RE: Oracle upgrade without downtime??
Date: Wed, 1 Sep 2010 00:27:39 -0400
Thanks for your suggestions.
15-20 mins downtime is acceptable.
I couldn't find any whitepapers on transportable tablespace for upgrade. There was one in OTN, however the link is broken or the document is taken off the site...
> Date: Tue, 31 Aug 2010 22:21:14 +0200
> From: a.piesk_at_gmx.net
> To: nupendra_at_hotmail.com
> CC: oracle-l_at_freelists.org
> Subject: Re: Oracle upgrade without downtime??
> Upendra N schrieb:
> > For the database upgrades Oracle seems to be recommending Logical
> > standby database (SQL Apply).
> > There are a lot of restrictions with Logical standby. Will it work with
> > Physical standby?
> no, it won't work with physical standby.
> how much downtime you're willing to accept, 5min, 10min, 20min?
> did you test how long a upgrade of your database actually take?
> if the time taken by the upgrade really exceeds your limit, you should take a look at transportable
> tablespaces. using this you can upgrade large databases within 1-5 minutes, depending on the number
> of tablespaces you have.
> another way, for small amounts (some tens of GB) of data, is replication using materialized views.
> very easy to setup and works very well. depending on the amount of activity in the database you can
> switch within 1 minute.