单项选择题
A. 2, 7, 3, 5, 1, 6, 4
B. 2, 1, 7, 6, 3, 5, 4
C. 7, 1, 3, 2, 6, 5, 4
D. 7, 2, 3, 1, 4, 6, 5
单项选择题 Youareworkingonadatabase,whereyouhavethreeredologgroups.Whenthedatabaseisdownforabackup,anoperatingsystem(OS)userdeletesalltheredologfilesinagroup.Whatwillhappenwhenyouopenyourdatabase?()
单项选择题 Youhaveonlytworedologgroupsandthesegroupsgetoverwrittenseveraltimesinaday.Your databaseoperatesinNOARCHIVELOGmodeanduser-managedconsistentbackupsareperformedeverySundaynight.OnThursdaymorning,youfindthatanimportanttablehasbeendroppedandpurged.Withreferencetothisscenario,uptowhatpointintimecanthedataberecovered?()
单项选择题 YouconfiguredthelargepoolforOraclebackupandrestoreoperations.Asaresult,whichcomponentwouldrequirelessmemory?()