Release 2 and Release 3 of the Oracle Unbreakable Enterprise Kernel for Linux are supported in Software Release 1.5.2 and later for the Sun Fire X4470.
Oracle Unbreakable Enterprise Kernel Release 2 for Linux: Release 2 is installed by default on Oracle Linux 5.9, 5.10, 6.3, and 6.4, and can be installed on Red Hat Enterprise Linux 5.9, 5.10, and 6.4. Release 2 is based on the 3.0.16 mainline Linux kernel and contains improvements and new features that have been incorporated into mainline Linux since the first version of the kernel.
For the latest information about operating system compatibility and pointers to installation information, see the Oracle Unbreakable Enterprise Kernel Release 2 Release Notes at:
https://oss.oracle.com/ol6/docs/RELEASE-NOTES-UEK2-en.html
Oracle Unbreakable Enterprise Kernel Release 3 for Linux: Release 3 is installed by default on Oracle Linux 6.5 and Oracle Linux 7, and can be installed on Oracle Linux 6.4 and Red Hat 6.4 and 6.5. Release 3 is based on the 3.0.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, see the Oracle Unbreakable Enterprise Kernel Release 3 Release Notes at: