多选题You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database. Which two statements are true about this backup operation? （）(Choose two.)ABackup compression should be enabledBParallelism for t

第1题：

You want to take a complete database backup using RMAN. The backup should consist onlythe used blocks from your database. Which two statements are true about this backup operation？（） 

• A、 Backup compression should be enabled
• B、 Parallelism for the channel should be set to 2
• C、 All the files must be backed up as backup sets
• D、 The backup may be stored either on disk or on media with media manager

第2题：

Your database runs in NOARCHIVELOG mode， and is backed up every night using RMAN scripts. However， last night your assistant DBA performed a manual operating system backup， instead of running the scripts. Today your database crashed and you now want to use the backups from last night. What do you need todo？（）

• A、You need to perform the restore and recover operations manually, because the backup was made manually. 
• B、First you need to resynchronize the catalog with the control file, and then you can use RMAN to recover the database. 
• C、First you need to add the backup to the catalog using the CATALOG command, and then you can use RMAN to recover the database. 
• D、You can just use RMAN and recover the database, because RMAN automatically updates the catalog with the backup information. 

第3题：

第4题：

You have a read/x7fonly tablespace on read/x7fonly media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read/x7fonly tablespace was read/write when the control file was backed up. What should you consider？（）

• A、drop the read­only tablespace and re­create the tablespace after recovery
• B、take data files from the read­only tablespace offline before performing a recovery
• C、perform a recovery; status of the tablespace in control file will be changed automatically
• D、recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database

第5题：

You are managing an Oracle Database 11g database. You want to take the backup of MULT_DATA， a big file tablespace of size 100 TB on tape drive， but you have tapedrives of only 10 GB each.  Which method would accomplish the task quickly and efficiently？（）  

• A、 parallel image copy backup
• B、 backup with MAXPIECESIZE configured for the channel
• C、 parallel backup with MAXPIECESIZE configured for the channe
• D、 intrafile parallel backup

第6题：

You are performing backup and recovery operations by using RMAN. You are using a recovery catalog for the RMAN repository. You are planning to migrate to ASM disk storage to enable new disks to be added to the database without shutting down the database.   Which information is NOT required during the migration process？（）

• A、 Database Identifier （DBID）
• B、 names and location of datafiles
• C、 names and location of control files
• D、 names and location of online redo log files

第7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8题：

第9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10题：

ou are managing an Oracle Database 11g database. You want to take the backup of MULT_DATA, a big file tablespace of size 100 TB on tape drive, but you have tapedrives of only 10 GB each. Which method would accomplish the task quickly and efficiently?（）

• A、parallel image copy backup 
• B、backup with MAXPIECESIZE configured for the channel 
• C、parallel backup with MAXPIECESIZE configured for the channel 
• D、intrafile parallel backup