单项选择题YouworkasadatabaseadministratorforSupportcenter.cn.Inyourorganization,youhavefourdatabases,SupportCenterDB01,SupportCenterDB02,SupportCenterDB03,andSupportCenterDB04,whicharelocatedinBerlin,Frankfurt,Rammstein,andMunichrespectively,andwhichwerecreatedusingDatabaseConfigurationAssistant(DBCA).Youwanttoperformadministrativetasksonthesedatabasesthatincludestartupandshutdown,takingregularbackups,andsoon,fromFrankfurtusingOracletools.WhichOraclefilewouldyouenabletoperformthistask?()A.ControlfileB.PasswordfileC.ParameterfileD.OnlineredologfileE.ListenercontrollerfileF.Serverparameterfile
单项选择题YouareshrinkingtheSCOTT.EMPtablebyexecutingtheALTERTABLESCOTT.EMPSHRINKSPACECASCADEstatement.WhatisaprerequisiteforshrinkingtheSCOTT.EMPtable?()
单项选择题Yourdatabaseblocksizeis4KB.Inthisdatabase,youarerequiredtocreateatablespacewithablocksizeof8KB.Whichistheprerequisiteforcreatingthistablespace?()
单项选择题YouneedtocreateaJavaBeanobjectthatisusedonlywithinthecurrentJSPpage.ItmustNOTbeaccessibletoanyotherpageincludingthosethatthispagemightimport.WhichJSPstandardactioncanaccomplishthisgoal?()
单项选择题1.classAnimal{AnimalgetOne(){returnnewAnimal();}}2.classDogextendsAnimal{3. insertcodehere4.}5.6.classAnimalTest{7.publicstaticvoidmain(String[]args){8.Animal[]animal={newAnimal(),newDog()};9.for(Animala:animal){10.Animalx=a.getOne();11.}12.}13.}和代码:3a.DoggetOne(){returnnewDog();}3b.AnimalgetOne(){returnnewDog();}第3行中插入的哪项将编译且运行无异常?()A.3a行B.3b行C.3a行或3b行D.既非3a,也非3b