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Home -> Community -> Usenet -> c.d.o.server -> Re: Is it wise to create datafiles that use over 90% of the disk space?
It depends on which OS you are using. Most Unix
OS (AIX, HP-UX, Solaris)have built in the 10%
overhead which, if exceeded 100%, will cause the
OS to use the filesystem in space for time
algorithm instead of the opposite. This will
cause a performance degredation. (That's why you
notice on some filesystems, it's possible to
exceed 100% without crashing). Other OS's such
as NCR (boo) don't have this built in, so by
filling up over 90% will cause this performance
issue.
So, as far as performance is concerned, it shouldn't be a problem depending on your OS. From a maintenance point-of-view, it all depends on your setup. Are you concerned about I/O and striping your datafiles? Is there an issue of wasted space if your tablespace doesn't use the whole thing? Are you using auto-extend, and could this be a problem?
There are several issues that you need to look at, but the bottom line is, no, filling up 90% of your filesystem is not a problem that will cause your instance you come to a halt. Just remember the performance aspects...
Scott
In article
<8525682A.00557CFD.00_at_smtp.apprise.com>,
"Bruce Taneja" <Bruce_Taneja_at_coregis.com> wrote:
>
>
> If you have only datafiles, it should be ok..
> You can move the datafiles to a different file
system, should some of them start
> growing..
> -bruce
>
> "Stephanie Wood" <steph2000_at_home.com> on
11/08/99 02:04:04 AM
>
> Please respond
to "comp.databases.oracle.server_at_list.deja.com"
>
<comp.databases.oracle.server_at_list.deja.com>
>
>
To: "comp.databases.oracle.server_at_list.deja.com"
>
<comp.databases.oracle.server_at_list.deja.com>
> cc:
> Subject: Is it wise to create datafiles that
use over 90% of the disk space?
>
> Message from the Deja.com forum:
> comp.databases.oracle.server
> Your subscription is set to individual email
delivery
>
> Is it wise to create datafiles for Oracle on
Unix (AIX) that fill the file
> systems over 90% full? Of course, I don't have
autoextend on.
>
> My Unix background says never fill a file
system > 90% full, but if the
> datafiles aren't growing does Oracle have a
problem with this? i realize
> that you don't want ORACLE_HOME to fill up, or
other
> areas.....
>
> Thanks!
> Stephanie
>
>
Sent via Deja.com http://www.deja.com/
Before you buy.
Received on Mon Nov 15 1999 - 12:48:57 CST
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