Re: ZERO Database Downtime???

  • From: "David Sharples" <davidsharples@xxxxxxxxx>
  • To: Thomas.Mercadante@xxxxxxxxxxxxxxxxx
  • Date: Wed, 29 Mar 2006 16:06:51 +0100

I believe it has something to do with dataguard,  i.e. failover to standby
server, then upgrade your primary and then switch back

or something like that

On 3/29/06, Mercadante, Thomas F (LABOR) <
Thomas.Mercadante@xxxxxxxxxxxxxxxxx> wrote:
>  Michael,
> Lets say you have a RAC configuration.  You need to perform a minor
> upgrade ( to  You shut down one node.  Upgrade the
> software.  Now what do you do?  Internal (Data Dictionary) patches need to
> be applied (catalog, catproc etc).  You can only do this with the database
> up and (for safety reasons) with no users connected.  How the heck are you
> going to do this with the other node up and running?
> I would love to hear something different from the better educated folks on
> this list.

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