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You want to migrate your existing non-ASM files to ASM files for the database PROD. Which method  or command would you use to accomplish this task？（）
A:the CONVERT command of RMAN
B:Data Pump Export and Import into the same database
C:conventional export and import into the same database
D:the BACKUP DATABASE and RESTORE DATABASE commands of RMAN
E:the BACKUP AS COPY DATABASE and SWITCH DATABASE TO COPY command of RMAN

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出自：Oracle认证

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