单项选择题
A.Datafiles
B. Current control file
C. Server parameter file （spfile）
D. Password file
多项选择题 Your database in running in the ARCHIVELOG mode. You issue the following command to back up datafile 2 in your database. RMAN> COPY DATAFILE 2 TO ’D：\ORACLE\ORA90\MYNEWDB\DA2.DBF’； Which two statements are true regarding the backup created using this command？（）
单项选择题 YouhaveconfiguredOMFinyourdatabase.YouenabledtheALTERDATABASEENABLEBLOCKCHANGETRACKING；statementtoenabletheblockchangetrackingfeature.Whatinformationwillbewritteninthechangetrackingfile？（）
单项选择题 In which scenario， will you issue the following command？（） RMAN> REPORT NEED BACKUP DAYS 7；