You executed the following command in Recovery Manager (RMAN) to perform a backup of the DETTBS tablespace: RMAN> BACKUP TABLESPACE DETTBS;  Under which conditions would this command execute successfully? ()
A: The database is in NOMOUNT state.
B: The database is in NOARCHIVELOG mode and the tablespace is online.
C: The database is in NOARCHIVELOG mode and the tablespace is offline.
D: The database is in ARCHIVELOG mode and the tablespace is offline.
E: The database is in ARCHIVELOG mode and the tablespace is online.
出自:Oracle认证