.Which two are true about automatic block repair? (Choose two.)
A.Automatic block repair can repair blocks with no standby database if DB_BLOCK_CHECKING = TRUE. B.Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on that physical standby database. C.Real-Time Query must be enabled on a primary database for automatic block repair to be done on any of its physical standby databases. D.It is not possible for media corrupt blocks. E.Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on its primary database.正确答案DE
