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If a backup is

题目

If a backup is expired， which of the following is true？（）  

  • A、 It can never be used for a restore/recover operation.
  • B、 Oracle will remove the backup set pieces from the flash recovery area.
  • C、 The backup has been used at least once to restore and recover the database.
  • D、 The backup is no longer valid because of a resetlogs operation.
  • E、 The physical backup set pieces are missing from the media.
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相似问题和答案

第1题：

You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days, you want to change the status of the database backup and you issued the following command: RMAN>CHANGE BACKUPSET 231 NOKEEP; What is the implication of this command?（）

  • A、The backup is deleted.
  • B、The backup is marked unavailable.
  • C、The backup overrides the backup retention policy.
  • D、the backup becomes eligible for deletion according to the existing retention policy

正确答案:D

第2题：

Which of the following BEST describes the difference between differential and incremental backups？（）

  • A、 An incremental backup requires fewer tapes for restoration than a differential backup. 
  • B、 A differential backup tape takes less time than an incremental backup tape.
  • C、 A differential backup requires fewer tapes for restoration than an incremental backup.
  • D、 An incremental backup tape costs less than a differential backup tape.

正确答案:C

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：

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.

正确答案:B

第5题：

Which command is used to configure RMAN to perform a compressed backup for every backup executed？（）

  • A、 BACKUP AS COMPRESSED BACKUPSET DATABASE
  • B、 BACKUP AS COMPRESSED COPY OF DATABASE
  • C、 CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET
  • D、 CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS 
  • E、 BACKUP DATABASE COMPRESS

正确答案:C

第6题：

指定同/异步串口1和2的备份优先级分别为10和20的配置为（）

  • A、backup interface 1 10； backup interface 2 20
  • B、backup interface serial 1 10； backup interface serial 2 20
  • C、backup interface 1 priority 10； backup interface 2 priority 20
  • D、backup interface serial 1 priority 10； backup interface serial 2 priority 20

正确答案:D

第7题：

A system administrator performs a full backup every Saturday evening and incremental backups the rest of the week. The system failed on Thursday and needs to be restored. Which backup tapes will be required to restore the system to its most recent recoverable state？（）

  • A、Saturday’s full backup tape only
  • B、Wednesday’s incremental backup tape only
  • C、Saturday’s full backup and Wednesday’s incremental backup tapes
  • D、Saturday’s full backup and Sunday’s through Wednesday’s incremental backup tapes

正确答案:D

第8题：

The backup utility reports an error while performing the backup process. The server indicates noother problems. Which of the following is the MOST likely cause of the failed backup？（）

  • A、 Network is unavailable
  • B、 The backup software is misconfigured
  • C、 The current backup tape is bad
  • D、 The wrong size backup tapes were loaded

正确答案:C

第9题：

You are managing an Oracle Database 11g database with this backup strategy：  - Every Sunday night， level 0 backup is performed.  - On Monday night and subsequent days， level 1 incremental backup is performed.  The backups are not cumulative incremental.  Which statement about Monday’s backup is true（）

  • A、The backup contains all the used blocks.
  • B、The backup contains all the used and unused blocks.
  • C、The backup contains blocks that have changed since the last level 0 backup.
  • D、The backup contains blocks that have changed since the last level 1 backup taken last week.

正确答案:C

第10题：

You are maintaining the SALES database of a company. You have never backed up the USERS tablespace that is currently offline. On Sunday， you issued the following commands：   CONFIGURE DEFAULT DEVICE TYPE TO sbt；   CONFIGURE BACKUP OPTIMIZATION ON；   CONFIGURE RETENTION POLICY TO REDUNDANCY 3；   From Monday to Saturday， you performed the following actions：   Day                         Action  Monday                BACKUP DATABASE  Tuesday                BACKUP DATABASE  Wednesday              BACKUP DATABASE  Thursday               BACKUP DATABASE  Friday                 BACKUP DATABASE  Saturday               BACKUP DATABASE  How many times will the backup of the USERS tablespace be performed？（）

  • A、 The backup will not be performed at all.
  • B、 three times
  • C、 four times
  • D、 six times

正确答案:C

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