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.
A: AOnline backups.
B: BSkipping unused block.
C: CPartial database backups.
D: DIncremental block-level backup.
E: EDetection of corrupted blocks during backup.
举一反三
- 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.
- 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.（）
- 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.
- 备份整个数据库使用（ ）命令完成。 A: BACKUP TABLESPACE B: BACKUP DATABASE C: BACKUP TABLE D: RESTORE DATABASE
- When youre performing active database duplication，a backup of what kind is required？（） A: A current RMAN backup-set backup is required. B: No backup is required. C: An RMAN image backup is required. D: A manual backup is required. E: A "duplicate" preparatory backup is required.