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单选题Which components are needed for successful and most efficient recovery.（）AThe backup RB3 and the current online redo log filesBthe backup RB2 and the archived redo log files after the log sequence number 15622CBackup R81 and the archived redo log hies 

题目
单选题
Which components are needed for successful and most efficient recovery.（）
A

 The backup RB3 and the current online redo log files

B

 the backup RB2 and the archived redo log files after the log sequence number 15622

C

 Backup R81 and the archived redo log hies after the log sequence number 12871

D

 The backup RB3 and the archived redo log files after the log sequence number 16721

相似考题

1.You issued the following RMAN command to back up the database:Which two statements are true regarding the backup performed?()A. Archived redo log files are backed up along with data files.B. Only data files are backed up and a restore point named FY06Q4 is created.C. Archived log files are backed up along with data files, and the archived log files are deleted.D. The command creates a restore point named FY06Q4 to match the SCN at which this backup is consistent.

2.The RMAN BACKUP command using the DELETE INPUT option can be used with which three types of files？ （）A、data filesB、backup setsC、control filesD、archived redo log files

3. The instance abnormally terminates because of a power outage.  Which statement is true about redo log filesduring instance recovery（）A、Inactive and current redo log files are required to accomplish recovery.B、Online and archived redo log files are required to accomplish instance recovery.C、All redo log entries after the last checkpoint are applied from redo log files to data files.D、All redo log entries recorded in the current redo log file until the checkpoint position are applied to data files

4. You want the ability to recovery any time within the last seven days and therefore you configured the recovery window retention policy using the command：   RMAN> CONFIGURE RETENTIOH POLICY TO RKCOVFRY WINDOW OF 7 DAYS；   After configuring the recovery window， you performed the database backup as follows：（）  A、 Backup RB1 at log sequence number 12871 on 5th JanB、 Backup RB2 at log sequence number 15622 on 12th JanC、 Backup RB3 at log sequence 16721 on 15th JanD、 On 20th Jan when the log sequence number was 18112 you realize that there Is a need to a point in time at the beginning of the recovery window. You have all an hived redo log files to date.

更多“单选题Which components are needed for successful and most efficient recovery.（）A  The backup RB3 and the current online redo log filesB  the backup RB2 and the archived redo log files after the log sequence number 15622C  Backup R81 and the archived redo log”相关问题

  • 第1题：

    Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （）

    • A、A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. 
    • B、During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. 
    • C、After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. 
    • D、At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.

    正确答案:A

  • 第2题：

    When you are allowing RMAN to backup your archived redo log files，how does RMAN know which archived redo logs to back up from your archive log destination？（）

    • A、RMAN keeps a list of archive logs in a text file.
    • B、The DBA must manually tell RMAN which archive logs to backup.
    • C、RMAN has access to target control file and/or catalog information.
    • D、RMAN looks at the ARCHIVE_LOG_DEST parameter of your target database and backs up all archive logs found.

    正确答案:C

  • 第3题：

    ASM supports all but which of the following file types？（）

    • A、 Database files
    • B、 Spfiles
    • C、 Redo-log files
    • D、 Archived log files
    • E、 RMAN backup sets
    • F、 Password files
    • G、 init.ora files

    正确答案:F,G

  • 第4题：

    In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members.  Which two actions would you take to improve the performance of the database server？ （）

    • A、increase the size of the redo log buffer
    • B、increase the number of redo log groups
    • C、increase the number of log writer processes
    • D、increase the number of ARCn processes
    • E、change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location

    正确答案:B,E

  • 第5题：

    While performing the backup of the flash recovery area, you notice that one of the archived redo log files is missing. You have multiple destinations for archived redo log files. What implications does it have on the backup of the flash recovery area?（）

    • A、The backup fails because one of the archived redo log files is missing. 
    • B、The backup succeeds but it would be without the missing archived log. 
    • C、During backup, you are prompted for the alternative destination for the missing archived redo log file. 
    • D、The backup succeeds because it fails over to one of the alternative archived redo log destinations. 

    正确答案:D

  • 第6题：

    View the Exhibit.You executed the following command to perform a backup of the USERS tablespace： RMAN> BACKUP TABLESPACE USERS；  Which three types of files are backed up？ （）

    • A、 all the data files belonging to the USERS tablespace
    • B、 password file
    • C、 online redo log files
    • D、 the current control file
    • E、 archived redo log files
    • F、 the current server parameter file
    • G、 data files belonging to the USERS tablespace and all the default tablespaces

    正确答案:A,D,F

  • 第7题：

    多选题
    View the Exhibit.You executed the following command to perform a backup of the USERS tablespace： RMAN> BACKUP TABLESPACE USERS；  Which three types of files are backed up？ （）
    A

    all the data files belonging to the USERS tablespace

    B

    password file

    C

    online redo log files

    D

    the current control file

    E

    archived redo log files

    F

    the current server parameter file

    G

    data files belonging to the USERS tablespace and all the default tablespaces


    正确答案： G,F
    解析： 暂无解析

  • 第8题：

    单选题
    The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）
    A

    Inactive and current redo log files are required to accomplish recovery.

    B

    Online and archived redo log files are required to accomplish instance recovery.

    C

    All redo log entries after the last checkpoint are applied from redo log files to data files.

    D

    All redo log entries recorded in the current redo log file until the checkpoint position are applied to datafiles.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Redo log files are multiplexed in your database. The disk in which you have one of the redo log members is highly fragmented. In the process of defragmentation you lose the redo log member， which is not a member of the current group. How would you recover from the loss of the redo log member？（）
    A

    SMON would automatically restore the lost file.

    B

    You would need to restore the whole database from the last backup.

    C

    You would need to restore the file from the last full database backup.

    D

    You would need to use flashback technology to restore the lost redo log member.

    E

    You would need to use Recovery Manager （RMAN） to restore the lost redo log member.

    F

    You would need to restore the missing log file by copying one of the remaining files from the same group.


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    While performing the backup of the flash recovery area, you notice that one of the archived redo log files is missing. You have multiple destinations for archived redo log files. What implications does it have on the backup of the flash recovery area?（）
    A

    The backup fails because one of the archived redo log files is missing. 

    B

    The backup succeeds but it would be without the missing archived log. 

    C

    During backup, you are prompted for the alternative destination for the missing archived redo log file. 

    D

    The backup succeeds because it fails over to one of the alternative archived redo log destinations. 


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Your boss at Supportcenter.cn wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？ （）
    A

    Transactions are rolled back using redo log files.

    B

    Transactions are rolled forward using redo log files.

    C

    Transactions are rolled back using redo log files and archived log files.

    D

    Transactions are rolled forward using redo log files and rolled back using redo log files.


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    When you are allowing RMAN to backup your archived redo log files，how does RMAN know which archived redo logs to back up from your archive log destination？（）
    A

    RMAN keeps a list of archive logs in a text file.

    B

    The DBA must manually tell RMAN which archive logs to backup.

    C

    RMAN has access to target control file and/or catalog information.

    D

    RMAN looks at the ARCHIVE_LOG_DEST parameter of your target database and backs up all archive logs found.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    You have recovered your Oracle Database 10g by using the control file backup because all copies of the current control file have been lost due to a media failure. You open your database by using the following statement：       SQL>ALTER DATABASE OPEN RESETLOGS；   Which of the following options is true about using the RESETLOGS option？（）

    • A、 The log sequence is reset to 0.
    • B、 All the online redo logs are deleted.
    • C、 All the archived redo logs from a previous incarnation become useless.
    • D、 The full database backup taken from a previous incarnation can be used in future.
    • E、 Only the control file and online redo log files are updated with a new RESETLOGS SCN and time stamp.

    正确答案:D

  • 第14题：

    You performed an incomplete recovery and opened the database with the RESETLOGS option. The LOG_ARCHIVE_FORMAT parameter is set to ’ora_%t_%s_%r.log’.  Which statement regarding the archived redo log files， created in an earlier incarnation of the database，is true？（）

    • A、 The archived redo log files will be overwritten.
    • B、 The archived redo log files are deleted automatically.
    • C、 The archived redo log files should be moved to some other location.
    • D、 The archived redo log files are still maintained because the file names are unique.

    正确答案:D

  • 第15题：

    You have configured the flash recovery area to store online redo log files， control files， archived redo logs and RMAN backups. Which of the following files can you successfully delete from the flash recovery area if you want to reclaim the space within it？（）

    • A、 multiplexed control files
    • B、 RMAN obsolete backups
    • C、 multiplexed online redo log files
    • D、 archived redo logs that have not been copied to tape

    正确答案:B

  • 第16题：

    The instance abnormally terminates because of a power outage. Which statement is true about redolog files during instance recovery（）

    • A、Inactive and current redo log files are required to accomplish recovery.
    • B、Online and archived redo log files are required to accomplish instance recovery.
    • C、All redo log entries after the last checkpoint are applied from redo log files to data files.
    • D、All redo log entries recorded in the current redo log file until the checkpoint position are applied to datafiles.

    正确答案:C

  • 第17题：

    Your boss at Supportcenter.cn wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？ （）

    • A、Transactions are rolled back using redo log files.
    • B、Transactions are rolled forward using redo log files.
    • C、Transactions are rolled back using redo log files and archived log files.
    • D、Transactions are rolled forward using redo log files and rolled back using redo log files.

    正确答案:B

  • 第18题：

    多选题
    In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members.  Which two actions would you take to improve the performance of the database server？ （）
    A

    increase the size of the redo log buffer

    B

    increase the number of redo log groups

    C

    increase the number of log writer processes

    D

    increase the number of ARCn processes

    E

    change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location


    正确答案： B,E
    解析： 暂无解析

  • 第19题：

    单选题
    You have configured the flash recovery area to store online redo log files， control files， archived redo logs and RMAN backups. Which of the following files can you successfully delete from the flash recovery area if you want to reclaim the space within it？（）
    A

     multiplexed control files

    B

     RMAN obsolete backups

    C

     multiplexed online redo log files

    D

     archived redo logs that have not been copied to tape


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    You performed an incomplete recovery and opened the database with the RESETLOGS option. The LOG_ARCHIVE_FORMAT parameter is set to ’ora_%t_%s_%r.log’.  Which statement regarding the archived redo log files， created in an earlier incarnation of the database，is true？（）
    A

     The archived redo log files will be overwritten.

    B

     The archived redo log files are deleted automatically.

    C

     The archived redo log files should be moved to some other location.

    D

     The archived redo log files are still maintained because the file names are unique.


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    You want the ability to recovery any time within the last seven days and therefore you configured the recovery window retention policy using the command：   RMAN> CONFIGURE RETENTIOH POLICY TO RKCOVFRY WINDOW OF 7 DAYS；   After configuring the recovery window， you performed the database backup as follows：（）
    A

     Backup RB1 at log sequence number 12871 on 5th Jan

    B

     Backup RB2 at log sequence number 15622 on 12th Jan

    C

     Backup RB3 at log sequence 16721 on 15th Jan

    D

     On 20th Jan when the log sequence number was 18112 you realize that there Is a need to a point in time at the beginning of the recovery window. You have all an hived redo log files to date.


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    The instance abnormally terminates because of a power outage.  Which statement is true about redo log filesduring instance recovery（）
    A

    Inactive and current redo log files are required to accomplish recovery.

    B

    Online and archived redo log files are required to accomplish instance recovery.

    C

    All redo log entries after the last checkpoint are applied from redo log files to data files.

    D

    All redo log entries recorded in the current redo log file until the checkpoint position are applied to data files


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （）
    A

    A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. 

    B

    During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. 

    C

    After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. 

    D

    At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.


    正确答案： A
    解析： 暂无解析

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