Hi @JFK1963, Good evening!
Teamcenter 11 does not support Multitenant Architecture. You would need to create a non-CDB (or stand-alone) architecture (not Multitenant Architecture) database.
Refer to below link for more details.
Good afternoon, @JFK1963.
Yes, starting with Teamcenter 11.5, support for the CDB type database in Oracle has been added, you can read more in the documentation: