Release 3 of the Oracle Unbreakable Enterprise Kernel for Linux is supported in this release of the server software. Release 3 is installed by default on Oracle Linux 6.6 and 7.1 OS and can be installed on Red Hat Enterprise Linux 6.6 and 7.1 OS. Release 3 is based on the 3.8.x mainline Linux kernel and contains improvements and new features that have been incorporated into mainline Linux since Release 2 of the kernel.
For the latest information about operating system compatibility and pointers to installation information, refer to corresponding release notes at:
http://docs.oracle.com/cd/E37670_01/index.html for Linux 6, and https://docs.oracle.com/cd/E52668_01/index.html for Oracle Linux 7
Supported Operating Systems in Oracle Server X5-8 Product Notes