Re: out of memory in backup and restore - Mailing list pgsql-admin

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.markus@proventis.net
> <mailto:t.markus@proventis.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.markus@proventis.net
>     <mailto:t.markus@proventis.net>
>     > <mailto: t.markus@proventis.net
>     <mailto:t.markus@proventis.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
>     >
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