题目内容

Youareworkinginanonlinetransactionprocessing（OLTP）environment.YouusedtheFLASHBACKTABLEcommandtoflashbacktheCUSTOMERStable.BeforeexecutingtheFLASHBACKTABLEcommand，theSystemChangeNumber（SCN）was663571.AfterflashingbacktheCUSTOMERStable，yourealizethatthetableisnotinthecorrectstateandtheresultantchangesarenotwhatyouhaddesired.So，youneedtoreversetheeffectsoftheFLASHBACKTABLEcommandwhileensuringthat：
a）Nootheruserdatainthedatabaseisaffected.
b）Theoperationtakestheminimumpossibletime.
Whichoptionwouldyouchoose？（）

查看答案

搜索结果不匹配？点我反馈

更多问题

干燥介质干燥物料后离开干燥器其湿含量增加，温度也上升。

在一定的干燥条件下，物料愈厚，则临界含水量就愈大，而干燥至同一含水量所需的时间就愈长。

连续精馏预进料时，先打开放空阀，充氮置换系统中的空气，以防在进料时出现事故。

YouareusingRecoveryManager（RMAN）witharecoverycatalogtobackupyourproductiondatabase.Thebackupsandthearchivedredologfilesarecopiedtoatapedriveonadailybasis.Becauseofmediafailure，youlostyourproductiondatabasecompletelyalongwiththerecoverycatalogdatabase.Youwanttorecoverthetargetdatabaseandmakeitfunctional.Youcouldconsiderperformingthefollowingstepstoaccomplishthistask：
1）Restoreanautobackupoftheserverparameterfile.
2）Restorethecontrolfile.
3）StartthetargetdatabaseInstance.
4）Mountthedatabase.
5）Restorethedatafiles.
6）OpenthedatabasewiththeRESETLOGSoption.
7）Recoverthedatafiles.
8）SetDBIDforthetargetdatabase
Whichoptionillustratesthecorrectsequencethatyoumustuse？（）