Re: How are blobs (oid) stored?

From: Jérôme Etévé <jerome(dot)eteve(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: How are blobs (oid) stored?
Date: 2009-11-26 16:07:59
Message-ID: f516fcd80911260807k49256ae3g8a5dbd4f3f41a5ba@mail.gmail.com
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Thanks Tom.

J.

2009/11/26 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> =?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
>

--
Jerome Eteve.
http://www.eteve.net
jerome(at)eteve(dot)net

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