Oracle is pleased to announce Oracle Linux 9 general availability for Intel-64/AMD-64 (x86_64) and Arm (aarch64). This release includes the Unbreakable Enterprise Kernel Release 7 (UEK R7), also generally available today, along with the Red Hat Compatible Kernel (RHCK).
UEK R7, based on the mainline long term support (LTS) 5.15 release, offers the latest hardware support and is aligned with the Linux kernel community for more timely delivery of critical fixes and security updates. This release includes core scheduling, a security feature to help avoid side-channels attacks; adds CTF (C-type format) debug info data as part of the core kernel installation, allowing developers to debug their systems without having to install additional packages; and improves the default page size to 4 KB for the 64-bit Arm (aarch64) platform. UEK R7 is also available with Oracle Linux 8.
OpenSSL 3.0 in Oracle Linux 9 includes a number of new concepts and structural enhancements for application developers and users. OpenSSL 3.0's new FIPS module prevents non-FIPS algorithm use while the FIPS flag can be set in the kernel without the need to switch OpenSSL to FIPS mode.
File system enhancements with UEK R7 include Btrfs, with new asynchronous SSD trimming, parallel filesystem sync capabilities, and fewer checksum tree lookups. XFS supports Direct Access (DAX) operations, permitting direct access to byte-addressable persistent memory, helping avoid the latency of using traditional block I/O conventions. NFS introduces the "eager write" mount option to help reduce latency.
VirtualBox shared folder (vboxsf) is natively supported in UEK R7. This facilitates the sharing of folders between Oracle Linux guests and the host operating system with Oracle VM VirtualBox.
Why Switch? Oracle Linux is an ideal choice for Red Hat or CentOS users who need a stable, Red Hat Enterprise Linux (RHEL)-compatible alternative:
Customers with Oracle Linux Premier Support have access to many additional Linux programs including Oracle Ksplice, which is designed to update select, critical components of your Oracle Linux installation with important security patches without needing to reboot; as well as Oracle Linux Virtualization Manager, Oracle Linux Automation Manager and Engine, and Oracle Cloud Native Environment. Oracle Linux Premier Support is included with Oracle Cloud Infrastructure subscriptions at no additional cost.
Oracle Linux 9 installation software is now available as:
There are additional Oracle Linux resources such as scripts to build Oracle Linux images, virtual machine templates and Vagrant projects that can help you rapidly build and provision Oracle Linux instances for VirtualBox, KVM, Oracle Cloud or other clouds.
Documentation, Training and Hands-on Labs
A 19-year Oracle veteran, Simon Coter is an experienced product manager and open source community member. He leads a team responsible for several Oracle Linux and Virtualization offerings, including Oracle Linux, the Unbreakable Enterprise Kernel for Oracle Linux, Oracle Cloud Native Environment, Oracle Linux KVM, Oracle Linux Virtualization Manager, Oracle Linux Automation Manager, Gluster, Oracle VM, and VirtualBox. Prior to this, Simon was a technical consultant focused on project management, architectures definition, sizing and implementation, best practices, and technical references for customers.