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Re: Upgrading from 7.2.1 to 8.x

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Chris Hoover" <revoohc(at)gmail(dot)com>
Cc: "pgsql-admin(at)postgresql(dot)org Admin" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Upgrading from 7.2.1 to 8.x
Date: 2007-10-31 21:30:54
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
"Chris Hoover" <revoohc(at)gmail(dot)com> writes:
> I have an ancient database that is running Postgresql 7.2.1 on AIX.  Is it
> safe to directly upgrade the database to 8.1?  If not, what steps do I need
> to take?

That's a big jump.  You'll want to set up a test installation and do
some compatibility testing --- it seems quite likely to me that you'll
find a few things that need adjustment in your client apps and/or
SQL schema.

Why are you intending to migrate to 8.1 and not 8.2?

> Also, I know there are a ton of fixes/improvements from 7.2, but are there
> any major data losing bugs in this version that I can use as added pressure
> on management?

Egad, man.  7.2 was abandoned years ago because of unfixable bugs...
As a first approximation, you could suppose that every major bug
we've fixed in 7.3 since 7.3.10 is also in 7.2.  And should I point
out that several data-loss bugs were fixed post-7.2.1 before we
abandoned that branch?  If there's any valuable data in that DB,
to still be running 7.2.1 is lawsuit-worthy negligence.  Trawl the
release notes here:

			regards, tom lane

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