【第31題】【063題庫】2019年OCP12c認證1Z0-063考試題庫大全
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我要咨詢OCP 12c考試考3科，分別是071、062、063，之前071和062都已經做過解析，這里開始063題庫解析，希望對考063的同學有幫助，順利通過063考試。
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31題、Your database is running in noarchivelog mode. One of the data files belonging to the system tablespace is corrupted. You notice that all online redo logs have been overwritten since the last backup.
Which method would you use to recover the data file?
A. Shut downthe instance if not already shut down, restore all data files belonging to the system tablespace from the last backup, and restart the instance.
B. Shut down the instance if not already shut down, restore the corrupted data file belonging to the system tablespace from the last backup, and restart the instance.
C. Shut down the instance if not already shut down, restore all data files for the entire database from the last backup, and restart the instance.
D. Mount the database, restore all data files belongingto the system tablespace from the last backup,and open the database.
Answer: C
(解析：非歸檔的恢復只能把整個數據庫的數據文件恢復回來，不能單獨的恢復某個數據文件，因為沒有歸檔日志)
