为自己加油

Choose the best answer.

How do you configure a CDB for local undo mode?

A.
Open the CDB instance in restricted mode. In CDB$ROOT, drop the UNDO
Tablespace. Execute ALTER DATABASE LOCAL UNDO ON in each PDB, and then
Restart the CDB
Instance.
B.
Open the CDB instance in upgrade mode. In CDB$ROOT, execute ALTER
DATABASE LOCAL UNDO ON, and then restart the CDB instance.
C.
Open the CDB instance in upgrade mode. In each PDB, execute ALTER
DATABASE LOCAL UNDO ON, create an UNDO tablespace, and then restart the
CDB instance.
D.
Open the CDB instance in restricted mode. In CDB$ROOT, execute ALTER
DATABASE LOCAL UNDO ON. create an UNDO tablespace in each PDB, and
Then restart the CDB instance.
E.Open the CDB in read-only mode. In CDB$ROOT, execute ALTER DATABASE
LOCAL UNDO ON, and then change the CDB to read/write mode.