Complete operating system configuration requirements and checks for Linux operating systems before you start installation.

You must meet the minimum requirements such as the operating system distribution, packages, and other software requirements for this release before you start an Oracle Database or Oracle Grid Infrastructure installation.

• Guidelines for Linux Operating System Installation
  Operating system guidelines to be aware of before proceeding with an Oracle installation.
• Reviewing Operating System Security Common Practices
  Secure operating systems are an important basis for general system security.
• About Installation Fixup Scripts
  Oracle Universal Installer detects when the minimum requirements for an installation are not met, and creates shell scripts, called fixup scripts, to finish incomplete system configuration steps.
• About Operating System Requirements
  Depending on the products that you intend to install, verify that you have the required operating system kernel and packages installed.
• Operating System Requirements for x86-64 Linux Platforms
  The Linux distributions and packages listed in this section are supported for this release on x86-64.
• Operating System Requirements for Linux for Arm (aarch64)
  The Linux distribution and packages listed in this section are supported for this release on Linux for Arm (aarch64).
• Additional Drivers and Software Packages for Linux
  Information about optional drivers and software packages.
• Checking Kernel and Package Requirements for Linux
  Verify your kernel and packages to see if they meet minimum requirements for installation.
• Setting Clock Source for VMs on Linux x86-64
  Oracle recommends that you set the clock source to tsc for better performance in virtual environments (VM) on Linux x86-64.
• Confirming Host Name Resolution
  Check to ensure that the host name for your server is resolvable.
• Setting Transparent HugePages to madvise
  Transparent HugePages memory is enabled by default with Oracle Linux. However, for optimal performance, Oracle recommends that you set Transparent HugePages to madvise on all Oracle Database servers UEK7 and later kernels and not disable Transparent HugePages as was recommended in prior releases.
• Using Automatic SSH Configuration During Installation
  To install Oracle software, configure secure shell (SSH) connectivity between all cluster member nodes.
• Verifying the Disk I/O Scheduler on Linux 8 and Later Systems
  Disk I/O schedulers reorder, delay, or merge requests for disk I/O to achieve better throughput and lower latency.
• Verifying Digital Signature and Integrity of Installation Archive Files
  Starting with Oracle Database 23ai, Oracle digitally signs the installation archive files with Oracle certificates to ensure the integrity of the packages before you deploy them in your environments.