You have to dump the original 7.4.9 version of the database and restore that
into the 8.1.3 database server.
An example:
I have a server db1 which is running pg 7.4.9
I have a server db2 which is to replace db1 running pg 8.1.3
I would likely just do something like this from db2 (assuming no clients are
writing to db1 while this is happening):
pg_dumpall -h db1 | psql -h db2
On Wed, 17 Jan 2007, Andrew Edson wrote:
> Please clear something up for me. The database I'm trying to upgrade was/is empty; only the original installation
waspresent, no tables. Exactly what is it I'm supposed to be dumping? If you mean making a copy of the original
8.1.3,that I've done before, but I'm unclear as to the meaning of what you're saying at the moment. Please enlighten
me.
>
> Jeff Frost <jeff@frostconsultingllc.com> wrote: Andrew,
>
> If you're moving between major versions, a dump/restore is necessary. The
> proper procedure is:
>
> 1) pg_dump the old database by using the new version of pg_dump (8.1.x)
> against the old db server (7.4.9 in your case)
> 2) stop the old database server (and possibly move/rename the old data dir)
> 3) initdb the new database server
> 4) edit postgresql.conf, etc
> 5) start the new database server
> 6) pg_restore the old database into the newly initialized data directory
>
> So, it sounds like you'll need to reinstall 7.4 and bring it back up, then use
> the 8.1.3 pg_dump to create a dump, then restore that into the new 8.1 server.
>
>
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Jeff Frost, Owner <jeff@frostconsultingllc.com>
Frost Consulting, LLC http://www.frostconsultingllc.com/
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