Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> RE: Locally managed tablespaces

RE: Locally managed tablespaces

From: paquette stephane <stephane_paquette_at_yahoo.com>
Date: Thu, 01 Feb 2001 03:15:56 -0800
Message-ID: <F001.002A6FD5.20010201024042@fatcity.com>

The 505 extents for an 8K block size is not the maximum total extents . It's the maximum performance wise, in order to read only one block to know where all extents are.

It is obtain by (db_block_size/16 -7)
So ((8192/16) -7) =505.

This is how many extents location can be store in 1 block in the segment header.

My sources are the document following the document "How to stop defragmenting and start living" and Steve Adams web site.


Stephane Paquette
DBA Oracle
stephane_paquette_at_yahoo.com

Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: =?iso-8859-1?q?paquette=20stephane?=
  INET: stephane_paquette_at_yahoo.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).
Received on Thu Feb 01 2001 - 05:15:56 CST

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US