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You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?（）A、Backup compression should be enabledB、Parallelism for the channel shoul

题目

You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?（）

  • A、Backup compression should be enabled
  • B、Parallelism for the channel should be set to 2
  • C、All the files must be backed up as backup sets
  • D、The backup may be stored either on disk or on media with media manager
参考答案和解析
正确答案:D,E
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相似问题和答案

第1题：

You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation? ()(Choose two.)

A. Backup compression should be enabled

B. Parallelism for the channel should be set to 2

C. All the files must be backed up as backup sets

D. The backup may be stored either on disk or on media with media manager


参考答案：C, D

第2题：

You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?() (Choose two).

A. The backup as copy can only be taken to disk

B. The backup as copy can only be taken to tape

C. Backup can be performed only when the instance is shutdown

D. Backup will constitute all used and unused blocks in the database


参考答案：A, D

第3题：

You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database.Which two statements are true about this backup operation?()

A. Backup compression should be enabled

B. Parallelism for the channel should be set to 2

C. All the files must be backed up as backup sets

D. The backup may be stored either on disk or on media with media manager


参考答案：D, E

第4题：

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN). To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Which two statements are true about the execution of the above command? （）(Choose two.)

  • A、The backup piece size will be limited to 300 MB
  • B、The RMAN uses multiplexing to perform backup
  • C、The operation is accomplished using the default channel available
  • D、The RMAN parallelizes the backup although the parallelism is not set for a channel

正确答案:A,C

第5题：

You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） to perform backups in your databases. Which four backup operations can be performed using RMAN？（）

  • A、A backup of the target database when it is mounted
  • B、A backup of online redo log files when the database is open
  • C、A backup of only used data blocks in the file beingbeingbackup up
  • D、A backup of online， read/write data files when the database is open
  • E、A backup of only those data blocks that have changed since a previous backup
  • F、A backup of online， read/write data files when the database is in the NOMOUNT state.

正确答案:A,C,D,E

第6题：

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN).To accomplish the backup, you issued the following RMAN command:RMAN> BACKUP SECTION SIZE 300M TABLESPACE users;Which two statements are true about the execution of the above command? （）(Choose two.)

A. The backup piece size will be limited to 300 MB

B. The RMAN uses multiplexing to perform backup

C. The operation is accomplished using the default channel available

D. The RMAN parallelizes the backup although the parallelism is not set for a channel


参考答案：A, C

第7题：

You want to take a complete database backup using RMAN. The backup should consist onlythe used blocks from your database. Which two statements are true about this backup operation？（） 

  • A、 Backup compression should be enabled
  • B、 Parallelism for the channel should be set to 2
  • C、 All the files must be backed up as backup sets
  • D、 The backup may be stored either on disk or on media with media manager

正确答案:C,D

第8题：

You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation?()

A. The backup as copy can only be taken to disk

B. The backup as copy can only be taken to tape

C. Backup can be performed only when the instance is shutdown

D. Backup will constitute all used and unused blocks in the database


参考答案：A, D

第9题：

Which two statements regarding compressed backups in Recovery Manager （RMAN） are true？（）

  • A、 Backup compression is disabled by default.
  • B、 Backup compression can be used with both backup sets and image copies.
  • C、 Backup compression cannot be enabled using the CONFIGURE command.
  • D、 Backup compression works only if the COMPATIBILITY parameter is set to 9.0.0.0 or higher.
  • E、 Backup compression applies to only backup sets.
  • F、 Backup compression applies to only image copies.

正确答案:A,E

第10题：

You perform differential incremental level 1 backups of your database on each working day and level 0 backup on Sundays， to tape.  Which two statements are true about differential incremental backups（）

  • A、The backup performed on Sundays contains all the blocks that have ever been used in the database.
  • B、The backup performed on Sundays contains all the blocks that have changed since the last level 1backup. 
  • C、The backup performed on each working day contains all the blocks that have changed since the lastlevel 0 backup.
  • D、The backup performed on Monday contains all the blocks that have changed since the level 0 backup，and every other working day contains all the blocks that have changed since the level 1 backup.

正确答案:A,D

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