CON6677 RMAN Tips and Tricks...•Plus, storage operations involved to restore older snapshot and...

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Oracle Recovery Manager TipsandTricksforOn-PremisesandCloudDatabasesCON6677

MarcoCalmasiniSr.PrincipalProductManager,Oracle

GaganSingh,Sr.DatabaseArchitect,Intel


SafeHarborStatementThefollowingisintendedtooutlineourgeneralproductdirection.Itisintendedforinformationpurposesonly,andmaynotbeincorporatedintoanycontract.Itisnotacommitmenttodeliveranymaterial,code,orfunctionality,andshouldnotberelieduponinmakingpurchasingdecisions.Thedevelopment,release,andtimingofanyfeaturesorfunctionalitydescribedforOracle’sproductsremainsatthesolediscretionofOracle.

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ProgramAgenda

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RecoveryManagerHistory

RMANNewFeatures&Enhancements

RMANandDataDeduplication

RMANCloudModule

OracleSecureBackup12.2

RMANfor RecoveryAppliance,IntelExperience

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Oracle8,Oracle8i,Oracle9i

Circa1997-2002

Oracle10g,Oracle11gCirca2003-2012

Oracle12cToday

••ParallelBackups••DUPLICATE••BlockMediaRecovery••AutomaticControlFile&SPFILEBackup••CONFIGUREPersistentSettings••BACKUPBACKUPSET••Andmore…

••FastRecoveryArea••FastIncrementalBackups••IncrementallyUpdatedBackups••SWITCHTOCOPY••OffloadBackupstoStandbyDatabase••Andmore…

••TableLevelRecovery••Cross-PlatformBackup&Recoveryenhancements••FastActiveDUPLICATE••FastStandbyDatabaseSynchronization••MultitenantDatabaseBackup&Recovery••Andmore..


RMAN

RMANBeyondtheBackupUtility

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RMAN

CloningandPlatformMigration

DataGuard

Backuptodisk

Backuptocloudstorage

OracleSecureBackupor3rdpartybackupapplications

OracleZeroDataLossRecoveryAppliance


ProgramAgenda

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RMANCloudModule


RMANforRecoveryAppliance,IntelExperience

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RMANandDataDeduplication• Hash-baseddeduplication solutions

– WorkwellforgenericfilesnotsogoodforOracleDBs– Singledigitdedup ratiosforRMANbackups– Longfullbackupwindows,slowrestore(re-hydration)

• IncrementalMerge-basedsolutions– BasedonstandardRMANfeature– Fastdataaccessforrecovery,butslowrestore– Incrementalforever-likebackups,butDBserverresourcesareusedbymergeprocess

• OracleRecoveryAppliance– Trueincrementalforever– basedonOracleblockchanges– MinimalloadonDBserver– nofullbackupwindowandresources– ZerotoSub-SecondRPO– real-timechangescapturedinbackupviaredotransport

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• Backupstreamisdividedinvariable-lengthchunks

• Hashingalgorithmisappliedtochunkstocalculatehashvalues

• Hasharestoredinadatabaserunningoncontroller

• Hashdatabaseischeckedtodetermineifchunkisuniqueorduplicate

• Ifduplicate,dataarediscardedandreplacedwithapointer

• Ifunique,hashdatabaseisupdated

• Softwarecompressionisappliedanddatastored

• DonotuseRMANencryptionorcompression

• UseFILESPERSET=1

• Wholedataisreadfromdisk

• Wholedataistransferredovernetwork(targetsidededupe)orDBresourcesareusedfordeduplicationjob(sourcesidededupe)

• Incrementalandarchivedlogsprovideverypoordeduplicationratios(mostlyuniquedata)

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Hashbaseddeduplication solutions

Howtheywork RMANimplications


Incrementalmergebasedsolutions • IncrementalLevel0imagecopybackuptakentoNFSshare

• IncrementalLevel1takentoanalternatelocation

• SnapshotofNFSsharecreatedtopreserveoriginalimagecopy

• Incrementals appliedtorollforwardimagecopytothesameSCNasincrementallevel1

• UsesDBserverresourcestoapplyincrementals toimagecopy

• Plus,storageoperationsinvolvedtorestoreoldersnapshotandcoordinatewithRMANrecovery

• Net-net:thisisanRMANfeature,notuniqueinstorageproducts

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RUN { RECOVER COPY OF DATABASE WITH TAG 'incr_update'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG 'incr_update' DATABASE; }


ZeroDataLossRecoveryAppliance

CreatedbyOracleDatabaseteamtoprotectyourOracledatabases

• Unique,deepdatabaseunderstanding

• RealIncrementalForever• DesignedforDBAandapplication

owners• Ensuresrapiddatabaserecoveryto

anypoint-in-time• Knowrecoverystatus- atalltimes• BackuponlychangedDBblocks• ReduceClientsLoadduringbackups

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ProgramAgenda

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RMANCloudModule



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Copyright©2017, Oracleand/oritsaffiliates.Allrightsreserved.|Copyright©2017, Oracleand/oritsaffiliates.Allrightsreserved.|

OracleDatabaseBackupCloudService

• Cloud Side• Cloud Object Storage

• Client Side• RMAN driven backup/recovery via SBT Module

• RMAN encryption* for backups is enforced (mandatory)

• RMAN compression* for optimal transfers (optional)

• Data is securely transmitted to the cloud over HTTPS

OracleDatabaseBackupCloudModule

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DatabaseBackup

OracleRMAN

OracleDatabaseCloudBackupModule

CustomerDataCenter

*RMANCompression&RMANEncryptionincludedwithsubscription


BackupService:ForyourOn-PremisesDatabaseBackups

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Simple4-StepProcess

CloudSubscription

• StorageCapacity• IdentityDomain• ServiceName• UserID/Password• Geo-Replication

1 2 3 4InstallRMANModule

• DownloadInstallerfromOTN

• RunInstallerontheDBServer

ConfigureRMAN

• “Tape”(SBT)Interface

• Encryption• Compression• Parallelism

PerformBackup&Recovery

• Schedulefull&Incrementalbackups

• Restore&Recoveryon-demand


Introducing:ArchiveStorageSupport

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ArchiveStorageisforlongtermretention,infrequentlyaccesseddata.

4hoursdelayinaccessingarchiveddata

ArchiveStorageislessexpensivethanObjectStorage

RMANbacksuptoanarchiveortiering container,filesaremovedtoArchiveStoragebasedonpolicy

RMANRESTOREPREVIEWcommandisusedtodetermineifbackuppiecesareavailableforrestoreormustberecalledfromArchiveStorage

OracleRMAN

OracleDatabaseCloudBackupModule

Databases/FRA

DatabaseBackup

ObjectStorage ArchiveStorage


CloudBackupBestPractices• Bandwidthrequirements

– StartwithyourRTOandRPOrequirementsandconsider:• FullDBbackupset size,dailychangerate,archivelog production,compressibilityofyourdata• Useabandwidthcalculator

• Compression– UseLOWorMEDIUMcompression,HIGHsavesmorespacebutitisveryCPUintensive.

• #Channels,sectionsize– Usingmultiplechannelsinparallelmayimproveyourbackupspeed– Startwith4channelsandtestincreasinguntilyoureachthecap– Adaptsectionsizeaccordingly(largestsingledatafile /(numberofchannels*2))

• Usedualbackupstrategies(tolocalandcloudtargets)toreduceRTO

• UseBulkDataTransferserviceforworkloadsliftandshift

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DualBackupStrategies:LocalImageCopy• Scenario

– Anumberofbusinesscriticalproductiondatabases– Wantstostorerecentbackupsonlocaldiskandolderbackupsinthecloudforlongtermretention

– Databaseserverisconnectedtotheinternet– ShorterRTOfornear-term,longerRTOforolderdata

– Retention• Localdisk:1month,Cloud:years

• Solution– DoRMANimagecopybackupstolocaldisk– Backupthoseimagecopiestothecloudusing

RMANfromthesameDBserver

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OracleDatabaseBackupCloud

Service

SSL

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LocalDiskBackup(ImageCopy)

On-PremisesDatabases

RMAN

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RMAN> BACKUP DEVICE TYPE sbt COPY OF DATABASE;


DualBackupStrategy

• RMANbackupbackupset commandcannotbeusedbecauseofdifferentSBTlibraries

• OntheWeekends

– RunthelocalweeklyL0

– RunthecloudL0

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BackingtoalocalSBTdestinationandcloudwithseparateFull/Incrementalpatterns.

set echo onrun {allocate channel c1 device type sbt parms "SBT_LIBRARY=<library>, ENV=(<envs>)";backup incremental level 0 tag LOCAL_TGT database format '%d_%U';}

set echo onrun {allocate channel c1 device type sbt parms "SBT_LIBRARY=<libopc>, ENV=(<envs>)";backup incremental level 0 tag CLOUD_TGT database format '%d_%U';}


DualBackupStrategy

• OntheWeekdays– Runthelocaldailyincremental

– Runthecloudincremental

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BackingtoalocalSBTdestinationandcloudwithseparateFull/Incrementalpatterns.

set echo onrun {allocate channel c1 device type sbt parms "SBT_LIBRARY=<library>, ENV=(<envs>)";backup incremental level 1 for recover of tag LOCAL_TGT database format '%d_%U';}

set echo onrun {allocate channel c1 device type sbt parms "SBT_LIBRARY=<libopc>, ENV=(<envs>)";backup incremental level 1 for recover of tag CLOUD_TGT database format '%d_%U';}


DualBakcup Strategy• OnWeekendsandWeekdays

– RuntheArchivedLogsbackupscript

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backup device type disk archivelog all tag ARCHIVE_DISK delete all input;

run {allocate channel c1 device type sbt parms "SBT_LIBRARY=<library>, ENV=(<envs>)";backup backupset from tag ARCHIVE_DISK force tag ARCHIVE_LOCAL format '%d_%U';}

run {allocate channel c1 device type sbt FORMAT '%d_%U' PARMS "SBT_LIBRARY=<libopc>, ENV=(<envs>)";backup backupset from tag ARCHIVE_DISK force tag ARCHIVE_CLOUD format '%d_%U';}

delete backup tag ARCHIVE_DISK;


LiftandShiftUsingBulkUpload

• UploadexistingDISKbackupstotheCloudStorage– EitherusingFTCLI,RESTAPIsortheStorageBulkTransferService

• StartaCloudDBinstanceconfiguredtoaccessthetargetcontainerandusetheRMANexportcommandto“export”thebackuppieces

• ExportcommandwillcreatethemetadataneededbyRMANtorestorethosepiecesfromobjectstorage

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Linuxx64only


ProgramAgenda

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RMANCloudModule



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Copyright©2017, Oracleand/oritsaffiliates.Allrightsreserved.| 23

OSB12.2newfeatures

• Servesas FileSystemBackupsoftwareandMediaManagerforRMAN– SupportsTapeandDiskPooldevices

• IntroducingsupportforOracleCloudStorageandArchive– NowsupportsOracleCloudStorageasabackuptarget– ObjectStorageandArchiveStorage– Allcloudbackupsencrypted,keysstoredlocally

• NewStagingDevices– Supportstagingtodisk,tapeorcloud– ScheduledRule-basedmigrationorduplication– Independentretentiontime

• PolicyBasedCompression

• Perhostorperjob,4levelsHIGH,MEDIUM,LOW,BASIC


ProgramAgenda

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RMANCloudModuleNewFeatures

RMANCloudModuleBestPractices



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Gagan SinghSr. Database Architect

Technology and Manufacturing Group (TMG)

Intel Corporation

§ INTEL Corporation – Introduction

§ Database Environment Summary

§ Legacy Backup Overview

§ Challenges

§ Recovery Manager – Use Cases

§ ZDLRA integration with RMAN

§ Recovery Manager with ZDLRA – Key advantages

Agenda

History of Intel

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• 1968: Intel is founded by Robert Noyce and Gordon Moore

• 1971: World’s first microprocessor

• Now: Innovation that expands the reach and promise of computing

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§ Leading Manufacturer of Computer, Networking Communications Products, Memory solutions, Security & Programmable solutions.

§ $59.38B in Annual Revenues § Over 100K Employees Globally

Intel Corporation

Database Environment Summary§ Automated manufacturing with complex integrated systems.§ Goals include -Yield analysis, process improvement, failure mode analysis and test

time reduction.§ Database sizes ranging from few GB’s to ~350 TB.§ Mix of Oracle Engineered systems and other vendors§ 24 x 7 uptime.§ Monitoring and Availability is key.§ Strict reporting SLA’s.

Legacy Backup Overview

a• Main strategies àIncrementally updated backups and backupsets

b• Image copies à Daily Incremental à Merge to L0 à Move to Tape

c• Weekly L0 backupset àDaily Incremental à Move to Tape

d• No centralized recovery catalog

e• No compression

f• Backup Validation

Challenges§ Allocate equal storage for backups on Tier 1 SAN§ Several operational issues managing backups

§ Validation taking longer and resource intensive§ Data movement to SBT added another layer of complexity for VLDBs

§ Resource impact§ Prolonged Server resource utilization§ I/O impacts on Tier 1 SAN when writing backups to disks

§ Restores involved multiple steps and archive log management.§ Inconsistent scripts/backup types§ Multi vendor footprint – Challenges during troubleshooting.

Recovery Manager – Use Cases§ Leverage Block Change Tracking –> speeds up incremental backups § Validation: restore database validate, restore database preview§ Data Recovery Advisor -> checks recovery health and proactively flags issues§ Duplicate Database : Active Duplicate enhanced in 12c to use backup sets -> much

more network efficient than 11g§ Create standby DB with duplicate, and Migrate Database Cross-Platform

§ For VLDBs, Convert Older partitions to ‘Read ONLY’ -> reduces overall backup volume, as these tablespaces are only backed up once

§ Uniform secure configuration: Store RMAN scripts in catalog§ Transparent to Data Guard role changes.

§ Time and resource saving through ‘restore …… from service’ feature in 12c§ Use of Multi Section in 12c à Supported with Incremental backups and image copies.

ZDLRA integration with RMAN§ ZDLRA: Leverage different protection policies à”Recovery Window” is important § ZDLRA: Backups : FILESPERSET 1 for data files, as ZDLRA uses this value on

restores. MAXPIECESIZE not supported.§ ZDLRA: EM integration reduces operational overhead§ ZDLRA: Do not make any changes to Recovery Appliance§ ZDLRA: System Activity Script (Doc ID 2275176.1)§ Backup Strategy with ZDLRA :

One time Level 0 (backup set)

Enable Redo Shipping (optional) Daily Incremental

Recovery Manager with ZDLRA – Key advantages§ Reduce resource load on target (protected) DBs. § Storage saving through compression on ZDLRA layer.§ Uniform Backup Environment: Single backup strategy.§ Flexible Backup Retention: Protection Policies, Recovery Windows.§ Reduce operational overhead: Reporting and Monitoring through Enterprise Manager § Reliability, Availability & Performance: Hosted on Exadata HW§ Backup - Better RPO and RTO : Updated Level 0 restores§ Reduce vendor footprint.


WhereToGoNext?• ZeroDataLossRecoveryAppliance:TheWorld'sBestDatabaseProtection

– TimChien,Todayat4:30pm,Moscone West3006

• ZeroDataLossRecoveryAppliance:DeepDiveandBestPracticesfromDevelopmentKellySmith/JonySafi,Wednesdayat1:00pm,Moscone West3006

• MaximumAvailabilityArchitectureBestPracticesandTechniquesforOracleCloud– SridharRanganathan,Wednesdayat11:00am,Moscone West3006

• MaximumAvailabilityArchitectureBestPractices:OracleDatabase18c– MikeSmith,Tuesdayat5:45pm,Moscone West3006

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Stay Informed After OpenWorld

Twitter: @OracleZDLRA

LinkedIn: Oracle IT Infrastructure group


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Note:ThespeakernotesforthisslideincludeinstructionsforwhentouseSafeHarborStatementslides.

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