> From: Shapira, Yoav [mailto:[EMAIL PROTECTED] > You need to schedule down time for the server. Perhaps a > night time window like 3am when usage is minimal. Then do > the upgrade.
An alternative, if you have the hardware for it, would be to install the new app version on new hardware but using the same database and other resources as the old version. Then change your DNS to point to the new version, wait a day or so for that to propagate through the DNS caches, shut down and upgrade the old server, restart that old server with the new version, change your DNS settings back, wait a day or so, and then turn off your new hardware. This presupposes that the new and old apps are compatible at the data layer, and that it's only the code that differs. Clearly, if they are not, you're going to have to stop the service at some point to change the schema. Just my €0.02 (it's a stronger currency than $0.02 at the moment ;-) ) - Peter
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