CentOS
https://www.centos.org/docs/5/html/
https://wiki.centos.org/
https://wiki.centos.org/HowTos/Oracle12onCentos7
https://docs.oracle.com/database/121/index.html

CentOS version
cat /etc/centos-release
hostnamectl
rpm --query centos-release

CentOS setup
# pciutils (for running lspci)
# xorg-x11-server-utils (for running xrandr)
yum install -y nano mlocate wget zip unzip xorg-x11-drv-vesa pciutils xorg-x11-server-utils

wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
# --nogpgcheck Run with GPG signature checking disabled
yum localinstall -y epel-release-latest-7.noarch.rpm
# or directly:
yum install epel-release

grep -nri rhgb /etc/
sed -i s/"rhgb quiet"/"text"/ /etc/default/grub

the only one working (after second boot) with CentOS on VMWare 12.1.0 on ASRock with Intel N3150
yum -y groups install "MATE Desktop"
echo "exec /usr/bin/mate-session" > ~/.xinitrc
startx