Re:Adding Control files

From: <dgoulet_at_vicr.com>
Date: Mon, 08 Jul 2002 08:09:00 -0800
Message-ID: <F001.00491199.20020708080900@fatcity.com>

Yechiel,

    Whether you have 1, 2, or a dozen controlfiles is a DBA's call, not someone who "thinks" he knows his stuff. I run my database with 2 control files, on different spindles of course and have no problems of contention there. Now you may be seeing contention with datafiles, redo log files, etc that is masquerading as controlfile contention. This can be particularly so if your redo logs are Oracle's default of 10K. Since every time a redo switch occurs also requires a checkpoint. Therefore try increasing the size of your redo log files. My smallest is 100MB and the largest is .5GB.

Dick Goulet

____________________Reply Separator____________________
Author: "Yechiel Adar" <adar76_at_inter.net.il>
Date:       7/4/2002 10:18 AM

Hello All

I got a request to add at least 2 more control files to the database. Currently we are having 2 control files.

I read the docs (not too much, it is 20:00 now) and did not see it.

1. How do you add a control file? Alter system backup control file and then add it to Init parms?
2. I was told that having 4 control files solves some contention. Anybody encountered this?

Oracle 8.1.6.3.4 on NT4 SP6 server.

Yechiel Adar
Mehish

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Author: Yechiel Adar
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