Re: Finding the most actively DML'd table

Hi,

    I did something similiar before. It cound be meaningful in some case.     My database was io-bound and top wait event was "log file sync". It can because of too much commit, I asked business guys and according to there data and business logic, there cound't be so much transactions. I reviewed statspack and v$sql according to executions and sql being with update/insert/delete, I found the root cause, that particular SQL generated 80%(maybe) of total commits.     We rewrote the application and IO get down.

Regards.
Zhu Chao.

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Saturday, December 20, 2003 4:04 AM

> Is it possible to find how many DML operations have ocurred on a given table in
> a given time period? I'd like to be able to rank the tables in a database based
> on the number of DML actions performed on them in a given time period. It would
> be interesting to see which are the 'hot spots' so to speak, and either a) tune
> access to those tables accordingly, or b) put out the fires.
>
> Granted, this strays somewhat from the Millsapian/Holtian doctrine of focusing
> on the user action with the largest business impact, but I still think it would
> be interesting to see.
>
> Thanks for any help,
>
> -- Dan
> ========================================================================
> Daniel Hanks - Systems/Database Administrator
> About Inc., Web Services Division
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: zhu chao
  INET: chao_ping_at_vip.163.com

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