单项选择题
A. UNTIL CANCEL
B. UNTIL SCN
C. UNTIL SEQUENCE
D. UNTIL TIME
单项选择题 YouaremaintainingyourdatabaseinOracle10g.Youareperforminganincompleterecoverybecausethetablespace，DATA1，wasdroppedandpurgedfromtheRecycleBin.Afterperforminganincompleterecovery，youopenthedatabasewiththeRESETLOGSoption.WhatwillNOTbetheimpactofusingtheRESETLOGSoption？（）
单项选择题 Youissuedthefollowingstatement：SQL>ALTERDATABASEBACKUPCONTROLFILETOTRACE；Whatwillbetheresultofissuingthestatement？（）
单项选择题 YouaremaintainingthedatabaseinOracle10g.YouareperforminganincompleterecoverybyusingRMANbecauseanimportanttable，EMPLOYEE，isdroppedandpurgedfromtheRecycleBin.WhichstatementisNOTtrueregardinganincompleterecovery？（）