ocp-247

QUESTION NO: 247原答案错误
What is the impact of the results of the output of the following command?

RMAN> report unrecoverable database;
Report of files that need backup due to unrecoverable operations
File Type of Backup Required Name
4 full or incremental C:\ORACLE\ORADATA\ORCL\USERS01.DBF
A. There are no backup sets with any backups of the users01.dbf datafile.
B. The users01.dbf datafile has had unrecoverable operations occur in it. It will need to be backed up or
some data loss is possible during a recovery.
C. The users01.dbf datafile is corrupted.
D. The users01.dbf datafile backup exceeds the retention criteria. USERS01.DBF数据文件备份已超过保留
标准
E. The last backup of the users01.dbf datafile failed and must be rerun.
Answer: B
The users01.dbf database datafile has had an unrecoverable operation occur. Because an unrecoverable
operation does not generate redo records, the data involved in that operation will be lost in the event of a
recovery. The datafile should be backed up.

下面的命令的输出结果的影响是什么？

B.USERS01.DBF数据文件上已经发生了不可恢复的操作。 它将需要备份， 否则在恢复过程中有些数据可能丢失。

USERS01.DBF数据库的数据文件有一个不可恢复的操作发生，因为一个不可恢复的操作不会产生重做记录，在恢复事件中，在该操作中所涉及的数据将会丢失。 数
据文件应该被备份。