RE: Privileges by session

From: Blanchard, William <>
Date: Thu, 7 Jan 2010 15:20:31 -0600
Message-ID: <>

That's pretty much what I'm doing. I created a DDL trigger to log all of the DDL the developers were running. You should see their face when you walk to their cube and say "I just noticed you did...". I created another trigger in test now as a precursor to locking down production in which I write to a log table everytime they log in. I will test it for a while and then surprise them with a lockout trigger.  

Let me know if you see any flaws in my trigger so far.  

  IF((SUBSTR(sys_context('USERENV','HOST'),1,7) = 'XXX\IS-'

      OR SUBSTR(sys_context('USERENV','HOST'),1,3) = 'IS-')     AND sys_context('USERENV','OS_USER') NOT IN ('xxx','xxx')) THEN

  • For now, just log the event. Eventually this trigger will change
  • the role for the session to read_only. --EXECUTE IMMEDIATE INSERT INTO loguser.ddl_log (user_name, ddl_date, ddl_type, object_type, owner, object_name, text, os_user, current_user, host, terminal) VALUES (ora_login_user, LOCALTIMESTAMP, 'DEV LOGON', NULL, NULL, NULL, NULL, sys_context('USERENV','OS_USER'), sys_context('USERENV','CURRENT_USER'), sys_context('USERENV','HOST'), sys_context('USERENV','TERMINAL')); END IF; END logon_privs; /


From: Kellyn Pedersen [] Sent: Thursday, January 07, 2010 3:16 PM To:; Blanchard, William Subject: Re: Privileges by session

OK, maybe I'm just evil, but I've gone through this at the last company I was lead DBA at. I was hired with the intention of having me lock down the environment, (they didn't break that to me until a couple weeks in, to be honest...:))
I actually started auditing the databases with my own scripts, tracking the osuser/vs. logins and started to report them, along with the risks. It's not fun and you aren't most people's favorite person, but most developers actually started to appreciate it by the end of my tenure there.  

Not sure if it will work, but you may want to look into different authid options:  

I have always used them with specific user logins, but you may be able to pull the rights right out from under them at the session level this way, too!  

Good luck,

Kellyn Pedersen
Multi-Platform DBA
I-Behavior Inc.  

"Go away before I replace you with a very small and efficient shell script..."

  • On Thu, 1/7/10, Blanchard, William <> wrote:
	From: Blanchard, William <>
	Subject: Privileges by session
	Date: Thursday, January 7, 2010, 1:21 PM
	I have convinced management to allow me to grant read-only
access to the developers. The problem is that they know the application passwords and have been using those passwords to circumvent my controls. Is there a way via a trigger, role, etc to change individual sessions privileges so they have read only (select) permissions? The easiest way would be to change the permissions on the applications but that's not an option.
	Thank you, 
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Received on Thu Jan 07 2010 - 15:20:31 CST

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