You are working as a DBA on Oracle Database 9i. You plan to upgrade your 9i database to Oracle 10g. To be familiar with the new database technology， you decide to install Oracle Database 10g on your workstation at home. You create a general purpose database.  
After the installation， you make the following changes in your initialization parameter file：LOG_ARCHIVE_DEST_1=’LOCATION=USE_DB_RECOVERY_FILE_DEST’  
DB_RECOVERY_FILE_DEST =   
’LOCATION=d：\product\10.1.0\flash_recovery_area’ 
DB_RECOVERY_FILE_DEST_SIZE=10g  
Where are the archived redo logs stored for your database？（）

单项选择题Youhaveconfiguredtheflashrecoveryareatostoreonlineredologfiles，controlfiles，archivedredologsandRMANbackups.Whichofthefollowingfilescanyousuccessfullydeletefromtheflashrecoveryareaifyouwanttoreclaimthespacewithinit？（）

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

单项选择题Your Oracle Database 10g is online when you execute the following statement：        SQL>ALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF；   What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（）

A. The database does not record flashback logs for MY_TABLESPACE
B. The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.
C. All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.
D. None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE

单项选择题At10：30A.M.，youranabatchjobbymistake，whichexecutedatransactioninthedatabase.Thetransactionidentifierofthetransactionthatmadetothechangesinthedatabaseis0500A00627B000.At11：10A.M.，youstoppedthebatchjob.Now，youwanttoidentifythechangesmadetothedatabasetablesbythebatchjob.Whichviewwillyouquery？（）

A. DBA_PENDING_TRANSACTIONS
B. DBA_AUDIT_STATEMENT
C. V$FLASHBACK_DATABASE_STATS
D. FLASHBACK_TRANSACTION_QUERY

多项选择题YouaremaintainingadatabasethatisinARCHIVELOGmode.Youhaveconfiguredtheflashrecoveryareainyourdatabase.ThedatabaseisinMOUNTEXCLUSIVEmode，andyouwanttoconfiguretheFlashbackDatabasefeature.WhichtwooptionsareNOTrequiredtoconfiguretheFlashbackDatabasefeature？（）

A. Open the database in read-only mode.
B. Set the retention target with the DB_FLASHBACK_RETENTION_TARGET initialization parameter.
C. Enable the block change tracking feature.
D. Execute the ALTER DATABASE FLASHBACK ON statement.

单项选择题You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema.   Which process writes the before images of the physical database blocks to the flashback database logs？（）

A. LGWR
B. DBWR
C. MMON
D. RVWR