Adatafilebecamecorruptedinyourdatabaseduetobadsectorsonthedisk.Becauseofcorruption,youlostalltheimportanttablesinthatdatafile.Whichmethodwouldyouuseforrecovery?()
A. flashbackallthetablesinthedatafile,onebyone
B. restorethedatafiletoanewlocationandperformamediarecovery
C. flashbackthedatabasethereisnoneedtorestorethedatafile
D. restorethedatafilefromthemostrecentbackupandflashbackthedatabase
查看答案
WhilecreatingaschedulerwindowusingtheDBMS_SCHEDULERpackage,auserloggedinasDBMGRgetstheerrormessageinsufficientprivileges.Whichtwocommandswouldyouusetoresolvethiserror?()
A. GRANTdbaTOdbmgr
B. GRANTconnectTOdbmgr
C. GRANTresourceTOdbmgr
D. GRANThs_admin_roleTOdbmgr
E. GRANTmanageschedulerTOdbmgr
下列对实践的理解错误的是()
A. 实践是物质世界分化与统一的现实基础
B. 实践是人能动地改造客观世界的精神性活动
C. 实践是联系主体与客体的中介,是检验认识活动是否为真理的唯一标准
D. 实践是人的存在方式
Whichtypeofbackupmustbeperformedfirstwithanincrementalbackup?()
A. Level1
B. Level0
C. Level2
D. Level3
Considerthefollowingcommand:Backupdatabaseplusarchivelogdeleteinput;Howmanybackupsetswouldbecreatedbythiscommandifthefollowingweretrue:()Control-fileaNNutobackupswereenabled.NNThesizeofbackupsetswasnotrestricted.NNOnechannelwasallocated.
A. 1
B. 2
C. 3
D. 4
E. 5