The software described in this documentation is either in Extended Support or Sustaining Support. See for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

3.2.1 About the Unbreakable Linux Network

You have the option of registering a system with ULN when you install Oracle Linux 6 on a system. To register with ULN after installation, use the uln_register command.

To obtain Oracle Linux updates from ULN, you must have an Oracle Linux support subscription. For more information about ULN, see

From Oracle Linux 6 Update 5, ULN registration subscribes a server to the Oracle Linux 6 latest channel and either the UEK R2 latest channel (ol6_i386_UEK_latest) for i386 or the UEK R3 latest channel (ol6_UEKR3_latest) for x86-64.

If you want to install UEK R3 on a ULN-registered x86-64 system that is currently running UEK R2, manually subscribe the system to the UEK R3 latest channel (ol6_UEKR3_latest) and unsubscribe the server from the UEK R2 latest channel (ol6_x86_64_UEK_latest) before running yum update.

ULN also provides channels for Oracle-specific software packages such as Oracle's ASMlib user-space package and the Oracle Instant Client. To enable access to these packages, log in to ULN and subscribe your system to the Oracle Software channel.