RE: INITIAL and NEXT extent sizing question

From: <Deepender_Gupta_at_escorts.co.in>
Date: Wed, 27 Sep 2000 17:21:42 +0530
Message-Id: <10632.117972@fatcity.com>

But Oracle says that we try to have our table in not more than 5 extents. What is the advantage of having more extents of smaller size as opposed to having 1 big
extent.

Kindly elaborate.
Deepender

From: Suhen Pather <PatherS5_at_telkom.co.za> on 09/26/2000 06:40 PM

To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>@SMTP_at_AMG1 cc:
Subject: RE: INITIAL and NEXT extent sizing question

It would all depend on the table. If the table is not going to grow then the NEXT should be set low (Hence the table would not extend). If the table would be continually growing then the NEXT should be sized accordingly to allow for inserts.
Try not to make the NEXT too big (>1GB) eg. You rather have 4 * 500M extents as opposed to having 1 * 4GB extent.

HTH
Suhen

>>> Venkat_Kalepalli_at_satyam.com 09/26/00 02:51PM >>>
I think U can set NEXT also same as INITIAL.

Venkat
Ph:7846101- Extn: 5648

> ----------
> From: Fred Smith[SMTP:fred_fred_1_at_hotmail.com]
> Reply To: ORACLE-L_at_fatcity.com
> Sent: Monday, September 25, 2000 10:05 PM
> To: Multiple recipients of list ORACLE-L
> Subject: INITIAL and NEXT extent sizing question
>
> I have a table with rows currently populating. I wish to resize the
table
>
> for better performance. What is the best way I should figure out how
to
> size my INITIAL and NEXT extent sizes for this table. Is it just:
> 1) Analyze the table
> 2) SELECT BLOCKS * (block_size) from dba_tables for the table in
question
> =
> what the initial size should be set to.
> 3) What determines what I should set the NEXT extent size to then?
>
> Thank you,
> -Fred S.
>

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--
Author: Suhen Pather
  INET: PatherS5_at_telkom.co.za

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Received on Wed Sep 27 2000 - 06:51:42 CDT