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 withi

第1题：

You executed the following command to perform a backup of the USERS tablespace：  SQL> ALTER TABLESPACE users BEGIN BACKUP； ALTER TABLESPACE users BEGIN BACKUP *  ERROR at line 1：  ORA-01123： cannot start online backup； media recovery not enabled  What could be the reason for this error（）

• A、The MTTR Advisor is disabled.
• B、The database is in NOARCHIVELOG mode.
• C、The tablespace is already in backup mode.
• D、The Flash Recovery Area is not configured.

第2题：

You decided to change the location of the flash recovery area. You executed the following command：   ALTER SYSTEM SET DB_RECOVERY_FILE_DEST=’+disk1’ SCOPE=BOTH SID=’*’；   Which statement is true？（）

• A、 The location can be changed only if the flash recovery area is empty.
• B、 After executing the command， all new flash recovery area files will be created in the new location.
• C、 The command will generate an error because you cannot change the flash recovery area while the database is open.
• D、 All the existing files in the flash recovery area will be moved to the new location and all new Flash Recovery Area files will be created in the new location.

第3题：

第4题：

You performed a backup of the flash recovery area by using the following command for the first time： RMAN> BACKUP RECOVERY AREA;  Which files in the flash recovery area are backed up？（）

• A、flashback logs
• B、current control file
• C、control file autobackups
• D、incremental backup sets

第5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

第6题：

You are maintaining an OLTP database in Oracle10g. You have configured the Flash Recovery Area in your database. The Flash Recovery Area is full because you have set the retention policy to NONE. What will you do to resolve the problem？（）

• A、 Increase the value of the FAST_START_MTTR_TARGET initialization parameter.
• B、 Increase the value of the DB_RECOVERY_FILE_DEST_SIZE parameter.
• C、 Increase the value of the PGA_AGGREGATE_TARGET initialization parameter.
• D、 Increase the value of the SGA_TARGET initialization parameter.

第7题：

You decided to configure the flash recovery area in your database to centralize the storage of all the recovery files in a certain location on disk. Which two parameters will you specify in the init.ora file？（）

• A、 DB_CREATE_FILE_DEST
• B、 DB_RECOVERY_FILE_DEST
• C、 DB_RECOVERY_FILE_DEST_SIZE
• D、 DB_ONLINE_LOG_DEST_n

第8题：

You enabled the flashback logging feature， but you have not specified the location of the flash recovery area.  Which location would be used as the default location for the flash recovery area？（）

• A、the location used for control files
• B、the location used for redo log files
• C、the location set by using $ORACLE_BASE
• D、the location set by using $ORACLE_HOME
• E、the location set by using CORE_DUMP_DEST
• F、the location set by using BACKGROUND_DUMP_DEST

第9题：

ou are using the flash recovery area （fast recovery area in 11g Release 2） to store backup related files in your database. After regular monitoring of space usage in the Mash recovery area. You realize that the flash recovery area is （jetting filled up very fast and it is running out of space.  Your database flash recovery area is low on specie and you have no more room on disk. Proactively， which two options could you use to make more space available in the flash recovery（）

• A、 Change the RMAN archived log deletion policy.
• B、 Use the RMAN CROSSCHECK command to reclaim the archived log space.
• C、 Change the RMAN retention policy to retain backups for a shorter period of time.
• D、 Use OS command to move files from the flash recovery area to some other location.

第10题：