Which three methods can be used to create a pluggable database (PDB) in an existing multitenant container database (CDB)?
A.
Use PDB$SEED for creating a PDB.
B.
Use the DBMS_PDB package to plug a non-CDB into an existing CDB.
C.
Clone an existing PDB.
D.
Use Enterprise Manager Database Express to create a PDB in an existing CDB.
E.
Use the DBMS_PDB package to plug a pre-Oracle 12c database into an existing CDB.
ABC
A,C is true , E is False
Now For D
11.7.1 Creating a New PDB from the Seed Using EM Express
https://docs.oracle.com/database/121/ADMQS/GUID-428FB00B-2064-4DF1-BB57-D24EB932FB53.htm#ADMQS12512
So D may be true
For B -> “Create a PDB by moving a non-CDB into a PDB. You can use the DBMS_PDB package to create an unplugged PDB from an Oracle Database 12c non-CDB. You can then plug the unplugged PDB into the CDB.”
So B may be wrong because you should first use DBMS_PDB package to create an unplugged PDB. and not directly use DBM_PDB to plug non-CDB
So Answer should be A,C,D
ACD
I’m not sure D is correct because Enterprise Manager Express also uses PDB@seed