Oracle-L: Re: Advice needed on move to Sun 15K (losing spindles)

From: <Jared.Still_at_radisys.com>
Date: Wed, 09 Oct 2002 13:18:46 -0800
Message-ID: <F001.004E4EEF.20021009131846@fatcity.com>

Others have addressed the performance issues.

What about the admin issues?

If consolidate to a single server, consider a separate ORACLE_HOME for each database. You may need to apply different patches to fix different problems in various databases.

You have this ability now, but will lose it if you consolidate without separate ORACLE_HOME's.

Something else you will lose is the ability to reboot the server if needed for a single database.

Since you may be moving to a 15k, investigate server partitioning to retain this functionality.

Jared

"Miller, Jay" <JayMiller_at_TDWaterhouse.com> Sent by: root_at_fatcity.com
10/09/2002 11:53 AM
Please respond to ORACLE-L

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        Advice needed on move to Sun 15K (losing spindles)

Our CIO has suggested that we get a Sun 15K to house all of our databases. This has some advantages (communication between the various boxes would be much faster) but I have some performance concerns.

Specifically, our main OLTP database would go down from 18 spindles to 8 spindles. Mirroring will take away 4 of those leaving 4 spindles. The vendor (Sun) was recommending striping across all 4 spindles. He said we don't need to worry about i/o issues because there will be a large cache.

I'm skeptical and argued for cutting them in half (striping 2 and 2). We could then at least seperate the redo logs from the datafiles (probably putting them with the oracle executables and some other files).

The Sun rep kept talking up how much more powerful the CPUs were and I kept
saying, "but we're not CPU bound, we don't need any more CPU".

If anyone can either

tell me I'm worrying for nothing
recommend a better way to stripe/distribute my files
provide references or experience to show this is a bad idea

I'd really appreciate it.

Thanks,
Jay Miller

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Author: Miller, Jay
INET: JayMiller_at_TDWaterhouse.com

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