Why do I need to upgrade (or downgrade) a Pluggable Database (PDB) once I unplug it from version A and replug into version B?
This question is one of the most often asked questions in our workshops when Roy and I present Upgrades and Oracle Multitenant.
If you take a look into the documentation you’ll find:
But unfortunately this is not 100% correct for every object.
When you do a simple query for basic dictionary structures such as OBJ$ you’ll easily find out that a PDB has its own Data Dictionary. Some things are really linked …Continue reading...