（多选题）
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.
正确答案
答案解析
略
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