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- 多项选择题You work as a database administrator for Supportcenter.cn. Your database is in the MOUNT state and you execute the following command to open it ALTER DATABASE OPEN； What two actions are performed as a result of this command？（）
A、All control files are opened
B、All redo files are opened
C、The password file is opened
D、The parameter file is opened
E、All online data files are opened
- B,E
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