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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Евгений Селявка <evg.selyavka@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: postgresql 9.1 out of memory
Date: Sat, 26 Oct 2013 09:59:27 -0400
Message-ID: <11526.1382795967@sss.pgh.pa.us> (raw)
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=?KOI8-R?B?5dfHxc7JyiDzxczR18vB?= <evg.selyavka@gmail.com> writes:
> today my database crashed with out of memory

This is probably why:

> work_mem = 2GB

Don't do that.  It's especially silly to have this setting higher than
maintenance_work_mem --- should be the other way 'round.

I would also question your setting of shared_buffers.  The traditional
advice is to dedicate maybe a quarter of RAM to shared_buffers, not
three-quarters.

For more info try

https://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server

			regards, tom lane


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