Re: synchronous commit in dump

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>
Cc: Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: synchronous commit in dump
Date: 2010-02-24 16:55:34
Message-ID: 603c8f071002240855q1e6492a0oe2490a4c2a13337b@mail.gmail.com
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On Tue, Feb 23, 2010 at 6:54 PM, Jaime Casanova
<jcasanov(at)systemguards(dot)com(dot)ec> wrote:
> On Tue, Feb 23, 2010 at 4:40 AM, Magnus Hagander <magnus(at)hagander(dot)net> wrote:
>> 2010/2/23 Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>:
>>> Hi,
>>>
>>> it's safe to set synchrounous_commit to off in a pg_dump generated
>>> script? if yes, would this help to the performance of restore a
>>> database?
>>
>> It might help if you're dumping as individual inserts and not COPY,
>> but if you're doing that you're not asking for performance in the
>> first place.
>
> That isn't necesarily true. Maybe you don't have shell access to the
> database server
> but just trough pgadmin or something like that...
>
> in that env the copy of the dumps won't work so you need to make the backup with
> inserts (by need) and still want some performance

I don't see why that would preclude using COPY. But anyway in that
case you could still run the restore with -1.

...Robert

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