Release 4 of the Oracle Unbreakable Kernel (UEK) for Linux is installed by default on Oracle Linux 6.9 and 7.3 OS and can be installed on Red Hat Enterprise Linux 6.9 and 7.3 OS. Oracle Unbreakable Kernel Release 4 contains improvements and new features that have been incorporated into mainline Linux since Release 3 of the Oracle Unbreakable Kernel.
For the latest information about operating system compatibility and pointers to installation information, refer to Oracle Unbreakable Enterprise Kernel Release 4 Release Notes at https://docs.oracle.com/cd/E52668_01/E69348/html/index.html#.