单项选择题
What command is used to reset a database to a previous incarnation？（）
A. reset incarnation B. incarnation reset C. reset database to incarnation D. reset database incarnation E. reset databse incarnation number
单项选择题 Howmanydatabaseinstancesareusedduringadatabase-duplicationprocess？（）
单项选择题 Which of the following commands will perform an active database duplication of the ORCL database to the ORCL2 database？（）
单项选择题 Whenyoureperformingactivedatabaseduplication，abackupofwhatkindisrequired？（）
