You have enabled backup optimization for the RMAN environmen

第1题：

In which scenario， will you issue the following command？（） RMAN> REPORT NEED BACKUP DAYS 7；

• A、 to configure RMAN to maintain backup information in the RMAN repository for seven days
• B、 to configure RMAN to maintain backup information in the control file for at least seven days
• C、 to display the list of files that have not been backed up for the last seven days
• D、 to display the list of files that must be backed up within seven days

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：

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：

You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy：   CONFIGURE RETENTION POLICY TO REDUNDANCY 3；   Which statement is true？（）  

• A、 The command fails because you cannot configure a redundancy-based retention policy when backup  optimization is enabled
• B、 Backup optimization is performed， but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up
• C、 Backup optimization is permanently disabled
• D、 Backup optimization is temporarily disabled because a redundancy-based retention policy is specified

第6题：

In which scenario will you perform a cancel-based recovery？（）

• A、 when a tablespace is dropped and you have only RMAN-based backup of the database
• B、 when a table is dropped and stored in the Recycle Bin
• C、 when you are required to recover an existing table to its previous state
• D、 when a tablespace is dropped and you have only a user-managed full backup of the database

第7题：

Consider the following scenario for your database: - Backup optimization is enabled in RMAN. - The recovery window is set to 7 days in RMAN. - The most recent backup to disk for the TOOLS tablespace was taken on November 3, 2007. - The TOOLS tablespace is read-only since November 4, 2007. On November 23, 2007, you issue the RMAN command to back up the database to disk. Which statement is true regarding the backup of the TOOLS tablespace?（）

• A、The RMAN backup fails because the TOOLS tablespace is read-only
• B、The RMAN skips the backup of the tablespace because backup optimization is enabled
• C、The RMAN makes backup because optimization can be enabled only for backups to disk
• D、The RMAN makes the backup because no backup of the tablespace exists within the seven day window

第8题：

You have enabled backup optimization for the RMAN environment.Identify two criteria on which RMAN will skip the file, if it has already been backed up.（）

• A、The data file backup is done with multiple channels
• B、The data files is in the read-write mode after being backed up in the read only mode
• C、The backup was taken after the data files was taken offline-normal or is in the read only mode
• D、The data file backup complies with the back retention policy and the backup duplexing feature

第9题：

Your database is running in the ARCHIVELOG mode. You have configured RMAN for backup and recovery operations. You execute the following command from the RMAN prompt：   RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON；   After executing this command， in which of the following cases will RMAN make an auto-backup of the control file？ （）

• A、 when you change the name of a datafile
• B、 when you drop a table from the database
• C、 when you take an export of the database
• D、 when you back up the database using OS utilities
• E、 when you issue an ALTER SYSTEM SWITCH LOGFILE statement
• F、 when you issue a BACKUP command from inside the RMAN run block

第10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