Re: INITIAL and NEXT extent sizing question

From: Shreepad Vaidya <Shreepad.Vaidya_at_alltel.com>
Date: Tue, 26 Sep 2000 23:29 -0500
Message-Id: <10631.117943@fatcity.com>

Hi Fred,

I would suggest the following:

1) Check the growth of tables (over a period od 1-2 weeks minimum).
2) Get the avg row length , growth in terms of bytes.
3) Determine the type of table ( Transaction table , small lookup

table) .
4) Accordingly size the initial and next. ( The allocation can be 1 extent in 3-4 months).
5) There is no fixed rule .You could have increase of 1 extent in 6 months also.
6) Ensure that the table is contiguous . When you create or reorg your table.

HTH

                    shreepad

From: ORACLE-L_at_fatcity.com AT INTERNET on 09/25/2000 11:35 AM

To: ORACLE-L_at_fatcity.com AT INTERNET_at_CCMAIL cc: (bcc: Shreepad Vaidya/IN/ALLTELCORP)

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: Fred Smith
  INET: fred_fred_1_at_hotmail.com

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