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From: Chris <dmagick@gmail.com>
To: Craig A. James <cjames@modgraph-usa.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Postgres gets stuck
Date: Wed, 10 May 2006 10:51:41 +1000
Message-ID: <4461391D.2000800@gmail.com> (raw)
In-Reply-To: <446135F9.1060608@modgraph-usa.com>
References: <446135F9.1060608@modgraph-usa.com>


> This is a deadly bug, because our web site goes dead when this happens, 
> and it requires an administrator to log in and kill the stuck postgres 
> process then restart Postgres.  We've installed failover system so that 
> the web site is diverted to a backup server, but since this has happened 
> twice in one week, we're worried.
> 
> Any ideas?

Sounds like a deadlock issue.

Do you have query logging turned on?

Also, edit your postgresql.conf file and add (or uncomment):

stats_command_string = true

and restart postgresql.

then you'll be able to:

select * from pg_stat_activity;

to see what queries postgres is running and that might give you some clues.

-- 
Postgresql & php tutorials
http://www.designmagick.com/



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