This question was posted on the blog a few days ago referring to my previous blog posts describing the two techniques to upgrade in an Oracle Multitenant environment:
We are planning to upgrade from 220.127.116.11.1 to 18.104.22.168.5. The plan is to create new 22.214.171.124.5 oracle home and gradually moving PDB from 126.96.36.199.1 to 188.8.131.52.5. Should I follow the same steps? Is there any document for what we want to do?
And luckily there is a MOS Note out there describing the steps:
The part this note is not talking about is the unplug/plugin operations in detail.
But this is something you’ll find here: