多项选择题
A. The database must be opened in restricted mode.
B. The database must be configured to run in ARCHIVELOG mode.
C. The tablespaces are required to be in backup mode before taking the backup.
D. The tablespaces are required to be in read-only mode before taking the backup
单项选择题 Examine the following scenario： -Database is running in ARCHIVELOG mode. -Complete consistent backup is taken every Sunday. -On Tuesday the instance terminates abnormally because the disk on which control files are located gets corruptedThe disk having active online redo log files is also corrupted. The hardware is repaired and the paths for online redo log files and control files are still valid. Which option would you use to perform the recovery of database till the point of failure？（）
多项选择题 IdentifythechannelsettingsthatcanbeperformedusingtheCONFIGURECHANNELorALLOCATECHANNELcommandsinRMAN？（）
多项选择题 WhattwoaretheprerequisitesforenablingFlashbackDatabase？（）