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Oracle Unbreakable Enterprise Kernel

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What are the key benefits of Oracle’s Unbreakable Enterprise Kernel?

Based on the stable 2.6.32 Linux kernel and including optimizations from collaboration between Oracle’s Linux, Database, Middleware, and Hardware engineering teams, the Unbreakable Enterprise Kernel offers:

Read the Unbreakable Enterprise Kernel Data Sheet for more details on features.

How can you obtain the Unbreakable Enterprise Kernel?

There are two ways to get access to the Unbreakable Enterprise Kernel. Both are free.

  1. Since Unbreakable Enterprise Kernel is part of Oracle Linux anyone who has purchased Linux support can enjoy the benefits of Unbreakable Enterprise Kernel. For customers, Unbreakable Enterprise Kernel is delivered via Unbreakable Linux Network (ULN), so that installation on top of Oracle Linux 5 is quick and easy. To install Unbreakable Enterprise Kernel, customers can subscribe to a new Oracle Linux 5 Latest channel on the Unbreakable Linux Network (ULN).
  2. Anyone can download the new kernel via Oracle’s Public Yum server. See the instructions on or read the Unbreakable Enterprise Kernel technical white paper.

The Unbreakable Enterprise Kernel is supported under the current Oracle Unbreakable Linux Support Program . There is no change in pricing.

What are advantages of using Oracle Linux 5 with the Unbreakable Enterprise Kernel vs. RHEL6?

Unbreakable Enterprise Kernel is based on Linux kernel 2.6.32 and can be deployed today together with Oracle Linux 5 without reinstalling the entire operating system. Third party applications run unchanged and the installation of Unbreakable Enterprise Kernel can be easily and safely undone without affecting the operating system. So, you can take advantage of the 2.6.32 kernel without doing a complete re-install of the operating system and re-certification of your applications. In RHEL6, Red Hat has made thousands of changes on top of 2.6.32, none of which have been tested with Oracle software. Furthermore, deploying RHEL6 requires a complete reinstallation.

Oracle Linux 5 with Unbreakable Enterprise Kernel represents very high boost in Linux performance. Oracle made numerous improvements in Infiniband, RDS, as well as overall networking, I/O and NUMA enhancements to ensure that Linux runs comfortably on systems with many sockets and backed by high performance networking and storage infrastructure. Oracle’s largest and highest performance Exadata system now runs Oracle Linux 5 with Unbreakable Enterprise Kernel.

Unbreakable Enterprise Kernel represents a small set of changes on top of the stable 2.6.32 mainline kernel. These changes are focused on performance and stability and are tested around the clock in Oracle’s development and QA farms. On any given day, roughly 80,000 hours worth of tests are run with Oracle software on top of Unbreakable Enterprise Kernel.

Your existing applications run unchanged on Oracle Linux

Third party applications run unchanged and the installation of Unbreakable Enterprise Kernel can be easily and safely undone without affecting the operating system. RHEL6 implements a new set of system libraries, including glibc, demanding a complete re-validation and re-certification of all applications.

What is Oracle Unbreakable Linux?

Oracle Unbreakable Linux is a support program. It is not a distribution. Oracle Unbreakable Linux Support Program delivers enterprise-class support for Linux with premier backports, comprehensive management, cluster software, indemnification, testing and more, all at significantly lower cost. Oracle is committed to delivering high quality, comprehensive, and integrated support solutions to help ensure that organizations succeed with the Linux operating system.

Under the Oracle Unbreakable Linux Support Program, customers can receive full support for Oracle Linux running with either the Unbreakable Enterprise Kernel or the Red Hat Compatible Kernel.

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Technical Information: Unbreakable Enterprise Kernel, OCFS2 - Oracle Cluster File System for Linux.



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