Oracle FAQ Your Portal to the Oracle Knowledge Grid

Home -> Community -> Mailing Lists -> Oracle-L -> BAARF


From: Thomas Day <>
Date: Thu, 25 Sep 2003 10:04:42 -0800
Message-ID: <>

I would love to have a definitive site that I could send all RAID-F advocates to where it would be laid out clearly, unambiguously, and definitively what storage types should be used for what purpose.

Redo logs on RAID 0 with Oracle duplexing (y/n)? Rollback (or undo) ditto?
Write intensive tablespaces on RAID 1+0 (or should that be 0+1)? Read intensive tablespaces on RAID ? (I guess 5 is OK since it's cheaper than 1+0 and you won't have the write penalty)

While we're at it could we blow up the OFA myth? Since you're tablespaces are on datafiles that are on logical volumns that are on physical devices which may contain one or many actual disks, does it really make sense to worry (from a performance standpoint) about separating tables and indexes into different tablespaces?

We have killed the "everything in one extent" myth haven't we? Everybody's comfortable with tables that have 100's of extents?

And while we're at it, could we include the Oracle 9 multiple blocksizes and how to use them. The best that I've seen is indexes in big blocks, tables in small blocks --- uh, oh, time to separate tables and indexes.

Maybe we will never get rid of the OFA myth.

Just venting.

Tired of arguing in front of management with Oracle certified DBAs that RAID 5 is not good, OFA is unnecessary, and uniform extents is the only way to go. Looking for a big stick to catch their attention with.


Please see the official ORACLE-L FAQ:

Author: Thomas Day

Fat City Network Services    -- 858-538-5051
San Diego, California        -- Mailing list and web hosting services
To REMOVE yourself from this mailing list, send an E-Mail message to: (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 Sep 25 2003 - 13:04:42 CDT

Original text of this message