I cant start instance - errors

Hello I try to start instance but it seems I got problem. I did change in /etc/system
accroding to some advice but nothing

set shmsys:shminfo_shmmax=1723112736

Look:
ORA-27102: out of memory
SVR4 Error: 12: Not enough space

Additional:
Hardware SUN 220
Solaris 8 (with patches)
2 Processors
4G RAM

set shmsys:shminfo_shmmax=1723112736
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=200
set shmsys:shminfo_shmseg=20
set semsys:seminfo_semmni=100
set semsys:seminfo_semmsl=256
set semsys:seminfo_semmns=1200
set semsys:seminfo_semopm=100
set semsys:seminfo_semvmx=32767