Thank you for your replies, I've reverted httpd.conf to StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 256 and have changed postgresql.conf to: shared_buffers = 512MB # for Apache + my game daemon + cron jobs max_connections = 260 Do you think I need to reconfigure CentOS 5.6 for the bigger shared memory too or will it adapt by itself? I'm still studying the docs. Also I've installed the pgbouncer package and will read on it too, but I already wonder what is its behaviour if configured for 100 connections and a 101st comes in? ; total number of clients that can connect max_client_conn = 100 default_pool_size = 20 Regards Alex # rpm -qa|grep -i pg perl-DBD-Pg-1.49-2.el5_3.1 pgbouncer-1.3.4-1.rhel5 pgdg-centos-8.4-2 php53-pgsql-5.3.3-1.el5_6.1 postgresql-8.4.8-1PGDG.rhel5 postgresql-devel-8.4.8-1PGDG.rhel5 postgresql-libs-8.4.8-1PGDG.rhel5 postgresql-server-8.4.8-1PGDG.rhel5 # uname -rm 2.6.18-238.9.1.el5 x86_64 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general