Oracle Linux 7 is based on Fedora19, where the previous Oracle Linux 6, 5 are based on Red hat Enterprise. The switch from sysvinit to systemd is now part of the Enterprise Linux distributions. Below is just some simple commands to start/stop services
Starting and stopping service
#systemctl stop httpd
#systemctl start httpd
#systemctl restart httpd
#systemctl status httpd
Autostart service when boot, chkcofig replaced with
# systemctl start dbora.service
# systemctl enable dbora.service
List of services currently running
systemctl list-units --type service
I’ll update this post when new commands discovered.