Re: pg_dump LOCK TABLE ONLY question

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Filip Rembiałkowski <filip(dot)rembialkowski(at)gmail(dot)com>
Cc: Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_dump LOCK TABLE ONLY question
Date: 2015-09-27 14:50:38
Message-ID: 2072.1443365438@sss.pgh.pa.us
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=?UTF-8?Q?Filip_Rembia=C5=82kowski?= <filip(dot)rembialkowski(at)gmail(dot)com> writes:
> I'm running pg_dump constrained to one schema. It appears that pg_dump runs

> "LOCK TABLE %s IN ACCESS SHARE MODE" for each table.

> Naturally it makes sense, but...

> This schema has a table that serves as parent for thousands of child
> tables (via INHERITS).

> So effectively, to dump this schema, I have to LOCK all these tables
> not only parent.

They'd all end up locked anyway wouldn't they?

regards, tom lane

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