单选题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/O
题目
单选题
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.