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You have created a script in the recovery catalog called backup_database. Which of the following commands would successfully execute that script？（）  
A: run { open script backup_database； run script backup_database }
B: run { engage script backup_database； }
C: run { run script backup_database； }
D: Run { execute script backup_database； }
E: The name backup_database is an invalid name for an RMAN script. Trying to run it from RMAN would result in an error.

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出自：Oracle认证

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