[Oracle RAC 12.1 Installation on Oracle Linux 6.7 (ISCSI + ASM)]: Pre-configuration settings

Some comments on the next 2 commands - the 1st creates a backup of the /etc/selinux/config file, and the 2nd replaces the SELINUX parameter value from enforcing to disabled

# cp /etc/selinux/config /etc/selinux/config.bkp
# sed -i.gres "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

The next 2 commands - the 1st creates a backup of the file, changes the timeout value from 5 to 0

# cp /etc/grub.conf /etc/grub.conf.bkp
# sed -i.gres "s/timeout=5/timeout=0/g" /etc/grub.conf

Disable firewall

# service iptables stop

Prevent firewall from starting at OS boot

# chkconfig iptables off