Re: General migration question

Excerpts from Greg Spiegelberg's message of mar ago 31 09:04:18 -0400 2010:
> Probably questions best asked on hackers but I figure many are represented here.
> Will there ever be a release where a dump-restore is not necessary?
> Perhaps, at least, minor releases (e.g. 9.0 to 9.1) will not require a
> dump-restore?

9.0 to 9.1 is not a minor release.  9.0.0 to 9.0.1 is a minor release,
and this doesn't require a dump/reload, but it also doesn't have any new
features.  9.0 to 9.1 is just as major as 8.4 to 9.0 is.  (The rule is:
a change in second digit is major release, a change in first digit is
marketing pressure)

You can upgrade in place using pg_upgrade from 8.4 to 9.0 (thus you
don't need dump/reload).  In general, it will be possible to migrate
from one major version to the next with pg_upgrade starting with the
8.4-to-9.0 jump.

--
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
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