问题:
You issue this SQL command to perform an online backup of the USER_DATA tablespace:ALTER TABLESPACE user_data BEGIN BACKUP;Next, you issue an operating system command to back up user_data01.dbf, the file that belongs to the USER_DATA tablespace. You then experience an instance failure.
Which three statements are true?()
A . A
B . B
C . C
D . D
E . E
You issue this SQL command to perform an online backup of the USER_DATA tablespace:ALTER TABLESPACE user_data BEGIN BACKUP;Next, you issue an operating system command to back up user_data01.dbf, the file that belongs to the USER_DATA tablespace. You then experience an instance failure.
Which three statements are true?()
● 参考解析
本题暂无解析
相关内容
相关标签