单项选择题

Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）

A. DBWn
B. RECO
C. RVWR
D. LGWR

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单项选择题

You are managing a single instance Oracle 10g database that utilizes the following parameters： Which of the following set of commands must you execute to enable Flashback Database？（）

A. STARTUP MOUNT EXCLUSIVE ALTER DATABASE FLASHBACK ON； ALTER DATABASE OPEN；
B. STARTUP MOUNT ALTER DATABASE FLASHBACK ON； ALTER DATABASE OPEN RESETLOGS；
C. STARTUP MOUNT EXCLUSIVE ATLER DATABASE ARCHIVELOG； ALTER DATABASE FLASHBACK ON； ALTER DATABASE OPEN RESETLOGS；
D. STARTUP MOUNT ALTER DATABASE ARCHIVELOG； ALTER DATABASE FLASHBACK ON； ALTER DATABASE OPEN；

单项选择题

You are performing a database recovery because a user’s schema is dropped. While performing the recovery， you use the UNTIL SEQUENCE clause. Which type of database recovery are you performing？（）

A. user managed complete recovery
B. user managed incomplete recovery
C. RMAN-based complete recovery
D. RMAN-based incomplete recovery

单项选择题

You are performing an incomplete recovery because a tablespace is dropped and purged from the Recycle Bin. In which mode will you execute the following code？（）
RMAN>RUN {
SET UNTIL SEQUENCE THREAD ；
RESTORE DATABASE；
RECOVER DATABASE；
}

A. NOMOUNT
B. MOUNT
C. OPEN
D. RESTRICTED