how many connections can i use????

Hello there!

I have a problem with the number of connections on postgres 7.2.1, yeah
is a quite older :-)
but i have it running on SCO OpenServer 5.0.7 and tried to change
the number of connections above 100 but,
i only got 100 sometimes 101 but no more.

I changed the parameters line of postmaster to "-N 128 -B 256" , "
-N 256 -B 512", etc; even modified the max_connections and
shared_buffers on postgresql.conf but i only got 100 connections :-(

I hope the following info, could help to solve the above mentioned:

Operative system: SCO OpenServer 5.0.7

SHMMAX= 106340761
SHMMIN= 1
SHMALL= 512
SHMSEG= 6
SHMMNI= 100
SEMMNI= 256
SEMMSL= 150
SEMMAP= 8192
SEMVMX= 32767

memsize: 1063407616

thanks in advance, and regards from Mexico.
--
Di NO a la pirateria, usa software libre.
Say NO to piracy, use free(dom) software.