Re: Why "Separating Data and Indexes improves performance" is a myth?

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Mon, 26 Apr 2004 21:32:36 +0100
Message-ID: <004801c42bcd$a09d4d10$7102a8c0@Primary>

I believe Stephan Haisley has built a 9i database with a 7.5K block size (not for production reasons, of course).

There is an argument for using a (slightly) unusual size block if your main purpose is to handles large numbers of uniformly sized LOBs. Whether it would work or not is something to be investigated.

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

The Co-operative Oracle Users' FAQ
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Original Message ----- From: "Jacques Kilchoer" <Jacques.Kilchoer_at_quest.com> To: <oracle-l_at_freelists.org> Sent: Monday, April 26, 2004 7:11 PM Subject: RE: Why "Separating Data and Indexes improves performance" is a myth?

> -----Original Message-----
> Paul Drake

>=20

> I would think that non-power of 2 block sizes would
> subject the actor with ORA-600s beyond their wildest
> dreams.

I don't think you can even create a tablespace with a blocksize that's =
not a power of 2 with Oracle 9.0 or higher, but I can tell you that an =
8.1 database with a blocksize of 3K and a locally managed autoallocate =

tablespace makes for some amusing ORA-600s.

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Received on Mon Apr 26 2004 - 15:29:43 CDT