Oracle Linux 7.0 is a distribution rebuilt from source code of Red Hat Enterprise Linux 7, but featuring a custom "unbreakable" kernel. Oracle Linux 7 offers the latest innovations and improvements to support customers and partners in developing and deploying business critical applications across the data center and into the cloud. Features include: Btrfs Oracle Linux 7; XFS; Linux Containers (LXC); DTrace; Ksplice for zero-downtime kernel security updates and bug fixes; Xen enhancements; Unbreakable Enterprise Kernel (UEK) 3; systemd, a new service and system manager; GRUB 2 as the default bootloader with support for additional firmware types, such as UEFI; support for in-place upgrades from Oracle Linux 6.5 to Oracle Linux 7.
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.