Hi, I've noticed that if I set my SHMMAX to 256 * 1024 * 1024 (268435456) and my shared_buffers value in postgresql.conf to 256MB the server fails to start. I managed to find a tipping point: 249MB seems to be too much and 248MB seems to be okay. Could someone explain what I'm missing here? I thought the shared_buffers could be anything up to SHMMAX? Thanks in advance Thom -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general