单选题Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What i

题目
单选题
Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?()
A

The files have grown to over eight gigabytes in size

B

The file systems are corrupt, and fsck should be run

C

The tape block size has been changed from the default

D

The user’s limit has been changed to less than eight gigabytes

参考答案和解析
正确答案: B
解析: 暂无解析
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相似问题和答案

第1题:

Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?()

  • A、The files have grown to over eight gigabytes in size
  • B、The file systems are corrupt, and fsck should be run
  • C、The tape block size has been changed from the default
  • D、The user’s limit has been changed to less than eight gigabytes

正确答案:A

第2题:

A customer with a small IT budget has one data center. Their main application is a database   running on an IBM System Storage DS8000. The database has a data change rate of 50% per day. Once a week, they must do a point-in-time backup from the database to tape. The time it takes to run the backup now exceeds the backup window allowed. The customer requests a proposal to reduce database downtime caused by running backups, with nearly zero impact to production volumes.  In addition to the tape backup, which DS8000 feature should a technical specialist propose()

  • A、FlashCopy
  • B、FlashCopy SE
  • C、Metro Mirror
  • D、Global Mirror

正确答案:A

第3题:

Examine the following RMAN script:Which statement describes the purpose of the script?()

A. The data file is checked for physical corruption and backed up if found clean.

B. The backup of data file 5 is performed and the interactive messages during the backup are suppressed.

C. The existing backup for the data file is checked and the backup is performed if there are changes in the data file after the last backup.

D. The backup of data file 5 is performed and all SQL statements that are executed during RMAN compilation and their results are displayed


参考答案:D

第4题:

The size of the largest datafile, data1.dbf, in your database is 30MB. You issued the following command:   RMAN>CONFIGURE MAXSETSIZE 10MB;     What will be the impact of the above setting?()

  • A、 While performing the backup of the datafile,data1.dbf,one backup set is created.
  • B、 While performing the backup of the datafile,data1.dbf,two backup sets are created.
  • C、 While performing the backup of the datafile,data1.dbf,three backup sets are created.
  • D、 While performing the backup of the datafile,data1.dbf,the command for performing a backup of the datafile,data1.dbf,will fail.

正确答案:D

第5题:

During a cluster synchronization, an administrator inadvertently performs al ctrl ’C’ causing the synchronization to fail. After restarting the resynchronization, the administrator notices a message stating that a previous dare operation has been detected.  What is the best way to resolve this problem?()  

  • A、 Perform a ’Recover from HACMP Script Failure’.
  • B、 Perform a ’Release Lock Set By Dynamic Reconfiguration’.
  • C、 Perform a graceful stop an& start of all cluster processing.
  • D、 Perform a ’Restore HACMP Configuration Database from Active Configuration’.

正确答案:B

第6题:

A corrupted file system is now repaired and back in use. Some, but not all of the files within the file  systems have been deleted. The only backup of this file system is a month-old tar archive. This archive will need to be restored as root.  Which two statements correctly describe the effects of the restore operation?()

  • A、 Files found in the file system that are also on tape will NOT be overwritten.
  • B、 The missing files, present on the backup tape, are restored to the file system with the data as it was when the backup was taken.
  • C、 The access times are preserved by tar and will reflect the time when a user last accessed the data.
  • D、 The modification time on the files restored by tar will be preserved and will reflect the time the file was last modified before the backup, NOT the time of the restore operation.

正确答案:B,D

第7题:

Which of the following techniques is used to extract the /usr/tmp directory from a mksysb backup?()

  • A、Use the tar command on the fifth image.
  • B、Use the restore command on the fourth image.
  • C、Use tctl -f /dev/rmt0.1 fsf 3 followed by the tar command on the fourth image.
  • D、Reboot using the mksysb tape and then use the dd command to extract the file.

正确答案:B

第8题:

Which of the following techniques is used to extract the /usr/tmp directory from a mksysb backup?()

A.Use the tar command on the fifth image.

B.Use the restore command on the fourth image.

C.Use tctl -f /dev/rmt0.1 fsf 3 followed by the tar command on the fourth image.

D.Reboot using the mksysb tape and then use the dd command to extract the file.


参考答案:B

第9题:

What feature comes into play to help ensure the completion of the backup should one of three backup devices fail during a backup that is using three different channels?()

  • A、Channel failover
  • B、Restartable backups 
  • C、Rescheduable backups 
  • D、Automatic backup recovery 
  • E、Channel recovery

正确答案:A

第10题:

You scheduled a backup by using the Schedule Backup option in Oracle Enterprise Manager. Which statement about the script created by Oracle Enterprise Manager is true? ()

  • A、It is a SQL script.
  • B、It is a PL/SQL file.
  • C、It is an operating system (OS) file.
  • D、It is a Recovery Manager (RMAN) script

正确答案:D

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