問題文
An administrator wants to understand what happens on the database host when a backup command is issued from the recovery manager client. Which statement describes that architecture?
選択肢
- The client asks the listener to spawn one process per data file and the listener then writes the resulting pieces into the recovery area.
- The client hands the work to server sessions on the target and each allocated channel corresponds to one server session performing the reads plus the writes.
- The client stores the blocks inside its own memory during the run and the target instance later flushes them to the backup device.
- The client reads the data files itself through the operating system and it later streams the blocks to the storage device without involving the target instance.