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The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）
A:Inactive and current redo log files are required to accomplish recovery.
B:Online and archived redo log files are required to accomplish instance recovery.
C:All redo log entries after the last checkpoint are applied from redo log files to data files.
D:All redo log entries recorded in the current redo log file until the checkpoint position are applied to datafiles.

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出自：Oracle认证

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