RE: Notification when something changes in the DB

>For whatever reasons this solutions was found to be not sound by a 3rd
>party "consulting" company which reccommended "Oracle native technology"
>to perform this check.

Hmm... a trigger seem native to me. Perhaps they meant auditing.

-----Original Message-----
[mailto:Val_Gamerman/Victoria_Financial.VICTORIA_FINANCIAL_at_lnn.com] Sent: Tuesday, September 04, 2001 2:33 PM To: Multiple recipients of list ORACLE-L

Hello fellow DBAs',

I have a weird question that I was asked. My first reaction was to answer: "There is no such thing", however I was talked into posting this question here :-)

1. An applicaiton selects certain records (from different tables) from a database..
2. When time comes to update some of these records in the datbase application needs to know if records that it's about to update have been modified by some other user.
3. Currently this is achieved with via triggers. Before performing an update application checks if trigger updated a certain field in the database which serves as an indication that records/fields of interest have been updated.

For whatever reasons this solutions was found to be not sound by a 3rd party "consulting" company which reccommended "Oracle native technology" to perform this check. This company is now unreachable and "management" is requesting to change the application to follow this "review".

Management explanation of how it needs to be done is based on what ADO would do where if you perform an optimistoc lock and then later on try to update an already updated record it would tell you about this upfront., or you would be able to check upfront WITHOUT requiring the DB. I am not familiar with ADO, that much so I can not comment on it.

Can somebody tell me if they can think of way to achieve this?

I know it sounds rather weird request -- it is.

Thanks in advance for any thoughts on this, Val Gamerman.
Oracle DBA

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