On Fri, Jan 20, 2012 at 16:45, Nicholson, Brad (Toronto, ON, CA)
> In the past I've used Slony to upgrade much larger database clusters than yours with minimal down time (I'm talking seconds for the actual master switch). You set up a new replica on the new version and then move the master from old to new. No need to explicitly resync afterwards.
Would that work to upgrade from, say, 8.4 to 9.1? Using slony?
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