問題文
A container database holds six pluggable databases, and only one of them has a nightly backup window that differs from the rest. Which statement describes the unit at which backups can be taken here?
選択肢
- A session in the root can back up single pluggable databases alone, and the whole container database has to be assembled afterwards from the pluggable database backups and the root backup.
- A session in the root can back up the whole container database, and the archived logs have to be taken separately from each pluggable database that produced them during the window.
- A session in the root can back up the whole container database or name single pluggable databases, and a session connected straight to one pluggable database can back up that pluggable database on its own schedule.
- A session in the root can back up the whole container database alone, and a session connected straight to one pluggable database can back up the root as well so that the two are always consistent.