This are the currently active settings, the oracle-database-server-12cR2-preinstall.rpm delivers on Oracle Linux 7. Maybe it’s useful for you when setting up Oracle 12.2 on SUSE / SLES where you are on your own.
Maybe you also want to add Huge Pages:
# Performing Databases Huge Page Settings # for SGA size 200GB and huge page size of 2MB each vm.nr_hugepages = 102401 # oracle-database-server-12cR2-preinstall setting for fs.file-max is 6815744 fs.file-max = 6815744 # oracle-database-server-12cR2-preinstall setting for kernel.sem is '250 32000 100 128' kernel.sem = 250 32000 100 128 # oracle-database-server-12cR2-preinstall setting for kernel.shmmni is 4096 kernel.shmmni = 4096 # oracle-database-server-12cR2-preinstall setting for kernel.shmall is 1073741824 on x86_64 kernel.shmall = 1073741824 # oracle-database-server-12cR2-preinstall setting for kernel.shmmax is 4398046511104 on x86_64 kernel.shmmax = 4398046511104 # oracle-database-server-12cR2-preinstall setting for kernel.panic_on_oops is 1 per Orabug 19212317 kernel.panic_on_oops = 1 # oracle-database-server-12cR2-preinstall setting for net.core.rmem_default is 262144 net.core.rmem_default = 262144 # oracle-database-server-12cR2-preinstall setting for net.core.rmem_max is 4194304 net.core.rmem_max = 4194304 # oracle-database-server-12cR2-preinstall setting for net.core.wmem_default is 262144 net.core.wmem_default = 262144 # oracle-database-server-12cR2-preinstall setting for net.core.wmem_max is 1048576 net.core.wmem_max = 1048576 # oracle-database-server-12cR2-preinstall setting for net.ipv4.conf.all.rp_filter is 2 net.ipv4.conf.all.rp_filter = 2 # oracle-database-server-12cR2-preinstall setting for net.ipv4.conf.default.rp_filter is 2 net.ipv4.conf.default.rp_filter = 2 # oracle-database-server-12cR2-preinstall setting for fs.aio-max-nr is 1048576 fs.aio-max-nr = 1048576 # oracle-database-server-12cR2-preinstall setting for net.ipv4.ip_local_port_range is 9000 65500 net.ipv4.ip_local_port_range = 9000 65500