You configured the flash recovery area in the database. Which two files would you expect to find in the flash recovery area？ （）

单项选择题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

单项选择题Youdecidedtochangethelocationoftheflashrecoveryarea.Youexecutedthefollowingcommand：Whichstatementistrue？（）

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.

单项选择题You executed the following query in your database：  FROM V$FLASHBACK_DATABASE_LOG  What would you determine from the output？（）

A.the time when the last flashback operation in your database was performed
B.the time when the first flashback operation in your database was performed
C.a list of flashback operations performed in your database using SCN and time
D.the approximate time and the lowest system change number （SCN） to which you can flash back your database

单项选择题You disabled the Flashback Database feature by using the following command：  SQL> ALTER DATABASE FLASHBACK OFF  What would be the effect of this command on the existing flashback logs？（）

A.Flashback logs are not deleted.
B.Flashback logs are deleted automatically.
C.Flashback logs are deleted only if you are using Recovery Manager （RMAN）.
D.Flashback logs are deleted only if you are using Oracle Managed Files （OMF）.
E.Flashback logs are deleted only if you are using Automatic Storage Management （ASM）.

单项选择题InwhichcasewouldyouusetheFlashbackDatabasefeaturetoperformarecovery？（）

A.to recover a dropped tablespace
B.to recover data from a truncated table
C.to recover a data file that has been shrunk
D.to recover a database to the state that existed before the RESETLOGS operation