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You are working on the APPDB database as a DB A. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1：   DROP FLASHBACK ARCHIVE fla1；   What is the effect of this command？（）
A: The Flashback Archive FLA1 is dropped only if it is empty.
B: The tablespace having Flashback Archive is dropped.
C: The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive.
D: The Flashback Data Archive and historical data are dropped.

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出自：Oracle认证

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