問題文
A new database has to be configured so that the daily incremental backups finish quickly and so that the information needed for a restore survives the loss of the control file. Which statement describes the two settings involved?
選択肢
- Tracking of changed blocks lets the incremental backup read only what changed, and the automatic backup of the control file keeps a copy of the information that a restore needs outside the database itself.
- Compression of the backup sets lets the incremental backup read only what changed, and the automatic backup of the control file keeps a copy of that information outside the database.
- Tracking of changed blocks lets the incremental backup read only what changed, and the retention policy keeps a copy of the control file outside the database for as long as the policy window lasts.
- Duplexing of the backup sets lets the incremental backup read only what changed, and the snapshot of the control file keeps a copy of that information outside the database for the next restore.