RE: Hundreds of schemas in one instance?

From: Post, Ethan <Ethan.Post_at_ps.net>
Date: Thu, 07 Mar 2002 08:43:26 -0800
Message-ID: <F001.004220C1.20020307084326@fatcity.com>

I will share one example of where a lot of small datafiles come in handy. I have a script that clones a database. Basically you supply a list of volumes on the target server that are available for datafiles and it will cycle through and decide where there is enough room for the file. If you have lot's of small files you can pack out the volumes in the high 90%'s no problem, if you have few large files you will have a lot of unused space usually.

This is nice when you have to cram a ton of databases across a set of disks for testing, qa etc...

• Ethan

-----Original Message-----

Sent: Thursday, March 07, 2002 9:23 AM
To: Multiple recipients of list ORACLE-L

We use Netbackup along with an STK 9710. The reason I mention this is that with applications that have many tablespaces such as Oracle Financials the backups take much longer regardless of the total size of the database. Each datafile is considered a separate backup and takes a couple of minutes to get started. With hundreds of datafiles, this can add over an hour of overhead to a backup. I prefer fewer tablespaces and larger datafiles if possible.

Ron Smith
DBA
Kerr-McGee Corp

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Author: Post, Ethan
  INET: Ethan.Post_at_ps.net

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