未知题型

A.theCONVERTcommandofRMAN
B.DataPumpExportandImportintothesamedatabase
C.conventionalexportandimportintothesamedatabase
D.theBACKUPDATABASEandRESTOREDATABASEcommandsofRMAN
E.theBACKUPASCOPYDATABASEandSWITCHDATABASETOCOPYcommandofRMAN
【参考答案】

A, E