Oracle Linux 6.6 is an enterprise-class distribution based on the recently-released Red Hat Enterprise Linux 6.6. Oracle Linux 6 Update 6 ships with three sets of kernel packages: Unbreakable Enterprise Kernel Release 2 for x86; Unbreakable Enterprise Kernel Release 3 for x86_64; Red Hat Compatible Kernel for x86 and x86_64. By default, both the Unbreakable Enterprise Kernel and the Red Hat Compatible Kernel are installed. UEK R3 includes the following major improvements over UEK R2: integrated DTrace support in the UEK R3 kernel and user-space tracing of DTrace-enabled applications; device mapper support for an external, read-only device as the origin for a thinly-provisioned volume....

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.