The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

2.2.5 Software Selection

If you choose to customize the software to be installed on a system, you can select or deselect packages from the default set. For example, the basic server configuration does not install the Gnome and KDE desktop software and the X Windows System packages from the Desktops section. Additional packages that you might want to install on a server system are available under the Servers, Web Services, Databases, and other section headings.