject: RE: trace via logon trigger
I don't like to use a wider scope than necessary to solve a problem,
i.e.
use a "logon on database" trigger when a "logon on schema" is
sufficient.
Limit potential damage to the smallest possible exposure.
This works for me:
SQL> create user kpayton identified by kpayton;
User created.
SQL> create or replace trigger kpayton.logon_trigger
2 after logon on kpayton.schema
3 begin
4 execute immediate 'alter session set events ''10046 trace name
context forever, level 4''';
5 exception
6 when others then null;
7 end;
8 /
Trigger created.
SQL> show errors
No errors.
SQL>
PS. Just because it works outside the trigger doesn't mean it will work
inside the trigger. User kpayton needs the "alter session" privilege
granted explicitly and directly.
At 07:58 AM 5/13/2004, you wrote:
>This should work...
>create or replace trigger set_system_event
>after logon on database
>declare
>v_user dba_users.username%TYPE:=user;
>sql_stmt1 varchar2(256) :='alter session set events '||chr(39)||'10046
>trace name context forever, level 12'||ch r(39);
>begin
> if (v_user='XXXX') THEN
> execute immediate sql_stmt1;
> end if;
>end;
>/
regards
Wolfgang Breitling
Centrex Consulting Corporation
www.centrexcc.com
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