Oracle-L: RE: Multiple block sizes

From: <Avnish.Rastogi_at_providence.org>
Date: Wed, 24 Sep 2003 13:19:43 -0800
Message-ID: <F001.005D0F50.20030924131943@fatcity.com>

Not really, except to watch closely your hit ratio for no default cache other than that we used alter table move and alter index rebuild online option to move tables/indexes.

-----Original Message-----

Sent: Wednesday, September 24, 2003 12:20 PM To: Multiple recipients of list ORACLE-L

Great! You're exactly the guy that I was looking for. Any problems encountered/advice to give?

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Mladen Gogala
Oracle DBA

-----Original Message-----

Avnish.Rastogi_at_providence.org
Sent: Wednesday, September 24, 2003 1:55 PM To: Multiple recipients of list ORACLE-L

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.

-----Original Message-----

Sent: Wednesday, September 24, 2003 9:05 AM To: Multiple recipients of list ORACLE-L

Does anybody have any experience with the multiple block sizes in the database? I'm about to reconfigure my database to have a tablespace with blocksize 16k in addition to the existing 8k tablespaces. Tables in this tablespace will be loaded weekly and read daily, frequently using full table scan (DW style reporting. I'm planning to have bitmap indexes and the rest of the DW arsenal). Does anybody have any negative experiences with that kind of stuff? It's 9.2.0.4 on RH 7.3. Am I running into ora-7445 and ora-0600 type errors?

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Mladen Gogala
Oracle DBA

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Author: <Avnish.Rastogi_at_providence.org
INET: Avnish.Rastogi_at_providence.org

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