Re: Multiple block sizes

[Wolfgang Breitling]

I'm not there yet, at least not in production, but I am looking forward to 
putting thousands of small (actually empty) tables and indexes of 
Peoplesoft Financials into a 2K tablespace. Not that they will ever occupy 
any room in the buffer pool, but just for the savings in disk space (and 
backup time until we go to RMAN and incremental backups). 10,000 tables 
occupying 2 2K blocks instead of 2 8K blocks is a savings of almost 120M. 
In order not to waste the 2K buffer pool I'll find a few suitable lookup 
tables that could benefit from what will then be a keep pool.

At 07:44 AM 9/25/2003 -0800, you wrote:
Hi!

I think putting your small tables to 2K block size is quite pointless 
(unless you have tens of thousands of these tables continously in buffer 
cache).

Tanel.

----- Original Message -----
From: <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]
To: <mailto:[EMAIL PROTECTED]>Multiple recipients of list ORACLE-L
Sent: Wednesday, September 24, 2003 8:54 PM
Subject: RE: Multiple block sizes
I have little bit experience on that. I am keeping indexes in 32K 
block  'cause Oracle access indexes sequentially and placing indexes in 
large block would help in reducing IO.  All the tables are in 8K block 
size but you can think about putting small tables in 2K or 4KB block size 
to better utilize your RAM. We are on AIX 5.1 , Oracle 9202.
Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com
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Author: Wolfgang Breitling
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