Re: too many clients

From: Paul Thomas <paul(at)tmsl(dot)demon(dot)co(dot)uk>
To: "pgsql-jdbc (at) postgresql (dot) org" <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: too many clients
Date: 2003-11-04 17:14:35
Message-ID: 20031104171435.C25432@bacon
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On 04/11/2003 15:03 Glenn Holmer wrote:
> Paul Thomas wrote:
>>
>> On 04/11/2003 13:34 Glenn Holmer wrote:
>>
>>> What does this mean and how do I diagnose it?
>>>
>>> java.sql.SQLException: FATAL: Sorry, too many clients already
>>>
>>> Not all the Postgres databases on this machine are experiencing this.
>>> One of them is using pooling with Tomcat and the JNDI interface.
>>>
>>
>> You've probably reached max_connections. Try upping the value in your
>> postgresql.conf. You'll need to restart the back-end for it to take
>> effect.
>
> This is on SuSE 8.2, which provides a file /etc/sysconfig/postgresql;
> this is where we put "-i" for TCP/IP. Since that's a postmaster flag,
> I'm probably OK with putting the max_connections here as well? Looks
> like it would be, e.g. "-i -N 64 -B 128"? (space after -N and -B?)

I don't use Suse but I'd guess that the file contains command-line
parameters to the postmaster so you should be OK.

Unless your machine has only got about 16-MB RAM, I'd increase buffers
(-B) to at least 1000 for performance reasons and max_connections (-N) to
100.

--
Paul Thomas
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