多项选择题
A.Failure when no standby database is configured
B.Failure because a data file is renamed accidentally
C.Failure that requires no archive logs to be applied for recovery
D.Failure due to loss of connectivity-for example， an unplugged disk cable
单项选择题 Your database is functional with a peak load for the last one hour. You want to preserve the performancestatistics collected during this period to be used for comparison when you analyze the performance of thedatabase in the future. What action would you take to achieve this task（）
单项选择题 View the Exhibit. You are creating an additional database by using the Database Configuration Assistant（DBCA）. You opted to create a General Purpose database and during the database creation realize that theBlock Size field is not enabled. What could be the reason for this（）
多项选择题 WhichstatementsaretrueregardingtheOracleDataPumpexportandimportoperations（）