Setting ulimits on Solaris 11

I am no solaris administrator, but am setting up a new EBusiness 12.1.3 environment on Solaris 11 to do a test upgrade to EBusiness 12.2. According to documentation I must set the ulimits, but I am not sure as to which process to follow whether through the /etc/system file or with projects. And further more, I also do not know which values. Currently with the install I am seeing the following values when running ulimit -a as the database user:

-bash-4.1$ ulimit -a

core file size          (blocks, -c) unlimited

data seg size           (kbytes, -d) unlimited

file size               (blocks, -f) unlimited

open files                      (-n) 256