Re: out of memory in backup and restore

To decrease shared buffers you need restart your pgsql.

If do you make on df -h command what is the result, please send.

2006/12/15, Thomas Markus <t(dot)markus(at)proventis(dot)net>:
>
> Hi,
>
> free diskspace is 34gb (underlying xfs) (complete db dump is 9gb). free
> -tm says 6gb free ram and 6gb unused swap space.
> can i decrease shared buffers without pg restart?
>
> thx
> Thomas
>
> Shoaib Mir schrieb:
> > Looks like with 1.8 GB usage not much left for dump to get the
> > required chunk from memory. Not sure if that will help but try
> > increasing the swap space...
> >
> > -------------
> > Shoaib Mir
> > EnterpriseDB ( www.enterprisedb.com <http://www.enterprisedb.com>)
> >
> > On 12/15/06, *Thomas Markus* <t(dot)markus(at)proventis(dot)net
> > <mailto:t(dot)markus(at)proventis(dot)net>> wrote:
> >
> > Hi,
> >
> > logfile content see http://www.rafb.net/paste/results/cvD7uk33.html
> > - cat /proc/sys/kernel/shmmax is 2013265920
> > - ulimit is unlimited
> > kernel is 2.6.15-1-em64t-p4-smp, pg version is 8.1.0 32bit
> > postmaster process usage is 1.8gb ram atm
> >
> > thx
> > Thomas
> >
> >
> > Shoaib Mir schrieb:
> > > Can you please show the dbserver logs and syslog at the same
> > time when
> > > it goes out of memory...
> > >
> > > Also how much is available RAM you have and the SHMMAX set?
> > >
> > > ------------
> > > Shoaib Mir
> > > EnterpriseDB ( www.enterprisedb.com
> > <http://www.enterprisedb.com> <http://www.enterprisedb.com>)
> > >
> > > On 12/15/06, *Thomas Markus* <t(dot)markus(at)proventis(dot)net
> > <mailto:t(dot)markus(at)proventis(dot)net>
> > > <mailto: t(dot)markus(at)proventis(dot)net
> > <mailto:t(dot)markus(at)proventis(dot)net>>> wrote:
> > >
> > > Hi,
> > >
> > > i'm running pg 8.1.0 on a debian linux (64bit) box (dual
> > xeon 8gb ram)
> > > pg_dump creates an error when exporting a large table with
> > blobs
> > > (largest blob is 180mb)
> > >
> > > error is:
> > > pg_dump: ERROR: out of memory
> > > DETAIL: Failed on request of size 1073741823.
> > > pg_dump: SQL command to dump the contents of table
> > "downloads" failed:
> > > PQendcopy() failed.
> > > pg_dump: Error message from server: ERROR: out of memory
> > > DETAIL: Failed on request of size 1073741823.
> > > pg_dump: The command was: COPY public.downloads ... TO
> stdout;
> > >
> > > if i try pg_dump with -d dump runs with all types (c,t,p),
> > but i cant
> > > restore (out of memory error or corrupt tar header at ...)
> > >
> > > how can i backup (and restore) such a db?
> > >
> > > kr
> > > Thomas
> > >
> > > ---------------------------(end of
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> > >
> > > http://archives.postgresql.org
> > >
> > >
> >
> >
>
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--
Marcelo Costa