Which two statements regarding the Flashback Table feature are correct？（）<br>A: Flashback Table can be performed on system tables.<br>B: Flashback Table operation does not shrink the segments.<br>C: Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.<br>D: Flashback Table operation acquires exclusive data manipulation language （DML） locks.

Which two statements regarding the Flashback Table feature are correct？（）
A: Flashback Table can be performed on system tables.
B: Flashback Table operation does not shrink the segments.
C: Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.
D: Flashback Table operation acquires exclusive data manipulation language （DML） locks.

出自：Oracle认证

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