Re: converting older databases - Mailing list pgsql-general

From Sathish Duraiswamy
Subject Re: converting older databases
Date
Msg-id fa94608e0903051135j760a4e4an54c2f5126c9b12f1@mail.gmail.com
Whole thread Raw
In response to Re: converting older databases  (John R Pierce <pierce@hogranch.com>)
Responses Re: converting older databases
List pgsql-general
hai

Recently we migrated our database from 8.2.4 to 8.2.12 , went through manuals and followed the below steps

1.pg_dumpall to take data dump  of current database
2.stopped database
3.moved the pgsql to backup folder
4.downloaded 8.2.12 , configured - gmake - gmake install
5.recreated cluster directory
6.restored the database with datadump

It was like complete re-installation process.

Can anyone explain a alternative method to upgrade a existing database

thanks in advance

regards
sathish


On Fri, Mar 6, 2009 at 12:28 AM, John R Pierce <pierce@hogranch.com> wrote:
Heine Ferreira wrote:
Hi

When you install a newer version of Postgres how do you upgrade your database to the new format?
Apparantly you can't just backup the old database and restore it on the new software.
How do you do this on Windows?

you pg_dump >dumpfile.sql the old one, psql -f dumpfile.sql  to the new.

Typically, you only need to do this between major upgrades, like 8.2.x to 8.3.y ...    8.3.x to 8.3.y doesn't require a dump/restore unless the release notes state otherwise (this has only happened a few times, I think there was a 8.0.1->8.0.N that required it due to a minor change required by a bugfix)



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