单项选择题
What view would you use to determine if a given tablespace is fully self-contained for the execution of a tablespace point-in-time recovery？（）
A. TS_CHECK B. TPITR_CHECK C. TS_PITR_CHECK D. CHECK_TSPITR E. PITR_TS_CHECK
单项选择题 Whatcommandisusedtoresetadatabasetoapreviousincarnation？（）
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？（）
