Re: Upgrade DB with no downtime

From: Jared Still <jkstill_at_cybcon.com>
Date: Thu, 27 May 2004 06:03:46 -0700
Message-Id: <1085663026.13678.17.camel@poirot>

On Thu, 2004-05-27 at 05:02, Ivan Chow wrote:
> The database needs to be available in read-write mode when we do the upgrade
> from 8i to 9i or 9i to 10G. Hardware is not an issue as long as we can
> achieve zero downtime during the upgrade. Not sure how we can achieve that.
> Anyone has any experience or suggestions?
>
> thanks.
>
> Ivan
>

When you consider that the database being migrated must be in 'startup migrate' mode, and that *many* changes will be made to the data dictionary, it would not seem possible to do what you are asking.

Jared

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Received on Thu May 27 2004 - 07:53:05 CDT