To: "Delao, Darryl W" <ddelao@ou.edu>
Cc: pgsql-docs@postgresql.org
Subject: Re: Compiling postgresql 
In-reply-to: <FC0CEBD77311DA499A67ADB355A24FA2546B40@mail4.oulan.ou.edu> 
References: <FC0CEBD77311DA499A67ADB355A24FA2546B40@mail4.oulan.ou.edu>
Comments: In-reply-to "Delao, Darryl W" <ddelao@ou.edu>
	message dated "Thu, 06 Mar 2003 12:16:35 -0600"
Date: Thu, 06 Mar 2003 15:59:23 -0500
Message-ID: <18084.1046984363@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>

"Delao, Darryl W" <ddelao@ou.edu> writes:
> never had to compile postgres before.  My main concern is what would I need
> to change other than the user limit to make postgres to where it would
> accept connections higher than 512 and what steps are involved in the
> compiling process.  Right now, if I try to set the user limit above 512,
> postgres simply will not start.  Any help is greatly appreciated.  

You mean 512 concurrent connections?  It sounds to me like you are
running into kernel-level limits on amount of shared memory or number
of semaphores.  But without seeing the error message the postmaster
puts out, it's hard to be sure.  See the discussion about "Managing
Kernel Resources" in the PG Administrator's Guide.

There has been no compile-time limit on number of connections for
several releases now, so I doubt you need to recompile.  (If you do,
you are overdue for an update.)

			regards, tom lane