多选题Which two statements are true about Oracle Managed Files (OMF)?（）AOMF cannot be used in a database that already has data files created with user-specified directions.BThe file system directions that are specified by OMF parameters are created automatic
题目
多选题
Which two statements are true about Oracle Managed Files (OMF)?（）
A
OMF cannot be used in a database that already has data files created with user-specified directions.
B
The file system directions that are specified by OMF parameters are created automatically.
C
OMF can be used with ASM disk groups, as well as with raw devices, for better file management.
D
OMF automatically creates unique file names for table spaces and control files.
E
OMF may affect the location of the redo log files and archived log files.