SGA limit on Solaris x86

Dear all,

I install Solaris 10 x86 and Oracle 10g. I find that oracle can only use 4G memory maximum for SGA. Would anyone know what I miss in order to increase to 8G or more?

Thanks in advance.

--
Johnson Chow


==============================================================

/etc/system:
set shmsys:shminfo_shmmax=8589934591


==============================================================

$ projects -l
user.oracle
        projid : 100
        comment: ""
        users  : oracle
        groups : (none)
        attribs: project.max-sem-ids=(priv,100,deny)
                 project.max-sem-nsems=(priv,256,deny)
                 project.max-shm-ids=(priv,100,deny)
                 project.max-shm-memory=(priv,17179869184,deny)


==============================================================

$ top
   PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
   820 oracle     1  59    0 4215M   18M sleep    0:00  0.02% oracle
   837 oracle     1  59    0 4215M   25M sleep    0:00  0.01% oracle
   831 oracle    11  59    0 4216M   23M sleep    0:00  0.01% oracle
   839 oracle     1  59    0 4216M   32M sleep    0:00  0.00% oracle
   841 oracle     1  59    0 4214M   17M sleep    0:00  0.00% oracle


==============================================================

SQL> show sga;

Total System Global Area 4294967296 bytes
Fixed Size                  2026256 bytes
Variable Size             805307632 bytes
Database Buffers         3472883712 bytes
Redo Buffers               14749696 bytes