Once you have the ISO file, you need to make it bootable.
Even though you used a versioned ISO, there may be security fixes available.
sudo dnf update -y
To create a bootable USB drive, follow these steps:
Oracle hosts all releases on their public yum server. For version 8.5, go to:
Direct download links resemble:
| User type | Experience |
|-----------|------------|
| Sysadmin | Almost identical to RHEL. Oracle adds oracle-database-preinstall and oracle-rdbms-server-12cR1-preinstall RPMs – useful for DBAs. |
| Developer | Good – EPEL works, Docker/Podman supported. Ksplice for zero‑downtime kernel updates (paid). |
| Home / lab user | Free (GPL), no registration needed. But community smaller than CentOS/Alma/Rocky. Some docs assume you have Oracle support. |
| Enterprise | Great if you use Oracle DB, Oracle Cloud, or want 24×7 support from Oracle. |
⚠️ Note – The ISO alone works standalone; you do not need an Oracle Support contract to install or get errata (public yum repos exist).
The ISO supports:
Once you have the Oracle Linux 8.5 ISO, you need to mount it onto physical media or a virtual drive.
Overview
How to obtain the ISO (official)
Checksum and verification
Installation basics
Notable changes and updates in 8.5 (high level)
Using the ISO for cloud or container images
Licensing and support
Quick troubleshooting pointers
Further reading (suggested search terms)
Related search suggestions (for further reading) "suggestions":["suggestion":"Oracle Linux 8.5 release notes","score":0.9,"suggestion":"Download Oracle Linux 8.5 ISO","score":0.9,"suggestion":"Oracle Linux UEK vs RHCK","score":0.7]
Oracle Linux 8 Update 5 (8.5) is a versatile operating environment designed for modern data centers and cloud infrastructures. Based on Red Hat Enterprise Linux (RHEL) 8.5, it is 100% application-binary compatible while offering unique performance and security enhancements through the Unbreakable Enterprise Kernel (UEK)
Below is a complete breakdown of the key features and capabilities of the Oracle Linux 8.5 ISO. Core Kernel & Performance
Oracle Linux 8.5 offers two kernel choices to balance stability and bleeding-edge performance: Unbreakable Enterprise Kernel (UEK) Release 6
: The default kernel (5.4-based) optimized for Oracle hardware and software. It includes enhancements for NVMe, file systems like Btrfs, and security. Red Hat Compatible Kernel (RHCK)
: Provides identical behavior to the RHEL kernel for users requiring strict upstream parity. eBPF Support
: Full support for Extended Berkeley Packet Filter (eBPF), allowing for high-performance system tracing, networking, and security monitoring without modifying the kernel. Security & Compliance Kernel Lockdown
: Prevents unauthorized modifications to the running kernel image, even by the root user, reducing the attack surface. OpenSCAP Enhancements
: Updated security profiles and scanning tools to ensure the system meets industry standards like PCI-DSS and STIG. System-Wide Crypto Policies
: Centrally manage cryptographic algorithms across all applications (e.g., SSH, TLS, IPsec) with a single command. NSS Support for TLS 1.3
: Improved security for web communications and internal services. Developer & Application Tools Oracle Linux 8.5 uses the Application Streams (AppStream)
model, allowing different versions of software to run on the same OS: Updated Languages
: Includes the latest versions of Java (OpenJDK 17), Python 3.9, PHP 7.4, and Ruby 3.0. Database Support oracle linux 8.5 iso
: Optimized out-of-the-box for Oracle Database installations with the oracle-database-preinstall-8c GCC Toolset 11
: Provides the latest compiler features for C and C++ developers. Management & Automation Cockpit Web Interface
: A powerful, browser-based dashboard for managing servers, monitoring performance, and configuring storage or networking. Ansible Integration
: Native support for automation playbooks to streamline large-scale deployments. Dnf (YUM v4)
: A faster, more efficient package manager with improved dependency resolution. Virtualization & Containers Podman, Buildah, and Skopeo
: A daemon-less container engine suite that replaces Docker, allowing for more secure, rootless container management. KVM Support
: Updated virtualization features for hosting high-performance virtual machines. Availability & Support Zero-Downtime Patching : Available via Oracle Ksplice
, which allows you to apply critical kernel and user-space patches without rebooting the system (requires a support subscription). Free to Download : The ISO is free to download, use, and distribute via the Oracle Software Delivery Cloud Oracle Linux yum server If you're planning an installation, I can help you with: hardware requirements installation steps using the Anaconda installer switch from RHEL or CentOS to Oracle Linux 8.5 seamlessly
Oracle Linux 8.5 is an enterprise-class operating system based on Red Hat Enterprise Linux (RHEL) 8.5, designed for high-performance and mission-critical workloads
. Since its release, it has provided a robust platform for on-premises, hybrid, and cloud deployments. Key Features of the 8.5 Release Dual Kernel Options : Oracle Linux 8.5 ships with two kernel choices: Unbreakable Enterprise Kernel (UEK) Release 6
: Based on the 5.4 mainline kernel, optimized for performance and stability. Red Hat Compatible Kernel (RHCK)
: Based on the 4.18 kernel, ensuring 100% binary compatibility with RHEL 8.5. New Kernel Support : Starting with 8.5, UEK Release 7 became available as an optional installation. Enhanced Security
: Includes improved compliance and automation tools, though FIPS mode is not enabled by default in standard platform images. Automation & Management
: Features enhancements in container management and developer tools to streamline IT operations. Oracle Help Center Available ISO Image Types You can download several types of ISOs directly from the Oracle Linux Yum Server without registration: Oracle Linux Yum Server
: Contains the complete set of packages required for a standard on-premises installation. : A minimal image used for network-based installations. UEK Boot ISO Once you have the ISO file, you need to make it bootable
: Specifically designed to boot a system using the Unbreakable Enterprise Kernel for specialized hardware. Source ISO
: Contains the source code for all packages included in the release. Oracle Linux Yum Server System Requirements & Installation Oracle Linux ISOs | Oracle, Software. Hardware. Complete.
The Oracle Linux 8.5 ISO is a free, enterprise-grade operating system image based on the Red Hat Compatible Kernel (RHCK). Released in January 2022, it is part of the Oracle Linux 8 series which continues to receive support until July 2029. 💿 ISO Download Sources
You can download the ISO images without registration from several official Oracle channels:
Oracle Linux Yum Server: This is the fastest way to get recent ISOs directly.
Oracle Software Delivery Cloud: Provides a comprehensive list of all versions and architectures (x86_64 and aarch64).
Microsoft App Store: Specifically for the Windows Subsystem for Linux (WSL), allowing you to run Oracle Linux 8.5 directly on Windows. 🛠️ Types of ISO Images Available
Depending on your installation needs, Oracle provides different ISO variants: ISO Type Full ISO
Recommended for most on-premises installs; includes all repositories for offline setup. UEK Boot ISO
Used for installations requiring the Unbreakable Enterprise Kernel (UEK), such as when using the Btrfs file system. Boot ISO
A minimal image for network-based installations using the standard kernel (RHCK). Source ISO
Contains the source code for the software packages included in the release.
💡 Key Update: Starting with Oracle Linux 8.5, the Unbreakable Enterprise Kernel Release 7 (UEK R7) became an optional installation choice, though UEK R6 remained the default for this specific version. If you'd like, I can help you with:
Step-by-step installation instructions for a virtual machine Commands to verify the checksum of your downloaded ISO
Differences between RHCK and UEK kernels to help you choose the right boot image Oracle Linux ISOs | Oracle, Software. Hardware. Complete. To create a bootable USB drive, follow these