Subject: Re: Major upgrade advice
From: "Joshua D. Drake" <jd@commandprompt.com>
To: Steve Crawford <scrawford@pinpointresearch.com>
Cc: pgsql-admin@postgresql.org
In-Reply-To: <48594429.7040001@pinpointresearch.com>
References: <48594429.7040001@pinpointresearch.com>
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Organization: Command Prompt, Inc.
Date: Wed, 18 Jun 2008 10:28:33 -0700
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On Wed, 2008-06-18 at 10:21 -0700, Steve Crawford wrote:
> I'm getting ready to tackle another upgrade: 7.4.6 -> 8.3.3. The 
> preliminaries (development/testing) look good but I'd like 
> suggestions/warnings/comments on:
> 
> 1. Removing OIDs on user tables.
> 
> I don't see any dump or restore options to remove OIDs. Am I better off 
> modifying the dump to alter the "SET default_with_oids = true;" lines or 
> going through all the user tables in advance and running "ALTER TABLE 
> ... SET WITHOUT OIDS"? Other options?

If the table has oids, pg_dump is going to grab them and restore them as
such. If you are assured that you don't need OIDs I would drop the oid
columns from the user tables before the upgrade.

> 
> 2. Alter encoding from C to utf8.

Very good chance the dump will not load without going through a cleanup
with iconv.

Joshua D. Drake