Re: minimizing downtime when upgrading

On Thu, 15 Jun 2006, snacktime wrote:

> Anyone have any tips for minimizing downtime when upgrading?  So far
> we have done upgrades during scheduled downtimes.  Now we are getting
> to the point where the time required for a standard dump/restore is
> just too long.  What have others done when downtime is critical?  The
> only solution we have been able to come up with is to migrate the data
> on a per user basis to a new database server.  Each user is a
> merchant, and the data in the database is order data.  Migrating one
> merchant at a time will keep the downtime per merchant limited to just
> the time it takes to migrate the data for that merchant, which is
> acceptable.
>
> Any other ideas?

we use replication package slony for upgrading.

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 	Regards,
 		Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83