It’s Oracle Open World week in San Francisco. and it is time for announcements of course.
What has been announced?
Today at OOW 2019, Jenny Tsai-Smith and Dominic Giles announced in their talk that the non-CDB architecture will be desupported from Oracle 20c on. But VERY IMPORTANT, from Oracle 19c on you can have 3 user-created pluggable databases of any type without a Multitenant license. As soon as you have need for 4 or more PDBs within one container database, you will need a Multitenant license.
You can find the update regarding 3 PDBs already in the Oracle 19c License Guide:
This makes moving to the CDB architecture much more attractive.
And in addition, I personally would recommend to set the parameter
MAX_PDBS=3 if you don’t have a Multitenant license yet.
Desupport of the non-CDB architecture