| From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
|---|---|
| To: | Glyn Astill <glynastill(at)yahoo(dot)co(dot)uk> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Steve Clark <sclark(at)netwolves(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: pg_dumpall |
| Date: | 2008-01-17 19:21:35 |
| Message-ID: | 20080117192135.GB21761@svana.org |
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| Lists: | pgsql-general |
On Thu, Jan 17, 2008 at 11:14:22AM -0800, Glyn Astill wrote:
> > begin;
> > set transaction isolation level serializable;
> >
> > --- begin dumping stuff;
> >
>
> Wouldn't that just lock everything so nothing could be updated? Or
> just the table it is outputting?
PostgreSQL uses MVCC, which means the whole thing is lock free. It just
requires more diskspace. To keep the older versions around.
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Those who make peaceful revolution impossible will make violent revolution inevitable.
> -- John F Kennedy
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