Actually, even something like Hp's ServiceGuard is not so 
graceful, depending on the app using the database.  I have
had a database fail and know one know and a different
database fail and everyone know.  You really have to take into
account with the app that it might lose connection.  You need
to code in retries and all that stuff.  If you get it coded
in such a way that it can handle a 5 minute interruption then
all is good.  

-----Original Message-----
Carmichael
Sent: Saturday, January 05, 2002 5:55 AM
To: Multiple recipients of list ORACLE-L



--- Jeremiah Wilton <[EMAIL PROTECTED]> wrote:

> 
> If you perform graceful failover, A.K.A. role reversal, you can have
> the former primary pick up as the standby immediately after failover
> without recopying.  I cover this topic in my Openworld paper on my
> site.
> 


the problem is, you usually don't have a chance to do graceful
failover.  Database goes down hard and you need the standby.

When you CAN do the graceful failover, it's a lovely thing :)

Rachel


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