Unbreakable Enterprise Kernel

The Unbreakable Enterprise Kernel (UEK) is a Linux kernel built by Oracle and supported via Oracle Linux support. Its focus is performance, stability, and minimal backports by tracking the mainline source code as closely as is practical. UEK is well-tested and used to run Oracle's Engineered Systems, Oracle Cloud Infrastructure, and large enterprise deployments for Oracle customers.

Note that UEK R2 is not supported or available for Oracle Linux 7.

Note that UEK R5 is not supported or available for Oracle Linux 6.

UEK R6 is only available for Oracle Linux 7 and Oracle Linux 8.

Notices

The notices provided below, pertain to changes and updates to operating system behavior that may fall outside of standard release cycles, or which may apply generally across releases and update levels.

Unbreakable Enterprise Kernel Release 6

UEK R6 is based on the upstream 5.4.17 kernel release with additional patches and enhancements.

Unbreakable Enterprise Kernel Release 5

UEK R5 is based on the upstream 4.14.35 kernel release with additional patches and enhancements.

Unbreakable Enterprise Kernel Release 4

UEK R4 is based on the upstream 4.1.12 kernel release with additional patches and enhancements.

Unbreakable Enterprise Kernel Release 3

UEK R3 is based on the upstream 3.8.13 kernel release with additional patches and enhancements.

Unbreakable Enterprise Kernel Release 2

UEK R2 is based on the upstream 2.6.39 kernel release with additional patches and enhancements.