RE: db file scattered read

I believe that MONITORING instructs Oracle to keep a rough count of the number of rows in a table that have changed since the last time statistics were gathered, so that when you gather statistics next, if you specify GATHER STALE, Oracle will know which tables it actually needs to gather statistics on. I don't believe that MONITORING instructs Oracle to update the statistics automatically.

Justin Cave
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Mladen Gogala
Sent: Friday, August 06, 2004 8:01 PM
To: oracle-l_at_freelists.org
Subject: Re: db file scattered read

On 08/06/2004 08:19:49 PM, Lyndon Tiu wrote:
>
> I have to analyze manually all the time?

In 9i you sen set table to "MONITORING", and Oracle will collect statistics automatically. In 9i you can set dynamic sampling to 4 and Oracle will collect statistics during parse.

--
Mladen Gogala
Oracle DBA
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to:  oracle-l-request_at_freelists.org put
'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------




----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to:  oracle-l-request_at_freelists.org
put 'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------