You are managing a 24*7 database. The backup strategy for the database is to perform user-managed backups. Identify two prerequisites to perform the backups.（）
举一反三
- What purpose would you achieve by enabling the block change tracking feature？（） A: Eliminate the necessity for backups. B: Perform optimized image copy backups. C: Perform optimized incremental backups. D: Enable checkpoint （CKPT） to perform checkpointing at every block change. E: Enable database writer （DBWn） to write changed blocks to data files faster.
- Which three features are provided by Recovery Manager and NOT provided by user-managed backup and recovery？（） A: Online backups. B: Skipping unused block. C: Partial database backups. D: Incremental block-level backup. E: Detection of corrupted blocks during backup.
- Which three features are provided by Recovery Manager and NOT provided by user-managed backup and recovery？（） A: AOnline backups. B: BSkipping unused block. C: CPartial database backups. D: DIncremental block-level backup. E: EDetection of corrupted blocks during backup.
- What command would you issue to enable automated backups of control files? （） A: alter database controlfile autobackuon B: alter system controlfile autobackup on C: configure controlfile autobackup on D: enable controlfile autobackup
- What command would you issue to enable automated backups of control files? （） A: alter database controlfile autobacku on B: alter system controlfile autobackup on C: configure controlfile autobackup on D: enable controlfile autobacku