max_connections limit

Hello,

I have a server running FreeBSD 4.7 and postgres 7.2.4 and when I set “max_connections” to a value greater than 47, I am unable to connect to the database server.  I need to be able to raise this number much higher because every site on this server runs postgres and at peak times this limit is reached and causes problems.  The server has 2 gigs of memory.  I would appreciate any suggestion.

Thank You,

Babak.