Re: How are blobs (oid) stored?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: jerome(dot)eteve(at)gmail(dot)com
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: How are blobs (oid) stored?
Date: 2009-11-26 15:52:11
Message-ID: 2460.1259250731@sss.pgh.pa.us
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=?UTF-8?B?SsOpcsO0bWUgRXTDqXbDqQ==?= <jerome(dot)eteve(at)gmail(dot)com> writes:
> I know this is none of the user's business, but I'm wondering how
> blob's implemented as oid are stored in the postgresql data storage.
> Are each of them kept in a separate file, or are they chunked into
> pieces and scattered ?

They're in chunks in the pg_largeobject catalog.
http://developer.postgresql.org/pgdocs/postgres/catalog-pg-largeobject.html

regards, tom lane

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