6.5 not running on Solaris 2.5.1 SPARC

Hello:
I'm using:

uname -a:
SunOS ns2 5.5.1 Generic_103640-27 sun4u sparc SUNW,Ultra-1

Postgres compiles fine, but:

[7]ns2:/usr/local/pgsql>id
uid=65541(pgsql) gid=65536(pgsql)
[8]ns2:/usr/local/pgsql>postmaster -i
IpcMemoryCreate: shmget failed (Invalid argument) key=5432001,
size=1073152, permission=600
FATAL 1: ShmemCreate: cannot create region

truss shows:

truss postmaster -i:
[...]
open("/usr/local/pgsql/data/base/template1/pg_class", O_RDONLY) = 3
lseek(3, 0, SEEK_CUR) = 0
close(3) = 0
open("/usr/local/pgsql/data/PG_VERSION", O_RDONLY) = 3
read(3, " 6 . 5\n", 4) = 4
close(3) = 0
stat("/usr/local/pgsql/bin/postgres", 0xEFFFF948) = 0
getuid() = 65541 [65541]
open("/etc/netconfig", O_RDONLY) = 3
fstat(3, 0xEFFFF2C0) = 0
brk(0x00271CB0) = 0
brk(0x00275CB0) = 0
ioctl(3, TCGETA, 0xEFFFF24C) Err#25 ENOTTY
read(3, " #\n # T h e " N e t".., 8192) = 1064
read(3, 0x00271CBC, 8192) = 0
lseek(3, 0, SEEK_CUR) = 1064
lseek(3, 0, SEEK_SET) = 0
read(3, " #\n # T h e " N e t".., 8192) = 1064
read(3, 0x00271CBC, 8192) = 0
lseek(3, 0, SEEK_CUR) = 1064
close(3) = 0
open("/dev/tcp", O_RDWR) = 3
ioctl(3, I_PUSH, "sockmod") = 0
ioctl(3, I_STR, 0xEFFFF8C0) = 0
ioctl(3, I_SETCLTIME, 0xEFFFF974) = 0
ioctl(3, I_SWROPT, 0x00000002) = 0
sigfillset(0xEF69692C) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF964, 0xEFFFF954) = 0
ioctl(3, I_STR, 0xEFFFF7D8) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF954, 0xEFFFF930) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF8D0, 0xEFFFF944) = 0
ioctl(3, I_STR, 0xEFFFF8D0) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF944, 0x00000000) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF778, 0xEFFFF7F0) = 0
ioctl(3, I_STR, 0xEFFFF778) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF7F0, 0x00000000) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF900, 0xEFFFF994) = 0
ioctl(3, I_STR, 0xEFFFF900) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF994, 0x00000000) = 0
open("/dev/ticotsord", O_RDWR) = 4
ioctl(4, I_PUSH, "sockmod") = 0
ioctl(4, I_STR, 0xEFFFF8C0) = 0
ioctl(4, I_SETCLTIME, 0xEFFFF974) = 0
ioctl(4, I_SWROPT, 0x00000002) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF964, 0xEFFFF954) = 0
ioctl(4, I_STR, 0xEFFFF7D8) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF954, 0xEFFFF930) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF8D0, 0xEFFFF944) = 0
ioctl(4, I_STR, 0xEFFFF8D0) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF944, 0x00000000) = 0
ioctl(4, (('S'<<8)|242), 0xEFFFFA6A) = 0
stat("/tmp/.s.PGSQL.5432", 0xEFFFF804) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF778, 0xEFFFF7F0) = 0
ioctl(4, I_STR, 0xEFFFF778) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF7F0, 0x00000000) = 0
sigprocmask(SIG_BLOCK, 0xEFFFF900, 0xEFFFF994) = 0
ioctl(4, I_STR, 0xEFFFF900) = 0
sigprocmask(SIG_SETMASK, 0xEFFFF994, 0x00000000) = 0
chmod("/tmp/.s.PGSQL.5432", 0777) = 0
shmget(5432010, 120, 0700|IPC_CREAT) = 900
shmat(900, 0, 0) = 0xEF7A0000
shmget(5432001, 1073152, 0600|IPC_CREAT) Err#22 EINVAL
IpcMemoryCreate: shmget failed (Invalid argument) key=5432001,
size=1073152, permission=600write(2, " I p c M e m o r y C r e".., 91)
= 91

write(2, "\n", 1) = 1
FATAL 1: ShmemCreate: cannot create region
write(2, " F A T A L 1 : S h".., 44) = 44
shmdt(0xEF7A0000) = 0
shmctl(900, 10, 0) = 0
unlink("/tmp/.s.PGSQL.5432") = 0
lseek(0, 0, SEEK_CUR) = 71606
_exit(0)

Any ideas? Please answer to me because I'm not in the list.

Thanks in advance!

Fernando P. Schapachnik
Administración de la red
VIA Net Works Argentina SA
Diagonal Roque Sáenz Peña 971, 4º y 5º piso.
1035 - Capital Federal, Argentina.
(54-11) 4323-3333
http://www.via-net-works.net.ar