单项选择题
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 Youareperformingadatabaserecoverybecauseauser’sschemaisdropped.Whileperformingtherecovery，youusetheUNTILSEQUENCEclause.Whichtypeofdatabaserecoveryareyouperforming？（）
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； }
单项选择题 Your database is running in ARCHIVELOG mode. The SCOTT.EMP table belongs to the DATA1 tablespace. The junior DBA erroneously runs a script that executes the following statement： SQL> DROP TABLE SCOTT.EMP PURGE； After one hour， you are performing the user managed incomplete recovery. Which datafiles will you restore from the last full backup？（）