184.Which RMAN backup command is used to create the block-change tracking file?
A.alter database create block change tracking file
B.alter database enable block change file
C.alter database enable block change tracking using file ,,/ora01/opt/ block_change_tracking.fil
D.alter system enable block change tracking using file '/ora01/opt/block_ change_tracking.fil'
E.alter system block change tracking on
正确答案是C