Re: The postgres database -- necessary? If so, how to cleanse?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: René Fournier <m5(at)renefournier(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: The postgres database -- necessary? If so, how to cleanse?
Date: 2011-10-26 22:10:34
Message-ID: 13602.1319667034@sss.pgh.pa.us
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=?iso-8859-1?Q?Ren=E9_Fournier?= <m5(at)renefournier(dot)com> writes:
> I accidentally imported lots of data into the postgres database via something like:
> psql -U postgres -q -f super_massive_database_dump.sql

> Now, although I've manually dropped all the tables -- and \d+ shows
> nothing -- there are still various views, functions, etc that must
> account for a lot of disk space. From \l+, I see that postgres still
> occupies 65GB.

[ raised eyebrow ... ] It's pretty hard to conceive of system catalogs
occupying 65GB. You might want to look into where that number is coming
from. (Large objects maybe?)

> So my question is, what's the easiest way to reclaim
> that space? Can I drop postgres and just recreate it?

Yeah, if you want.

regards, tom lane

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