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If a log file becomes corrupted， it may cause the database to stall. How would you correct such a situation？（）  
A: Recover the online redo log from backup.
B: Delete and re-create the log file.
C: Use the alter database clear logfile command to clear the log file.
D: Shut down the database and restart it.
E: Shut down the database and then mount it. Clear the log file with the alter database clear logfile command and then restart the database with alter database open resetlogs.

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出自：Oracle认证

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