RE: trace via logon trigger

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Thu, 13 May 2004 08:30:36 -0600
Message-Id: <6.1.0.6.2.20040513081522.02a84e38@pop.centrexcc.com>

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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Received on Thu May 13 2004 - 09:44:52 CDT