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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.

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出自：Oracle认证

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