Oracle Linux 5.11 is a distribution rebuilt from source code of Red Hat Enterprise Linux 5.11, but shipping with a custom "unbreakable" kernel. This release includes the Unbreakable Enterprise Kernel Release 2 (2.6.39-400), Oracle's recommended kernel for Oracle Linux. Oracle Linux can be downloaded, used and distributed free of charge and updates and errata are freely available. For support, you are free to decide which of your systems you want to obtain a support subscription for, and at what level each system should be supported.

About Oracle Linux

Oracle Linux is an enterprise-class Linux distribution supported by Oracle and built from source packages for Red Hat Enterprise Linux (RHEL). Some of the special features of Oracle Linux include a custom-build and rigorously-tested Linux kernel called "Oracle Unbreakable Kernel", tight integration with Oracle's hardware and software products including most database applications, and "zero downtime patching" - a feature that enables administrators to update the kernel without a reboot