Review the contents in this section to validate that your Oracle RAC cluster is ready for upgrades.

• Using the CVU Database Upgrade Validation Command Options
  Use the Cluster Verification Utility (CVU) to check the readiness of your Oracle RAC installation for upgrades.
• Example of Verifying System Upgrade Readiness for Oracle RAC Infrastructure
  You can verify that the permissions required for installing Oracle RAC have been configured on the nodes node1 and node2 using cluvfy.
• Verifying System Readiness for Oracle Database Upgrades
  To avoid interruptions during the upgrade process, you can use Cluster Verification Utility to ensure your system is ready.