OCP-1Z0-053-V12.02-346题

346.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.

E. The last backup of the users01.dbf datafile failed and must be rerun.

Answer: D

答案解析：

参考官方文档：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmquick.htm#BRADV131

即列出自上次以来的备份中，哪些数据文件的备份已经失效，需要重新备份。

NRECOVERABLE

REPORT UNRECOVERABLE

Lists all data files for which an unrecoverable operation has been performed against an object in the data file since the last backup of the data file.