为自己加油

Choose two.

Which two are true about RMAN virtual private catalogs (VPCs)?

A.
The RMAN catalog owner can grant access for an already registered database
To a new virtual catalog owner.
B.
Each VPC is owned by the recovery catalog schema owner.
C.
RMAN uses Oracle Virtual Private Database (VPD) to implement VPCs.
D.
Only one target database can be registered in a VPC.
E.
VPC functionality is enabled by default.