多选题Identify the channel settings that can be performed using the CONFIGURE CHANNEL or ALLOCATE CHANNEL commands in RMAN ？（）ALimiting the input/output （I/O） bandwidth consumptionBSpecifying the size of backup sets and backup piecesCSpecifying vendor-specif

第1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

第2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3题：

Identify the channel settings that can be performed using the CONFIGURE CHANNEL or ALLOCATE CHANNEL commands in RMAN ？（）

• A、 Limiting the input/output （I/O） bandwidth consumption
• B、 Specifying the size of backup sets and backup pieces
• C、 Specifying vendor-specific information for a media manager
• D、 Specifying the parallelism for backup and restore operations

第4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 the RMAN. To accomplish the backup， you issued the following RMAN command：   RMAN> BACKUP SECTION SIZE 300M TABLESPACE users；   Which two statements are true regarding the execution of the above command？（）

• A、 The RMAN parallelizes the backup although the parallelism is not set for a channel.
• B、 The backup piece size will be limited to 300 MB.
• C、 The operation is accomplished using the default channel available.
• D、 Three channels for the tape drive must be configured by setting the parallelism to three.

第5题：

View the Exhibit and examine the output. You execute the following RMAN command to perform the backup operation：   RMAN> RUN { ALLOCATE CHANNEL c1 DEVICE TYPE disk MAXOPENFILES 8； BACKUP DATABASE FILESPERSET 4； }   What is the multiplexing level in the preceding backup process？（）

• A、 4
• B、 8
• C、 7
• D、 0

第6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7题：

Consider the following command：  Backup database plus archivelog delete input；  How many backup sets would be created by this command if the following were true：（）  Control-file a NN uto backups were enabled.  NN The size of backup sets was not restricted.  NN One channel was allocated.  

• A、 1
• B、 2
• C、 3
• D、 4
• E、 5

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第13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14题：

Identify the channel settings that can be performed using the CONFIGURE CHANNEL or ALLOCATECHANNEL commands in RMAN（） (choose all that apply)

• A、Limiting the input/output (I/O) bandwidth consumption
• B、Specifying the size of backup sets and backup pieces
• C、Specifying vendor-specific information for a media manager
• D、Specifying the parallelism for backup and restore operations

第15题：

Examine the following RMAN script: RMAN> run { debug on; allocate channel c1 type disk; backup datafile 5; } 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

第16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17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18题：

Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to the tape drive fast enough.What could be a solution to make tape streaming happen during the backup?（）

• A、Configure backup optimization
• B、Configure the channel to increase MAXOPENFILES
• C、Configure the channel to increase the capacity with the RATE parameter
• D、Configure the channel to adjust the tape buffer size with the BLKSIZE option

第19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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