Oracle RAC 10g: Running Mixed Workloads Gordon Smith Director, RAC Product Management Oracle Corporation Session id:

Oracle RAC 10g: Running Mixed WorkloadsGordon Smith Director, RAC Product ManagementOracle CorporationSession id:

AgendaBusiness GoalsTodays Inadequate SolutionsKey Technical Elements of the SolutionNon-Blocking QueriesReal Application ClustersOther Great ToolsOracle 10g Enterprise Grids Putting It All Together

Business GoalsGoalsReport off current live dataNo impact on online performanceSimplicity Low costFocusing on reporting Not full blown Data WarehouseDW a much more complex problemOracle offers good On Time solution

Todays Inadequate SolutionsWait until off-hours when online systems arent being usedProblemsThe Internet and 21st Century business changed online to 24 X 7Data not currentOff-Hours Batch

Todays Inadequate SolutionsCopy database to second system for reportingProblemsNot current dataComplicated, multi-step process with many failure pointsPoor hardware utilization Data is growing and getting harder to copyCloning (or re-silvering) can impact performanceReporting DB Clones

Todays Inadequate SolutionsWhy not just run reports against the data on my disaster recovery (DR) standby systemThe standby is just sitting there underutilizedData can be very currentProblemsNearly all DR solutions dont let you access data on standby system, e.g., Remote disk mirroring systemsOracle DataGuard (physical mode)

Traditional DR Solutions

Key Technical Elements of the SolutionNon-Blocking QueriesReal Application ClustersOther Great ToolsAutomatic Undo ManagementResource ManagerLogical Data Guard

Non-Blocking QueriesProvides consistent readsNever sees uncommitted dirty dataNever sees some changes from a transaction but not other changesBottom line: You Get The Right AnswerDoesnt block updatesDoesnt get blocked by updates

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesFor example, say you need to add up the balances for all accounts

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesFor example, say you need to add up the balances for all accounts

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesFor example, say you need to add up the balance for all accounts

1,000

Non-Blocking QueriesNow lets run a transaction at the same time that transfers $50 from one account to anotherWithout using Non-Blocking QueriesWithout using read locks

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets run a transaction at the same time that transfers $50 from one account to anotherWithout using Non-Blocking QueriesWithout using read locks

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets run a transaction at the same time that transfers $50 from one account to anotherWithout using Non-Blocking QueriesWithout using read locks

-$50+$50

AccountBalance000110000021000003500004100000510000061000007100000810000091500010100

Non-Blocking QueriesNow lets run a transaction at the same time that transfers $50 from one account to anotherWithout using Non-Blocking QueriesWithout using read locks

1,100

Non-Blocking QueriesNow lets try read locks

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets try read locks

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets try read locks

-$50Transaction Blocked!!!

AccountBalance000110000021000003500004100000510000061000007100000810000091500010100

Non-Blocking QueriesNow lets try read locksYou get the right answer but update transactions are blockedSimilarly update transactions can block queries

1,000

Non-Blocking QueriesNow lets try non-blocking queries with read consistency

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets try non-blocking queries with read consistency

AccountBalance0001100000210000031000004100000510000061000007100000810000091000010100

Non-Blocking QueriesNow lets try non-blocking queries with read consistency

-$50+$50

AccountBalance000110000021000003500004100000510000061000007100000810000091500010100

Non-Blocking QueriesNow lets try non-blocking queries with read consistencyQueries dont block updatesUpdates dont block queries

1,000

Real Application Clusters Runs all types of business applications on clustersMaximum availabilityMaximum scalabilityLowest costEfficient cache fusion technology

Oracle9i RAC SAP Scalability# UsersRunning on HPQ AlphaServer ComputersSD 3-Tier Parallel Benchmark Results Now Official82%ScalabilityCertified

Oracle9i RAC OLAP Scalability 75x better than the nearest competitor Cant Say1,13585,719Analytic Queries Per Minute (AQM)World Record Performance Source: DSS Lab, 2003

Sheet:

Oracle

Hyperion

Microsoft

North

RAC Workloads Survey

Chart1

40

35

20

5

RAC Customer Workloads

Sheet1

OLTP40

Mixed35

DW20

Unknow5

Sheet1

RAC Customer Workloads

Sheet2

Sheet3

RAC Mixed Workload CustomersChina Unicom ChongingSupply SolutionsGas Authority of India Ltd.Texas Tech UniversityLithonia LightingSoftChoiceTata TeleservicesAusRegistryPOSCO Six SigmaDongbu InsuranceAshok Leyland Ltd.WeightWatchers.com

CJISFannieMaeJob PartnersTelenor MobileUniversity of MelbourneHealthPartnersCairns City CouncilGuangfu SecuritiesMerrill LynchSTP MaisoningVanderbilt UniversityEPLGas Authority of India Ltd.KITCNextelClearing Corp of IndiaDaegu universwityHite BreweryUS Army Medical Research & Material CommandGreen Mountain PowerHolmesglen TAFESmartservBharti Televentures Ltd.

Mix Workload Customer Example

Telenor Mobile in Norway 2-nodes, 16 CPU & 4 CPU HP-UX OLTP - 4 CPUs nodeDSS on 16 CPUsFail OLTP to DSS but not other way

Other Great ToolsResource ManagerControls allocation of CPU to workloadsLimit execution times of long running operationsLimits # of active sessions per workloadLogical Data GuardAllows queries to data on DR StandbyAllows updates to data only on StandbyAutomatic Undo ManagementNow fully automatic in Oracle9i

Enterprise Grid Putting It All TogetherLow Cost ComputingYou can just throw CPUs at itAutomatic Storage ManagementYou can just throw disks at itWorkload ManagementPowerful new ways to manage different workloads easily

Enterprise Grid - Low Cost Computing

Electronic Arts ROI1st YearBig SMP is 35%+ More Expensive

5 YearsBig SMP is 46%+ More ExpensiveTotal IT costs:Hardware costsSoftware costsH&S maintenanceDBA costsSysAdmin costs

Enterprise Grid - Automatic Storage ManagementEliminates the complexity and cost of 3rd party volume and file managersCompletely automates I/O tuningEliminates all fragmentationOptional mirroring

Automatic StorageManagement

Enterprise Grid - Automatic Storage ManagementEliminates the complexity and cost of 3rd party volume and file managersCompletely automates I/O tuningEliminates all fragmentationOptional mirroringAllows disks to be added or removed dynamically with fully automatic rebalancing

Automatic StorageManagement

Enterprise Grid - Automatic Storage ManagementEliminates the complexity and cost of 3rd party volume and file managersCompletely automates I/O tuningEliminates all fragmentationOptional mirroringAllows disks to be added or removed dynamically with fully automatic rebalancing

Automatic StorageManagement

Enterprise Grid - Workload ManagementHands-free assignment of servers to workloads based on rulesAutomatic assignment of servers to workloads at startupRe-assignment of servers to workloads as business needs changeOn server failure, automatic re-assignment of surviving servers to workloadsWorks across all platforms

Enterprise Grid Workload ManagementNormal Server AllocationReportingOrder EntrySpare

Enterprise Grid Workload ManagementChristmas SeasonReportingOrder Entry

Enterprise Grid Workload ManagementPost ChristmasReportingOrder Entry

Enterprise Grid Workload ManagementNormal Server AllocationReportingOrder EntrySpare

Enterprise Grid Workload ManagementNode FailureReportingOrder EntrySpare

Enterprise Grid Workload ManagementRecoveryReportingOrder Entry

Enterprise Grid Workload ManagementAnother Node FailureReportingOrder Entry

Enterprise Grid Workload ManagementRecoveryReportingOrder Entry

ConclusionA History of InnovationNon-BlockingQueriesOPSRealApplicationClusters(RAC)AutomaticStorageManagementWorkloadManagmentLow-CostCommodityClustersResourceManagerDataGuardEnterpriseGrids

Next Steps.Recommended Oracle RAC sessionsOracle RAC 10g: Continuous Services for the GridWednesday 11 am, Room 104Oracle RAC: Best Practices on LinuxWednesday 1 pm, Room 104Oracle RAC: Customer RoundtableWednesday 4:30 pm, Room 104Real Application Cluster Guru ChatThursday 12 noon, Guru LoungeSee RAC demos in Database DEMOgrounds Visit the RAC web sites for more informationhttp://otn.oracle.com/products/database/clustering/content.html

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