Re: upgrade broke stuff, downgrade still broke

On Tue, Feb 27, 2001 at 04:06:03PM -0600, will trillich wrote:
> hi. i've got a little database going on debian (potato) and
> i tried updating my postgresql to 7.0.3 (from 6.5.3). there
> were no fancy plpgsql procedures, no foreign keys (references),
> nothing very advanced at all. just about five tables, a few
> views, and a sequence (serial type).
>
> i did the debian
>     apt-get update && apt-get upgrade
> to install the 7.0.3potato* version from www.samfundet.no/~tfheen
> and during the upgrade a view turned into an empty table, and
> some other tables disappeared altogether.

I don't know much automation Debian's packages provide, but the
database format between 6.5 and 7.0 is _not_ compatible -- you
can't use the same data directories with both versions. To
upgrade and keep the same data, you'll probably need to use
pg_dump to copy the data out of the copy and then reload it
after the upload is complete. Some docs:

    http://postgresql.readysetnet.com/users-lounge/docs/7.0/admin/manage-ag1655.htm

You might be able to use pg_upgrade, but IIRC the 'recommended'
method is to use pg_dump

HTH,

Neil

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Neil Conway <neilconway@home.com>
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