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- 单项选择题 You disabled the Flashback Database feature by using the following command： SQL> ALTER DATABASE FLASHBACK OFF; What would be the effect of this command on the existing flashback logs？（）
A、Flashback logs are not deleted.
B、Flashback logs are deleted automatically.
C、Flashback logs are deleted only if you are using Recovery Manager （RMAN）.
D、Flashback logs are deleted only if you are using Oracle Managed Files （OMF）.
E、Flashback logs are deleted only if you are using Automatic Storage Management （ASM）.
- B
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