choose two
Your database is running in ARCHIVELOG mode.
You want to take a consistent whole database backup.
Which two statements are true in this scenario?
A) RMAN backups contain only data files.
B) The database must be in MOUNT state to take consistent RMAN backups.
C) User-managed backups only contain formatted data blocks.
D) The database instance must be shut down to take a user-managed consistent backup.
E) Consistent RMAN backups can be taken while the database is open.
Answer：BD
(解析：一致性备份数据库就不能是打开的，rman必须要mount状态，uman必须是关闭状态。来自3组：1015267481)