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1、AnOracleWhitePaperJanuary2015OracleActiveDataGuardvsStorageRemoteMirroringOracleActiveDataGuardvs.StorageRemoteMirroringExecutiveOverviewAcriticalobjectiveforanyenterpriseistheprotectionofcorporateassets,includingdata.Enterprisesareequallyconcernedabouttheimp
2、actofapplicationdowntimewhendatabasesbecomeunavailableduetooutagescausedbydatacorruptions,component,systemandsitefailure,orhumanerror.Increasedcost,lostrevenue,negativepublicity,andregulatorynon-compliancearejustafewofthemanynegativeconsequencesresultingfromd
3、atalossanddowntime.Eventhoughabullet-proofdisasterrecovery(DR)solutionofferstheultimateprotectionforenterprisedata,businessesoftendon’tplaceahighpriorityonDRduetothefactthatdisasterrecoveryinfrastructureisexpensiveandrarelyused.Thisleadstounder-investmentinDR
4、and/orthedeploymentofsolutionsthatprovideinadequateprotectionandlittleassurancethattheywillactuallyworkwhencalledupon.OracleDataGuardandActiveDataGuardfundamentallychangeswhatenterprisesshouldexpectfromaDRsolutionfortheOracleDatabase.Itprovidesthebestpossible
5、dataprotectionandapplicationavailabilityandsimultaneouslyreducesthecostofDRbyutilizingstandbysystemstooffloadproductionworkloadwhileinastandbyrole.DataGuard’sdeepintegrationwithOracleDatabasealsoenablesautomaticfailoverforunplannedoutagesanddatabaserollingupg
6、radestominimizedowntimeandriskwhenperformingplannedmaintenance.ThesecapabilitiesmakeDataGuardacomprehensivesolutionforHAandDR.ActiveDataGuardalsoeliminatestheriskinherentingenericdataprotectionofferedbystorage-centricsolutionssuchasarray-basedremotemirroring.
7、OnlyActiveDataGuardprovidescontinuousreal-timeapplicationlevelvalidationthattheDRsystemisreadyforfailoverifneeded.ThisbriefisintendedforI.T.ManagersandArchitectswhoareevaluatingdisasterrecoverysolutionsfortheOracleDatabaseanddescribeswhyDataGuardandActiveData
8、GuardarepreferredtotraditionalDRsolutionsbasedonstoragetechnologies.1OracleActiveDataGuardvs.StorageRemoteMirroringIntroduction:DataGuardandActiveDataGuardManagedStandby,theprecursortoDat
