Immediate answer I can give for
SEMMSL value......
if it is less than your processes values set in init.ora file..
we will find the interesting results.....meaning
1.allocation of more than one semaphore per database...(ipcs command)
2.If you have multy instances in same server...other instances
will not startup giving error...
ORA-27300: OS system dependent operation:semctl failed with status: 22
ORA-27301: OS failure message: Invalid argument
ORA-27302: failure occurred at: sskgpwrm1..

so the value should be always processes value+4..
Thanks.
Thanigaivasan.