3.3 Switching an Oracle Linux 6 System to UEK R3 (Oracle Yum Server)

If your system is not registered with ULN, you can obtain most of the packages for Unbreakable Enterprise Kernel Release 3 (UEK R3) from Oracle Yum Server by subscribing it to additional repositories.

Before you begin:

To Switch a System to UEK R3:

  1. Log in as root on the system.

  2. Change directory to /etc/yum.repos.d.

    # cd /etc/yum.repos.d

    This assumes that yum on your system is configured to find repository files in the default /etc/yum.repos.d directory.

  3. Download the Oracle Linux 6 repository configuration file, https://yum.oracle.com/public-yum-ol6.repo.

    For example:

    # wget https://yum.oracle.com/public-yum-ol6.repo

    The /etc/yum.repos.d directory is updated with the repository configuration file.

  4. Enable the required repositories by editing the public-yum-ol6.repo file.

    You enable or disable repositories in the file by setting the value of the enabled directive to 1 or 0 as required.

    The kernel image and user-space packages are available on the following Oracle Yum Server repositories:




    All packages released for Oracle Linux 6 (x86_64) including the latest errata packages.


    Latest packages for Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6.

    Contains the kernel-uek*, dtrace-modules-*, libdtrace-*, and uname26 packages.


    Latest OpenFabrics Enterprise Distribution (OFED) supporting tools for the Unbreakable Enterprise Kernel (UEK) on Oracle Linux 6 (x86_64).

    As a minimum, you should enable the ol6_latest and the ol6_UEKR3_latest repositories.


    The DTrace and DRBD utility packages are not available on Oracle Yum Server.

    Because you are switching to the latest UEK kernel, you can disable the previous UEK R2 (ol6_UEK_latest) repository.

    In the following example, the ol6_UEKR3_latest repository is enabled, and the ol6_UEK_latest repository is disabled:

    name=Latest Unbreakable Enterprise Kernel for Oracle Linux $releasever ($basearch)
    name=Latest Unbreakable Enterprise Kernel for Oracle Linux $releasever ($basearch)
  5. Upgrade all packages on the system, including kernel packages.

    # yum update

    By default, the boot manager automatically enables the most recent kernel version so you do not need to change your GRUB configuration.

  6. Reboot the system.

    # shutdown -r now