Oracle-L: Re: rman question(allocating channels)

From: Ed Lewis <eglewis_at_hotmail.com>
Date: Wed, 28 Aug 2002 05:23:21 -0800
Message-ID: <F001.004C1421.20020828052321@fatcity.com>

Joe,

I have the same situation.
I my case I used 2 channels, and
so around a 25-30% decrease in
the backup time for a 30gb database.

Once I increased it to 3 channels
the payback was minimal. It also
became very cpu intensive,
so I kept the setting at 2.

Original Message ----- From: JOE TESTA To: Multiple recipients of list ORACLE-L Sent: Wednesday, August 28, 2002 8:38 AM Subject: rman question(allocating channels)

I've tried to find this in the docs to no avail.

If I'm writing out an RMAN backup to one disk(yes this is not ideal), then does it make sense to allocate multiple channels?

Are multiple channels related to CPUs or to destinations?

thanks, joe

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Author: Ed Lewis
INET: eglewis_at_hotmail.com

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