Hi, We have Oracle 10g RAC database on Solaris 10. We have situation wherein processes parameter need to be increased from 180 to 2500 on each node. My question would be what is the kernel parameter is associated with Oracle processes parameter ? Do we need to change any kernel parameter with this change to prevent any issues ? If yes what's the maximum limit ? My current /etc/system shows as below. set semsys:seminfo_semmni=100 set semsys:seminfo_semmns=1024 set semsys:seminfo_semmsl=256 set semsys:seminfo_semvmx=32767 set shmsys:shminfo_shmmax=4294967295 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=100 set shmsys:shminfo_shmseg=10 Physical Memory of Solaris box is 64GB. Regards, Mahesh.G