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.

Chapter 8 Runtime Environment

Although Oracle Linux is similar to a UNIX-based operating system, there are some fundamental differences in its runtime environment. This chapter discusses some differences that you might encounter.