单选题You have configured the following：  RMAN> CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’； new RMAN configuration parameters：  CONFIGURE DEFAULT DEVICE TYPE TO ’sbt’； new RMAN configuration parameters are successfully stored RMAN> SHOW DEVICE TYPE； RMAN configu

第1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

第2题：

Identify the persistent configuration setting for the target database that can be set for the backup by using RMAN.（）

• A、Backup retention policy
• B、Default backup device type
• C、Default destinations for backups
• D、Multiple backup device types for single backup
• E、Default section size for backups

第3题：

You configured the default backup device type as disk for RMAN backups. In your database，because of business requirements，you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this？（）  

• A、 MAXSETSIZE TO 2
• B、 DEVICE TYPE DISK PARALLELISM 2
• C、 RETENTION POLICY TO REDUNDANCY 2
• D、 DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2

第4题：

Identify the persistent configuration setting for the target database that can be set for the backup by using RMAN.（） (Choose all that apply.)

• A、Backup retention policy
• B、Default backup device type
• C、Default destinations for backups
• D、Multiple backup device types for single backup
• E、Default section size for backups

第5题：

You execute the following command to perform a backup by using Recovery Manager （RMAN）： RMAN> run  {allocate channel c1 type sbt;  backup datafile 1;  }  The command errors out. A part of the error message is as follows：  RMAN/x7f03009： failure of allocate command on c1 channel  ORA/x7f19554： error allocating device， device type： SBT_TAPE， device name：  What could explain why the statement failed？（）

• A、sbt is not a valid device type.
• B、Media Management Library was not loaded.
• C、The sbt device cannot be used for data file backups.
• D、No path was defined in the ALLOCATE CHANNEL command.
• E、The channel is currently being used by another RMAN session.

第6题：

You are performing a backup of your database across the network. While taking the backup， you want to save space on the storage media and reduce the network bandwidth. Which command will you issue to configure the required type of backup？（）

• A、 CONFIGURE DEVICE TYPE TO sbt BACKUP TYPE TO BACKUPSET；
• B、 CONFIGURE DEVICE TYPE TO disk BACKUP TYPE TO COPY；
• C、 CONFIGURE DEVICE TYPE TO sbt BACKUP TYPE TO COMPRESSED BACKUPSET；
• D、 CONFIGURE DEVICE TYPE TO sbt BACKUP TYPE TO COMPRESSED COPY；

第7题：

You set the recovery window to seven days and the backup optimization to ON using the CONFIGURE command of Recovery Manager （RMAN）. The most recent backup of the TOOLStablespace to disk was taken on January 3. The TOOLStablespace is read-only.On February 21， when you execute a command to back up all the tablespaces to disk， you find that RMAN backs up the TOOLS tablespace also， even though the contents of the tablespace have not changed after the backup on January 3. Because there are no changes made to the TOOLStablespace， you decide that the tablespace should not be backed up by RMAN. What can you do to skip backing up the TOOLStablespace without changing the current backup optimization setting？（）

• A、 configure a default device for RMAN backups
• B、 temporarily disable the retention policy for RMAN backups
• C、 configure automatic channel allocation for RMAN backups
• D、 use the CONFIGURE command to reconfigure the recovery window to 60 days

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第13题：

Which statement is true regarding RMAN components？（）

• A、Each target database requires its own recover catalog. 
• B、RMAN scripts can be stored in the recovery catalog or the target control file. 
• C、A channel is a stream of data to a device type and corresponds to one server session. 
• D、The RMAN executable interprets sever session commands and establishes connections to the target database.

第14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

第15题：

You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 MB each. To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Identify the appropriate configuration to accomplish faster and optimized backups using the above command.（）

• A、The SBT channel must be configured, with the MAXPIECESIZE set to 300 mb.
• B、The SBT channel must be configured, with the parallelism setting for the SBT devices set to 3.
• C、The COMPATIBLE initialization parameter for the database instance must be set to at least 10.0.
• D、The SBT channel must be configured, with the default parallelism setting for the SBT devices set to 1

第16题：

In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT '/home/oracle/disk1/%U'; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT '/home/oracle/disk2/%U'; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（）

• A、Only one channel is allocated and the backup is created in the flash recovery area
• B、Only one channel is allocated and the backup is created in the destination specified for channel 1
• C、Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2
• D、Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA

第17题：

You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 MB each. To accomplish the backup， you issued the following RMAN command：   RMAN>BACKUP SECTION SIZE 300M TABLESPACE users；   What configuration should be effected to accomplish faster and optimized backups by using the above command？（）

• A、 The SBT channel must be configured， with the default parallelism setting for the SBT device set to 1
• B、 The COMPATIBLE initialization parameter for the database instance must be set to at least 10.0
• C、 The SBT channel must be configured， with the parallelism setting for the SBT device set to 3
• D、 The SBT channel must be configured， with the MAXPIECESIZE set to 300 MB

第18题：

You notice that your RMAN script used to copy the datafiles， control files， and archived redo log files is performing very slowly. Which two changes might you want to include in your RMAN script to speed up the COPY commands？（）

• A、NOCHECKSUM
• B、MAXCORRUPT
• C、CHECK LOGICAL
• D、BACKUP INCREMENTAL
• E、CONFIGURE DEVICE TYPE ... PARALLELISM

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