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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Multiple Datafiles and performance?
Win2K. If you decide to increase the filesize, do it to more than 2G
(doesn't have to be by much). Of course, you didn't mention autoextend so
this may not be an issue.
Also, just how many physical disks do you have? Logical disks are not the issue. If you're going to get any increased performance you should be putting the second datafile on a second physical disk. Any how come you're not using some sort of RAID device (or don't you have your logical drives striped across your physical drives)?
There is no easy answer to your question without an understanding of the reality of your disk layout.
"Fermin Bernaus"
<fbernaus To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
@sammic.com> cc:
Sent by: Subject: RE: Multiple Datafiles and performance?
ml-errors
08/07/2003 08:05
AM
Please respond
to ORACLE-L
In my experience, spreading datafiles across volumes
As for the file size, I can not say because I have not tested it, but I think it should have no real impact compared to splitting it. Reorganizing the database regularly is a better way to optimize performance.
..............................................Fermín Bernaus Berraondo
..............................................
-----Mensaje original-----
De: Dave Phillips [mailto:dphillips_at_gasper-corp.com]
Enviado el: miércoles, 06 de agosto de 2003 22:14
Para: Multiple recipients of list ORACLE-L
Asunto: Multiple Datafiles and performance?
Oracle 8.1.7.4
Win2k
What is the consensus on datafile sizing and the impact/overhead multiple datafiles have on performance?
For example, if I have one 2.5g datafile, and three 1g datafiles, and I
need more space, would it be better to increase the size of the 1g to
2g or add another 1g datafile?.
Is it better to keep them all uniform in size?
I would think having multiple datafiles that could be spread across drive volumes would be beneficial, am I wrong? (Wouldn't be the first time :)
TIA
David Phillips
Support DBA
Gasper Corp.
BAARF member #30
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