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单选题You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?（）A RMAN BACKUP DURATION

题目
单选题
You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?（）
A

RMAN> BACKUP DURATION 2:00 MINIMIZE LOAD DATABASE

B

RMAN> BACKUP DURATION 2:00 PARTIAL FILESPERSET 1 DATABASE

C

RMAN> BACKUP DURATION 2:00 PARTIAL MINIMIZE TIME DATABASE 

D

RMAN> BACKUP AS COPY DURATION 2:00 PARTIAL MINIMIZE LOAD DATABASE

参考答案和解析
正确答案： A
解析： 暂无解析
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相似问题和答案

第1题：

You want to make sure that your database backup does not exceed 10 hours in length. What command would you issue that would meet this condition?（）

  • A、backup database plus archivelog
  • B、backup database plus archivlog until time ‘10:00‘
  • C、backup database plus archivelog timeout ‘10:00‘
  • D、backup database plus archivelog duration 10:00

正确答案:D

第2题：

You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?（）

  • A、RMAN> BACKUP DURATION 2:00 MINIMIZE LOAD DATABASE
  • B、RMAN> BACKUP DURATION 2:00 PARTIAL FILESPERSET 1 DATABASE
  • C、RMAN> BACKUP DURATION 2:00 PARTIAL MINIMIZE TIME DATABASE 
  • D、RMAN> BACKUP AS COPY DURATION 2:00 PARTIAL MINIMIZE LOAD DATABASE

正确答案:A

第3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4题：

Your database is functioning in NOARCHIVELOG mode. Your database contains 15 tablespaces. You want to use Recovery Manager （RMAN） to perform backups.  Which two backups would you be able to perform when the database is being accessed by users？（）

  • A、backup of offline tablespaces
  • B、backup of read­only tablespaces
  • C、backup of system­critical tablespaces
  • D、backup of online， locally managed tablespaces
  • E、backup of read/write dictionary­managed tablespaces

正确答案:A,B

第5题：

How long will this backup be allowed to run？（）  Backup as compressed backupset duration 2：00 minimize load database

  • A、 2 minutes
  • B、 2 hours
  • C、 2 days
  • D、 The command will generate an error.
  • E、 This backup is not constrained by any time limitation.

正确答案:B

第6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7题：

You database operates in ARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Tuesday， at 9：00 a.m. the current log sequence number was 369. Also， on Tuesday you lost the data file belonging to the SYSTEM tablespace and an achivelog file （sequence number 356） that contained redo entries between 8：00 a.m. and 8.30 a.m. With reference to this scenario， what would you do to recover the database？（）

  • A、 Restore all the data files from last Sunday’s backup， and then perform a time-based recovery.
  • B、 Restore all the data files from last Sunday’s backup， and then perform a cancel-based recovery.
  • C、 Restore all the data files from last Sunday’s backup， and then perform a change-based recovery.
  • D、 Restore only data files that belong to the SYSTEM tablespace from last Sunday’s backup， and then perform a complete recovery.

正确答案:B

第8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9题：

Your database is functioning in NOARCHIVELOG mode. Your database contains 15 tablespaces. You want to use Recovery Manager （RMAN） to perform backups. Which two backups would you be able to perform when the database is being accessed by users？（）

  • A、 Backup of offline tablespaces.
  • B、 Backup of read-only tablespaces.
  • C、 Backup of system-critical tablespaces.
  • D、 Backup of online， locally managed tablespaces.
  • E、 Backup of read/write dictionary-managed tablespaces.

正确答案:A,B

第10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

正确答案:A,D

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