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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Re: sequential reads/scattered reads
Thanx Thomas .
i am pretty new to RAID.
will not moving my tables and indexes to seperate tablespace
reduce my i/o ?
my h/w setup is:
there is a logical partition D:
of size 80GB with RAID5.
is it enough that i move to seperate tablespace ? os should i create another partition like D: and put my files there ?
i am novice DBA . plz. guide me Thomas.
On Thu, 11 Jul 2002 Thomas Day wrote :
>
>If you can move the indexes to a separate physical device (and
>their own
>tablespace/datafile) then you will reduce I/O contention. If
>the
>tablespace/datafile is on the same RAID device then you will be
>using the
>same r/w heads and you will not reduce I/O contention.
>
>
>
> oraora
> oraora To: Multiple
>recipients of list ORACLE-L
> <oraoraora
><ORACLE-L_at_fatcity.com>
> @rediffmail.c cc:
> om> Subject: sequential
>reads/scattered reads
> Sent by: root
>
>
> 07/11/2002
> 07:33 AM
> Please
> respond to
> ORACLE-L
>
>
>
>
>
>
>Guys,
>
>Querying my v$session_wait shows 10 rows each DB FILE
>SEQUENTIAL
>READ and DB FILE SCATTERED READ.
>
>manuals explain it all b'coz of I/O.
>
>there are 33 tables and 110 indexes in the same USERS
>tablespace
>with only one datafile USERS01.DAT of size 12GB.
>
>it's physically laid out in D:\oracle\data.
>but the hard disk capacity is 100GB with 8 disk heads and
>RAID5.
>
>will not moving the tables and indexes to seperate tablespace
>reduce I/O traffic ? my manager here says that since it is
>configured with RAID5 and 8 disk heads , it's not a problem.
>
>is it so ? is he right ?
>plz. clarify me. i need to explain him.
>it's urgent.he is sitting on my head.
>
>TIA.
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: oraora oraora INET: oraoraora_at_rediffmail.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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 Jul 11 2002 - 10:28:38 CDT
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