单项选择题
A. Open the database in NORMAL mode
B. Open the database in read-only mode
C. Open the database in RESTRICTED mode
D. Open the database with the RESETLOGS option
单项选择题 YouaretuningRMANtooptimizeperformance.YouwanttapeI/Otobeasynchronouswhenyouperformtapebackups.Whichactionshouldyoutake？（）
单项选择题 In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT /home/oracle/disk1/%U; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT /home/oracle/disk2/%U; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（）
多项选择题 You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two).