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Re: Oracle Server will write continually to control files.

From: DA Morgan <damorgan_at_x.washington.edu>
Date: Wed, 12 Jan 2005 23:29:50 -0800
Message-ID: <41e62387$1_1@127.0.0.1>


Orlando Amador wrote:

> We have a Oralce 9.2 Standard database server with multiple database
> instances. Each instance has 2 control files, although in the same
> directory.
>
> Using a file monitor we find that the server will write a block of 8K to
> offset 24576 of the control files every 3 seconds. I wonder if this some
> kind of synchronization, locking, or heartbeat function in the database.
> The accumulated IO from the writes from a single database is not a problem,
> but the accumulation from multiple database is creating problem for our
> backup software (Veritas BackupExec with OFO).
>
> We figure that we can repartition this server and separate the databases in
> separate disk, but we are saving that as a last resort. I was hopping
> someone could point me to the reason of this updates and if there is a way
> to configure the timing? Maybe this is a required function but it could be
> slow down a bit? This updates happens constantly, even when the database is
> not in use and there is no connections.
>
> Any suggestions?

<snipped>
> Saludos
> Orlando Amador

Everything Tom Kyte said plus ... why aren't you using RMAN?

-- 
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu
(replace 'x' with 'u' to respond)
Received on Thu Jan 13 2005 - 01:29:50 CST

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