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Re: trigger problem

From: DA Morgan <damorgan_at_x.washington.edu>
Date: Fri, 15 Apr 2005 06:49:57 -0700
Message-ID: <1113572773.177478@yasure>


Michel Cadot wrote:

> "DA Morgan" <damorgan_at_x.washington.edu> a écrit dans le message de news:1113513389.919405_at_yasure...

> | Michel Cadot wrote:
> |
> | > <nitin_kaul_at_rediffmail.com> a écrit dans le message de
> | > news:1113478441.113979.12840_at_l41g2000cwc.googlegroups.com...
> | > | hi
> | > | i created a trigger to block developers using TOAD on Production db.
> | > | following is the trigger:
> | > |
> | > | CONNECT / AS SYSDBA;
> | > |
> | > | CREATE OR REPLACE TRIGGER block_toad_from_prod
> | > | AFTER LOGON ON DATABASE
> | > | DECLARE
> | > | v_prog sys.v_$session.program%TYPE;
> | > | BEGIN
> | > | SELECT program INTO v_prog FROM sys.v_$session
> | > | WHERE audsid = USERENV('SESSIONID')
> | > | AND audsid != 0 -- Don't Check SYS Connections
> | > | AND rownum = 1; -- Parallel processes will have the same AUDSID's
> | > |
> | > | IF UPPER(v_prog) LIKE '%TOAD%' OR UPPER(v_prog) LIKE '%T.O.A.D%' THEN
> | > | RAISE_APPLICATION_ERROR(-20000, 'Toad users not allowed on PROD
> | > | DB!');
> | > | END IF;
> | > | END;
> | > |
> | > |
> | > | It works fine and does what it was created for.But the problem is that
> | > | i also have multimaster replication on prod db..and the repadmin jobs
> | > | are faling due to this trigger..i saw the error in alert file as the
> | > | jobs were continously failing...it was giving me error at recursive sql
> | > | statement..
> | > |
> | > | so is there some problem with trigger....or any other way to write it.
> | > |
> | > | regards
> | > |
> | >
> | > This will not work if a user change the name of toad executable
> | > to, for instance, gotcha.exe.
> | >
> | > Regards
> | > Michel Cadot
> |
> | But they won't change the name if you don't tell them what you are doing.
> | --
> | Daniel A. Morgan
> | University of Washington
> | damorgan_at_x.washington.edu
> | (replace 'x' with 'u' to respond)
> 
> To the OP, my post was just a note not intended to solve the problem.
> For this, you have to answer to Daniel's questions (version, error message).
> 
> To Daniel, when you see "ORA-20000: Toad users not allowed on PROD DB!",
> you know what the DBA does or wants to do.
> 
> Regards
> Michel Cadot

If you are so sophisticated that you know all about v$session, etc. The person with that knowledge is not an end user.

But lets rewrite your error message and see what will happen next.

"ORA-20000: You have attempted to use TOAD to access a production database in violation of company policy. An email has been sent to HR and your manager notifying that you have violated company policy"

If a little UTL_MAIL or UTL_SMTP is in the mix to actually do it my suspicion is that they won't ever risk trying it again. Locked doors have never stopped a thief. A certainty of being caught does.

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace 'x' with 'u' to respond)
Received on Fri Apr 15 2005 - 08:49:57 CDT

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