多选题Identify two correct statements about multitenant architectures.（）AMultitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.BMultiple pluggable databases (PDBs) share certain multitenant container database (CDB)
题目
多选题
Identify two correct statements about multitenant architectures.（）
A
Multitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.
B
Multiple pluggable databases (PDBs) share certain multitenant container database (CDB) resources.
C
Multiple CDBs share certain PDB resources.
D
Multiple non-RAC CDB instances can mount the same PDB as long as they are on the same server.
E
Patches are always applied at the CDB level.
F
A PDB can have a private undo tablespace.