单项选择题
A. They will be renamed.
B. Nothing will happen to them. The backup set pieces do not exist.
C. They will be deleted immediately since they are not in the flash recovery area.
D. You will need to manually remove the physical files listed in the output of the commands.
E. They will become hidden files and removed 10 days later.
单项选择题 You have lost all your RMAN backup set pieces due to a disk failure. Unfortunately， you have an automated cross-check script that also does a delete expired backupset command. You have restored all the backup set pieces from tape. What command would you use to get those backup set pieces registered in the recovery catalog and the control file of the database again？（）
单项选择题 Youhavebackedupyourdatabasetwicewithoutconnectingtotherecoverycatalog.Whatcommanddoyouissuetotransferthecontrol-filemetadatatotherecoverycatalog？（）
单项选择题 Whatcommandwouldyouusetoensurethatbackuprecordsinthecontrolfilearepointingtoactualphysicalfilesonthebackupmedia？（）