oracle backup recovery plan

8/20/2019 Oracle Backup Recovery Plan

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Oracle Database Backup-and-Recovery

Best Practices and New FeaturesTimothy ChienPrincipal Product Manager

Database High Availability

Husnu SensoyVLDB !pert

Tur"cell Communication Services


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%&at 'eeps (ou "wake at Ni#&t)Data Protection *oncerns+

• Meeting recovery SLAs(

• +educing e!posure to data loss(

•

Meeting bac"up &indo&s(• Dealing &ith long0term bac"up storage(

• Management comple!ity(

• Budget(

…Where do I begin?


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"ssess Recovery Reuire.entsFirst /tep in Data Protection Plannin#

• -denti1y critical data 1rom rest• Design recovery re2uirements around data criticality

– Assess tolerance 1or data loss 0 Recovery Point Objective (RPO3• Ho& 1re2uently should bac"ups be ta"en(

• Point0in0time recovery re2uired(

– Assess tolerance 1or do&ntime 0 Recovery Time Objective (RTO)• Do&ntime. Problem identi1ication 4 recovery planning 4 systems recovery

• Tiered +T) per level o1 granularity5 e6g6 database5 tablespace5 table5 ro&

– Determine bac"up retention policy• )nsite5 o11site5 long0term

• Assess data protection re2uirements– Physical. Disasters5 outages5 1ailures5 corruptions

– Logical. Human errors5 application errors


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/tora#e

"ctive Data uard,ully Active,ailover +eplica

Recovery 2ana#er R2"N4 5

Oracle /ecure Backup O/B4Lo& Cost5 High Per1ormance Bac"up

* +ecovery

Flas&back 6ec&nolo#iesCorrect rrors by

Moving Bac" in Time

Database

Database

/tora#e

Production Site Standby Site

Oracle 2a7i.u. "vailability "rc&itectureRobust 5 Inte#rated Data Protection

Data Recovery

"dvisor -ntelligent5 7uided +ecovery Analysis


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Backup 5 Recovery Recovery 6i.e Ob9ective R6O4

Physical Data Protection

• +ecovery Manager 8+MA'3

• )racle Secure Bac"up 8)SB3

Hours9Days

Logical Data Protection

• ,lashbac" Technologies

Minutes9Hours

+ecovery Analysis• Data +ecovery Advisor

Minimi:es time 1or problem identi1ication *recovery planning

Oracle Data Protection /olutions

Disaster Recovery Recovery 6i.e Ob9ective R6O4Physical Data Protection• Active Data 7uard

Seconds9Minutes


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Oracle Backup 5 Recovery /olutions;Backup and Recovery on /teroids

File /yste. DataFile /yste. Data

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Recovery2ana#er

R2"N4

Oracle DatabasesOracle Databases

P&ysical Data Protection

Data Recovery "dvisor

?o#ical DataProtection

Recovery "nalysis

Flas&back 6ec&nolo#ies


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Backup 5 Recovery Foundation*o.plete Oracle /olution ro. Disk to 6ape


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• )racle bac"up and recovery 1or your entire -T environment

• Multiple media options available to meet the most stringent SLAs

– Local dis"5 remote Cloud storage5 physical and virtual tape

Oracle Recovery2ana#er R2"N4 Fast Recovery "rea

6ape Backup

".aCon /3*loud /tora#e

Oracle /ecure BackupO/B4

Oracle /ecure Backup

O/B4 *loud 2odule


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Oracle Recovery 2ana#er R2"N4Oracle-inte#rated Backup 5 Recovery n#ine

Oracle nterprise2ana#er

R2"N

Database

Fast Recovery"rea

6ape Drive

Oracle /ecureBackup

< -ntrinsic "no&ledge o1 database 1ile1ormats and recovery procedures

< Bloc" validation

< )nline bloc"0level recovery

< Tablespace9data 1ile recovery

< )nline5 multi0streamed bac"up

< =nused bloc" compression< 'ative encryption

< -ntegrated dis"5 tape * cloud

bac"up leveraging the ,ast+ecovery Area and )racle SecureBac"up*loud


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Oracle Fast Recovery "rea"uto.atic Disk-to-Disk DED4 Backup 5 Recovery

• ,ast +ecovery Area ; -ntegratedD>D bac"up and recovery

– ,avorable dis" economics ; lo&0costdis"s used 1or recovery area

– )racle ma"es it even better &ithinstantaneous restore.

• switch datafile 4 to copy;

• recover datafile 4;

• ,ast incremental bac"ups– Bac"s up only changed bloc"s

– Changed bloc"s are trac"ed using avery e11icient algorithm5 e6g6 >?! 1aster

• 'ightly incremental bac"up rolls

1or&ard recovery area bac"up– 'o need to do 1ull bac"ups

• recover copy of database

with tag ‘ORCL’;

,ast +ecovery Area

'ightly ApplyValidated-ncremental

#ee"ly ArchiveTo Tape

Database Area

Integrated backup-storage tiering


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R2"N New FeaturesOracle Database 11g Release E

•

Automatic Bloc" +epair – Allo&s corrupt bloc"s on the primary database to be automatically

repaired 1rom physical standby database5 as they are detected6

– -n0line and transparent6 =ser sees brie1 &ait 1rom 2uery on corruptbloc" &hile it is being repaired6

– Can also be per1ormed on0demand via RECOVER command– +e2uires Active Data 7uard 8real0time 2uery on physical standby

database36

"ctive Data uard/tandby

Pri.arydatabase

ueries

"uto.atic BlockRepair


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• Bac"up compression. popular &ay to save onstorage costs

• Multiple +MA' bac"up compression levels–

Choose compression levels * bac"up throughput• [BASC! " #$# " %&'(% " LO)

• HIGH ; reduces bac"up si:e by @?4 depending on data type

• LOW ; least impact on bac"up throughput

• MEDIUM ; best balance bet&een compression and throughput

• HIGH | MEDIUM | LOW re2uire Advanced Compression)ption



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R2"N*lient

DiskG6ape Backup

/ource Database

Restore

Processes

*lone Database

/? Net

*onnections

FirewallRestriction

•

-n previous releases5 DUPLICATE re2uired +MA' client connectionsto source and clone databases6

• #ith enhanced DUPLICATE5 connection to source database notneeded 1or environments &here net&or" connection is not available6



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"dditional R2"N New Features

Feature Beneit

Backup Fast Recovery"rea to disk location

• Protect ,ast +ecovery Area &ith on0dis" bac"up o1 its+MA' bac"ups5 archived logs5 and control1iles6

7tended tablespacepoint-in-ti.e recovery6/PI6R4 capabilities

• +ecover a dropped tablespace6

• Per1orm multiple tablespace point0in0time recoveries5

&ithout re2uiring recovery catalogResu.able'(*LCA+&

• DUPLICATE can resume processing 1rom most points o1

1ailure5 reducing overall time6

CO,-&R+ 'A+ABAS&

can skip unneeded

datailes

• +educes overall conversion time by only processing there2uired ='D)0containing data 1iles6

S&+ ,&),A%& .OR

+ABL&S*AC& "

'A+ABAS&

• Simpli1ies renaming o1 data1iles 1or RESTORE5DUPLICATE5 and TSPITR operations6


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R2"N Best Practices

• ,ast +ecovery Area 8,+A3 guidelines

–

Place ,+A on separate storage * store bac"ups5 in addition to copy o1control 1ile5 redo logs5 and archived logs5 to protect all needed recovery0related 1iles 1rom production outages6

– #hen estimating ,+A si:e5 i1 you &ant to "eep.

• Control 1ile bac"ups and archived logs

– stimate archived logs generated bet&een successive bac"ups on the

busiest days and multiply total si:e by > to account 1or activity spi"es6

• Archived logs and ,lashbac" logs

– Multiply the archived log si:e bet&een bac"ups by @5 assuming ,lashbac"retention time bet&een archived log bac"ups6

• -ncremental bac"ups

–

Add in their estimated si:es• )n0dis" image copy bac"up

– Add in si:e o1 the database minus the si:e o1 temp 1iles


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R2"N Peror.ance FactorsBalancin# Backup and Restore Reuire.ents

*onsideration Peror.ance ectIncre.ental Backup/trate#y

2ultiple7in#

ardwareGNetworkG/tora#e


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EA

Data %are&ouse B5R Best Practices

•

!ploit partitioning and read0only tablespaces– )lder partitions can be moved to read0only tablespaces

– Bac"up read0only tablespaces once5 then periodically5 dependingon tape retention policy

• Divide 1ull bac"up &or"load across multiple days

• Leverage database * bac"up compression• Save time &ith tablespace level bac"ups

– Bac"up inde! tablespaces less 1re2uently than data tablespaces

– Bac"up scarcely used tablespaces less 1re2uently

–

+educe restore time 1or most critical tablespaces5 by grouping themtogether in separate bac"ups

• Ta"e incremental bac"up &hen ')L)77-'7 operations1inish to ensure recoverability


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•

+MA' Step0by0Step Per1ormance Tuning 8'#3– http.99&&&6oracle6com9technology9deploy9availability9pd19rmanGtuningGmmG

bp6pd1

• Very Large Database Bac"up * +ecovery Best Practices– http.99&&&6oracle6com9technology9deploy9availability9pd19vldbGbr6pd1

• Best Practices using +ecovery Manager &ith )racle Data7uard and )racle Streams– http.99&&&6oracle6com9technology9deploy9availability9pd19oracle0open&orld0

>??9>IJJ>6pd1

"dditional Resources


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Oracle /ecure Backup O/B4

nterprise 6ape Backup 2ana#e.ent

Oracle nterprise2ana#er

Oracle DatabaseOracle Database

R2"N Inte#ration

Oracle /ecure Backup

6ape?ibrary

Hirtual6ape

?ibrary

H6?4

Protects ntire I6nviron.ent


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Ama:on S

• )racle Secure Bac"up Cloud module. Bac"up databases to Ama:on Cloud

– Complements local dis" and9or tape bac"up

–

liminates -T management overhead o1 a disaster recovery site– Bac"ed by Ama:on S uptime SLAs

• N5O?? per +MA' channel

• More in1ormation. http.99&&&6oracle6com9technology9tech9cloud9inde!6html

)racle SecureBac"up Cloud

Module

Database ,iles 9,ast +ecovery Area

R2"N

"ompression #$ncryption

Oracle /ecure Backup *loud 2oduleOsite Database Backups in t&e *loud


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?o#ical Data ProtectionFast ‘Rewind’ o !ogical "rrors


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Recovery "nalysis



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Flas&back 6ec&nolo#iesrror Detection 5 *orrection

• ,lashbac" revolutioni:es error recovery– Vie& good data as o1 a past point0in0time

– Simply re&ind data changes

– Time to correct error e2uals time to ma"e error

#orrection $ime % "rror $ime & '()*SI+",

< Lo& impact

< !cellent tool 1or con1iguring /A5 Dev and Training databases

< ,lashbac" is easy ; simple commands5 no comple! procedure

A

EA

$A

0A

:A

+ e c o v e r y T i m e

6raditionalRecovery

Flas&back


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rror Investi#ation wit& Flas&back

• Flas&back uery

–

/uery all data at point in time

T! K

T! >

T!

select * from Salary AS OF ‘12:00 P.M.’

select * from Salary VES!O"S #E$%EE ‘12:00 PM’ a&' ‘2:00 PM’ where …

select * from F(AS)#A+,$A"SA$!O",-E where ' )E3$OA%4‘0002000500000026’

Flas&back 6ransaction uery ;

See all changes made by a transaction

Flas&back Hersion uery ; See all versions o1 a ro& bet&een times

; See transactions that changed the ro&


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• Flas&back Database ; restoredatabase to any point in time

• Flas&back 6able ; restore contentso1 tables to any point in time 8undo0

based3• Flas&back Drop ; restore

accidentally dropped tables 8basedon 1ree space in tablespace3

• Flas&back 6ransaction ; bac" outtransaction and all subse2uentcon1licting transactions 8redo0based3

Order

Database

*usto.er

rror *orrection wit& Flas&back


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•

,ast point0in0time recovery strategy• liminate the need to restore a &hole

database bac"up

• Continuous data protection 1or database

–

)ptimi:ed5 be1ore0change bloc" logging– +estores ust changed bloc"s

– +eplay log to restore DB to desired time

• -ts 1ast 0 recover in minutes5 not hours

• -ts easy 0 single command restore

,lashbac" Database to >.?O PM

;Rewind button or t&e DatabaseData Files Flas&back?o#

'e& Bloc"Version

Dis" #rite

)ld Bloc"Version

Flas&back Database*ontinuous Data Protection *DP4


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Best Practices =ndo-based Flas&backFlas&back ueryK Flas&back 6able

•

=se =ndo Advisor 8available through nterpriseManager3 to get recommendations on available undoretention 1or various si:es6

• =se 1i!ed si:e undo–

=ndo retention automatically tuned 1or best possible retentionbased on tablespace si:e and current system load6

• Be a&are o1 DDL restrictions ; not possible to 2uery inthe past i1 table structure is modi1ied 8e6g6 drop9modi1ycolumn5 move table5 etc63

• ,urther details.http.99do&nload6oracle6com9docs9cd9BKI?RG?K9appdev6K?>9bK@>OK9ad1nsG 1lashbac"6htmEsthre1K@IR


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• Tune ,+A storage– =se ASM5 con1igure enough dis" spindles5 etc6

• =se physical standby database to test ,lashbac" logging

• =se VFLASH*AC$DATA*ASE$LOG to si:e log space5 a1terrunning&or"load F duration o1 ,lashbac" retention period6

• Create 7uaranteed +estore Point 87+P3 &ithout enabling,lashbac" logging– Saves dis" space 1or &or"loads &here same bloc"s are repeatedly

updated

– Drop 7+P to immediately reclaim space

• ,urther details. Metalin" 'ote565535.1 Flashback Database Best Practices & Performance

Best Practices Flas&back Database


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Recovery "nalysisIntelli#entK uided Recovery


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Recovery "nalysis



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6i.e to Repair

Data Recovery "dvisor $he -oti.ation

• )racle provides robust tools 1or datarepair.+MA' ; physical media loss or corruptions

,lashbac" ; logical errors

Data 7uard ; physical problems

• Ho&ever5 problem diagnosis andchoosing the right solution can be errorprone and time consuming

– rrors more li"ely during emergencies

Recovery

Investi#ation5 Plannin#


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Data Recovery "dvisor DR"4

• )racle Database tool that automatically diagnoses data 1ailures5presents repair options5 and e!ecutes repairs at the users re2uest

• Determines 1ailures based on symptoms– 6g6 an open 1ailedU because data1iles 1?@O6db1 and 1??6db1 are missing

– ,ailure -n1ormation recorded in diagnostic Automatic Diagnostic +epository8AD+3

– ,lags problems be1ore user discovers them5 via automated health

monitoring• -ntelligently determines recovery strategies

– Aggregates 1ailures 1or e11icient recovery

– Presents only 1easible recovery options

– -ndicates any data loss 1or each option

•

Can automatically per1orm selected recovery steps• Accessed via +MA' or M

Reduces downtime by eliminating conusion


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Data Recovery "dvisor %iCard


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Data Recovery "dvisor 2anual Repair


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Data Recovery "dvisor Recovery "dvice


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Data Recovery "dvisor /u..ary


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$$

Puttin# It "ll 6o#et&erLL*usto.er 7a.ple

Reuire.ent /ervice ?evel "#ree.entRPO

R6O

•6ier 3

•6ier E

•6ier 1

Disaster Recovery

Retention Policy

BackupRedundancy

Oracle /olution "rc&ived ?o# 2ode

R2"NK O/BK DR"

Flas&back 6able

Flas&back Database

Data uard

Data uard

O/B

Fast Recovery "reaK O/B

O/B

Any point in time &ithin recovery &indo&

• K hour 1or tablespace9data1ile recovery

hours 1or 1ull database recovery

• ? min 1or ro&9table recovery

8&ithin last hrs3 K hour 1or database recovery 1rom logicalerrors 8&ithin last > hrs3

• KO min 1or any database outage

,ailover to standby database at secondary site

Bac"ups sent o11site

)nsite bac"ups 0 days)11site bac"ups 0 K year

T&o bac"up copies on tape


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Recovery /?"s*usto.er 7a.ple

•

)racle Solution 0 +MA' 4 )SB 4 Data 7uard 4 D+A– )ne0time image copy bac"up to ,ast +ecovery Area 8,+A3

– Daily di11erential incremental bac"up to ,+A

– -mage copy rolled 1or&ard daily until sysdate ; @U

– ,+A si:ed 1or one image copy bac"up 4 @ incrementals 4 @ days o1

archived logs– Daily bac"up o1 ,+A to tape via )SB 8retained 1or K month3

– Daily vaulting o1 tape bac"ups to o11site location 8retained 1or K year3

– +eal0time5 synchroni:ed physical standby database in Ma!imumPer1ormance mode 1or disaster recovery

–

Leverage D+A 1or real0time detection and analysis o1 1ailures


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Recovery /?"s*usto.er 7a.ple

•

)racle Solution ; ,lashbac" Technologies– Si:e ='D) tablespace 1or hour retention period

– Set ,lashbac" Database target retention time to > hours

– Provision ,lashbac" log space in ,+A5 based on > hour &or"load


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Re.e.ber)Data Protection *oncerns+

• Meeting recovery SLAs(

• +educing e!posure to data loss(

• Meeting bac"up &indo&s(

• Dealing &ith long0term bac"up storage(

• Management comple!ity(

• Budget(

Solution…

Oracle Backup 5 Recovery /olutions


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Recovery "nalysis

(ata Reco.ery /d.isor

?o#ical Data Protection

Flashbac0 $echnologies

P&ysical DataProtection

Reco.ery -anager 1racle Secure )ac0up

Oracle Backup 5 Recovery /olutions*o.plete 5 6ar#eted Recovery


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,A

O6N Resources• +ecovery Manager.

http.99&&&6oracle6com9technology9deploy9availability9htdocs9+MA'G)vervie&6htm

• )racle Secure Bac"uphttp.99&&&6oracle6com9technology9products9secure0bac"up9inde!6html

• ,lashbac" Technologies

http.99&&&6oracle6com9technology9deploy9availability9htdocs9,lashbac"G)vervie&6htm

•

)racle Cloud Computing Center http.99&&&6oracle6com9technology9tech9cloud9inde!6html

• )racle Ma!imum Availability Architecturehttp.99&&&6oracle6com9technology9deploy9availability9htdocs9maa6htm

" /essions ?abs 5 De.os by Oracle Develop.ent


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" /essionsK ?absK 5 De.os by Oracle Develop.ent

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2ondayK 1E October 2arriott otel olden ate B1

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1MAAp )racle Data 7uard. #hats 'e& in KK6>5 +oom 1A$

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