oracle/linux installation quickie questions

Hi,

I'm installing Oracle on Linux. I'm trying to follow the installation docs.

In section "Configure Linux Kernel for Oracle" :
"2.Set the kernel parameters corresponding to:

              maximum size of a shared memory segment (SHMMAX)
              maximum number of shared memory segments in the system
(SHMMNI)
              maximum number of shared memory segments a user process
can
              attach (SHMSEG)
              maximum amount of shared memory that can be allocated
system-wide
              (SHMMNS) "

The docs don't actually say how to set these kernel parameters. Anyone?

In "Create Mount Points", the following table:
"Software Mount Point Database Mount Points

 /u01                                                /u02
                                                        /u03
                                                        /u04"

OK, so these are the mount points, but don't you have to specify a device when you use the mount command?
Could someone explain it a bit better than the docs please?

Thanks very much,

• Kev