Upgrade Oracle RAC Nodes OS version from Redhat 6.8 to RH7.9
I have an Oracle RAC installed on 2 nodes. the RAC is on production.
The RAC database and infrastructure version is 12c release 2.
The Nodes OS version is Linux Redhat 6.8
I want to upgrade the Linux version from Redhat 6.8 to 7.9
We will NOT upgrade the Grid infrastructure or database version.
what is the best approach? Can we do the OS in a rolling upgrade fashion?
I will be grateful if you have any reference to a document how to do the upgrade.
Regards
Tony