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- 单项选择题 You execute a command to resize a data file， sales.dbf， of size 200 MB in your database： ALTER DATABASE DATAFILE ’/remorse/sales.dbf’ RESIZE 150M； Which statement is true about this command（）
A、The command must be issued in MOUNT state.
B、The command succeeds only if the data file is offline.
C、The command must be issued when the database is in the archivelog mode.
D、The command succeeds if no extent in the tablespace is currently allocated above the 150 MB boundary of the file.
- D
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