【单选题】You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tr...
A.
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;
B.
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;
C.
ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE ;
D.
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ;