introduction backup and restore

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1、Module13IntroductiontoBackupandRestoreIntroductiontoBackupandRestore03-200313-1©2001,2003InternationalBusinessMachinesCorporationObjectivesAttheendofthismodule,youwillbeableto:®IdentifyIBMInformixbackupandrestoreutilities®Explainthebackupandrestoreprocess®Explaintheincrementalbackuple

2、vels®Explainthetwodifferentmethodstobackuplogicallogs®Describethedifferencebetweenawarmandcoldrestore13-213-2IntroductiontoBackupandRestoreIBMInformixBackupandRestoreUtilities¢ontape:®Basictapebackupandrestoresystem®Easytouse¢ON-Bar:®Parallelbackupandrestore®Easytouse®Requiresastorage

3、manager(providedinDynamicServer,Version7.3andinVersions9.2andgreater)®Enablespoint-in-timerecoveryforaserver13-3IBMInformixofferstwoutilitiestoperformsystembackups,logicallogbackups,andrestoreactivities.Youshouldchoosewhichutilityisbestforyouanduseitexclusively.Theontapeutilityoffersb

4、asicsystembackup,logbackup,andrestorecapabilityandisrunfromacommandline.Theontapeutilitymustbeexecutedbytheinformixlogin.ON-BarwasintroducedwithDynamicServer,Version7.21.ItworksinconjunctionwiththeIBMInformixStorageManager(ISM)thatisprovidedbythemostrecentversionsofDynamicServer.ON-Ba

5、rcanalsobeusedwithotherthird-partystoragemanagers.AnydevicessupportedbythestoragemanagercanbeusedforON-Barbackupandrestore.Inadditiontootherusefulfeatures,ON-Barenablesyoutorestoreaninstancetoaspecificpointintime.Regardlessoftheutilityselected,thegeneralbackupandrestoreprocessisthesam

6、eforbothutilities.Inthismodule,wewillexaminetheprocessofbackingupandrestoringanIBMInformixDynamicServerserverusingtheontapeutility.Warning!Thetwoutilities,ontapeandonbar,aremutuallyexclusive.Abackupmadebyoneutilitycannotberestoredusingtheotherutility.IntroductiontoBackupandRestore13-3

7、WhatisaBackup?Abackupistheprocessofcopyingall(ontapeorOn-Bar)orsome(On-Bar)databaseserverobjectstostoragedbspaces,sbspaces,andblobspacesDbspacebackupLogicalLogsLogicallogbackupBackupmediaDatabaseserver13-4Abackupistheprocessofcopyingeitherallorsomesubsetoftheserverdbspaces,blobspaces,

8、andlo