单项选择题
A.trace file
B.audit trail
C.control file
D.alert log file
E.event viewer
单项选择题 YourdatabaseisintheNOARCHIVELOGmode.Sincelastnight’sofflinebackup，thelogsingroup1havebeenwrittentotwice.Thismorning，theSYSTEMdatafilehasbecomecorrupted.Uptowhatpointcanitberecovered？（）
单项选择题 Youhavetwodatabases，FINDBandPAYDB，onsingleoperatingsystemandusingOptimalFlexiblearchitecture（OFA）.FINDBisfunctionalandiscurrentlybeingaccessedbytheusers.WhilestartinguptheinstanceforthePAYDBdatabaseyougetthefollowingerror：ORA-01081：cannotstart-alreadyrunningORACLE-shutitdownfirstWhichenvironmentalvariablewouldyousetbeforestartingupthePAYDBdatabasetoovercomethiserror？（）
单项选择题 Youhavebeenaskedtocreatethreeusers，PUB1，PUB2andPUB3，forthreenewlyhiredemployeesandtoallocateunlimitedquotaontheirdefaulttablespacePUBLISHER_TBSwithnootherprivileges.Aftercreatingtheusers，whichmethodcanyouuseforgrantingtherequiredprivileges？（）