RE: ddl audit trigger

From: Leonard, George <GLeonard_at_wesbank.co.za>
Date: Thu, 13 Jan 2005 14:39:44 +0200
Message-ID: <1831A554E8800049B6B970790D2513C001C35FBF@fnbkrkmx01.fnb.co.za>

Hi all

Well the drop is happily happening, so as for Raj race, the drop wins every time.

The reason I want to catch it is to log the drop to a special hidden place.

Just in case someone tries to drop it to cause some mischief.

This is especially relevant in the development environment where one of the user logins have DBA (don't ask) thus able to drop the trigger.

George

=20________________________________________________

George Leonard
Oracle Database Administrator
New Dawn Technologies @ Wesbank
E-mail:gleonard_at_wesbank.co.za
=20
You Have The Obligation to Inform One Honestly of the risk, And As a Person
You Are Committed to Educate Yourself to the Total Risk In Any Activity! Once Informed & Totally Aware of the Risk, Every Fool Has the Right to Kill or Injure Themselves as They See Fit! =20

-----Original Message-----
From: rjamya [mailto:rjamya_at_gmail.com]=20 Sent: 13 January 2005 14:36 PM
To: Leonard, George
Cc: Oracle-L Freelists
Subject: Re: ddl audit trigger

let me put it this way ...=20

if you shot yourself dead, would you still call 911 and report yourself?=20

since drop will acquire a ddl lock (loose term), execution will be prevented as execution also needs a lock to stop the underlying object from being modified. If what you want must happen, this will become a classic example of a race condition. Basically first one to get the lock wins, in this case the 'drop' got the lock first.

obviously I could be wrong, but a correction is appreciated. Raj

On Thu, 13 Jan 2005 14:06:14 +0200, Leonard, George <GLeonard_at_wesbank.co.za> wrote:
> Hi all
>=20
> Written a database trigger ddltrigger that fires on ddl on database.
> Owned by system
>=20
> Prompt Creating Trigger ddltrigger
> CREATE OR REPLACE TRIGGER DDLTrigger
> BEFORE DROP OR DDL ON DATABASE
>=20
> DECLARE
> BEGIN
> =3D09ddlaudit.audit;
> END;
>=20
> This then calls a package that does a small amount of work (also owned
> by system), this then calls the meaty packaged owned by another user
> (not system) that does the actual logging.
>=20
> Problem I am having is this trigger does not fire when it is dropped
> itself.
>=20
> Any ideas
>=20
> George
> =3D20________________________________________________
> George Leonard
> Oracle Database Administrator
> New Dawn Technologies @ Wesbank
> E-mail:gleonard_at_wesbank.co.za
> =3D20
> You Have The Obligation to Inform One Honestly of the risk, And As a
> Person
> You Are Committed to Educate Yourself to the Total Risk In Any
Activity!
> Once Informed & Totally Aware of the Risk,
> Every Fool Has the Right to Kill or Injure Themselves as They See Fit!
> =3D20
>=20
>

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The information in this e-mail is confidential and is intended solely for= =20the addressee.
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Received on Thu Jan 13 2005 - 06:35:14 CST