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.
A: Online backups.
B: Skipping unused block.
C: Partial database backups.
D: Incremental block-level backup.
E: Detection 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: AOnline backups. B: BSkipping unused block. C: CPartial database backups. D: DIncremental block-level backup. E: EDetection 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.
- 数据备份策略通常（）。 A: 包括完全备份（Full Backup）、差异备份（Differential Backup）和增量备份（Incremental Backup） B: 仅有完全备份（Full Backup）和增量备份（Incremental Backup） C: 仅有完全备份（Full Backup）和差异备份（Differential Backup） D: 仅有差异备份（Differential Backup）和增量备份（Incremental Backup）
- 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