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Maximize Availability with Oracle Database 11g Release 2

Traditional High AvailabilityExpensive, idle redundancy

Idle Failover Server

Veritas Volume Manager

BMCSQL Backtrack

Idle DisasterRecovery

ProductionServer

Solaris ClusterHP ServiceGuard

IBM HACMP

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Automatic Storage Management

Real Application Clusters

Secure Backups to Cloud and Tape

Oracle Maximum Availability Architecture

ActiveData Guard

FastRecovery Area

Data Guard

Real Application ClustersVirtualizes server resources

• Runs all Oracle database applications

• Highly available and scalable

• Adapts to changes in workloads

HR SALES ERP

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Oracle Database 11g Release 2Dynamic Cluster Partitioning via Server Pools

• Server Pools

– Dynamically assigns the server resources required to run specific workloads

• Both Application and Database Pools

• Policy Managed

– Min and Max Servers

– Relative Importance

• Unassigned Servers go to Free Pool

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Oracle Database 11g Release 2Dynamic Cluster Reconfiguration for High Availability

• If a server pool falls below its minimum the cluster reconfigures

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Oracle Database 11g Release 2Dynamic Cluster Reconfiguration for High Availability

• If a server pool falls below its minimum the cluster reconfigures

• Moves a server from

– A server pool that is less important

– A server from pool with the same importance with more servers than its min

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Oracle Database 11g Release 2Simplified Provisioning

• New intelligent installer

– 40% fewer steps to install RAC

• Nodes can be easily repurposed

– Network and storage information read from profile and configured automatically

– No need to manually prepare a node.

– Nodes can be dynamically added or removed from the cluster

• SCAN - Single cluster-wide alias for database connections

– Clients need not be aware of cluster configuration changes

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Oracle Database 11g Release 2Better Virtualization for Databases

• RAC One extends benefits of server virtualization to single-instance databases on physical hardware– Consolidation

– Live Migration

– Rolling Patches

– Server failover

– Standardized DB environment

• Online upgradeable to full RACRAC One

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Oracle Database 11g Release 2Resources protected with Oracle Clusterware

• New agents for IMDB Cache, Hyperion, Siebel

• Resource Dependencies can be specified– Hard / Weak/Attraction / PullUp /

Dispersion

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“We’ve been able to save over $5 million dollars a year by re-platforming from our mainframe to Oracle Real Application Clusters.”

Eugene ParkSenior Director of Platform ServicesPG&E

Automatic Storage ManagementLowers the cost of storage management

• Virtualize and share storage resources

• Advanced data striping for maximum I/O performance

• Online addition and migration of storage

HR SALES ERP

© 2009 Oracle Corporation – Proprietary and Confidential

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Oracle Database 11g Release 2ASM Supports All File Types

• ASM now supports all types of files

– Database files

– Shared Clusterware files (OCR/Vote Disk)

– File system files

– ASM Cluster File System (ACFS)

– 3rd-party file systems

© 2009 Oracle Corporation – Proprietary and Confidential

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Oracle Database 11g Release 2ASM Cluster File System (ACFS)

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• General purpose clustered or local file system

• Data stored in ASM

• Inherits all ASM manageability benefits

– Optimized disk layout

– Online disk add/drop/rebalance

– Integrated mirroring

• Read-Only Snapshots– up to 64 point-in-time space

efficient copies of file system

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Oracle Database 11g Release 2Other ASM Enhancements

• Improved Management

– ASM Install & Configuration Assistant (ASMCA)

– Full Featured ASMCMD

– ASM File Access Control

– ASM Disk Group Rename

– Datafile to Disk Mapping

• Tunable Performance

– Intelligent Data Placement

Infrequently Accessed

Data

Frequently Accessed

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Oracle Data Guard 11g Release 2Data Protection and Availability

• Best protection for Oracle Database

• Automatic database failover

• Full systems utilization

Active Standby

Database

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“Active Data Guard will enable us to reduce system costs by up to $100,000 on our larger

mission-critical systems”

“It’s simpler to use than disk mirroring or replication and it guarantees that service level

agreements for reporting accuracy are met.”

Aris PrassinosDistinguished Member of

Technical Staff, MorphoTrak

Oracle Database 11g Release 2Data Guard Enhancements

• Active Data Guard - Quality of Service

– Standby Query SLA configurable from zero to “n” seconds

– Set maximum allowable data delay at standby database

– Database returns error to application if maximum is exceeded

– Application can redirect query to primary database

– Automatic block repair

– Bad blocks detected and fixed using good version from standby

• Data Guard - network utilization

– Transport compression for bandwidth constrained WANs

– Not just to resolve gaps after propagation interruptions

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Additional AvailabilityIMDB Cache Integration

Real Application Clusters Active Data Guard

Data Guard

• Support Data Guard synchronous physical standby

• Failover and switchover

• Transient rolling upgrade

• Zero down time

• No data loss

Application Transactions

Hot Standby for reads

In-MemoryCache Tables

Active Standby

In-MemoryCache Tables

Cache Write-through

Cache Refresh

Additional AvailabilityIMDB Cache Integration

• After switchover or failover to standby Data Guard

– Zero down time

– No data loss

Real Application Clusters Active Data Guard

Application Transactions

Hot Standby for reads

In-MemoryCache Tables

Active Standby

In-MemoryCache Tables

Cache Write-through

Cache Refresh

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• High performance typical of basic uni-directional Streams replication environment now extended to complex configurations

– Faster transformations - especially useful for application integration– Statement DML Handlers - up to 4x faster than procedural DML

handlers

– New Declarative Transformation - Keep Columns

– Optimized one-to-many propagations - up to 2x faster

– N-way and hub-and-spoke configurations

• Improved JMS integration and performance improvements for Streams Advanced Queuing - AQ dequeue is 30%-100% faster than previous releases

Oracle Database 11g Release 2Streams Enhancements - Performance

• 3rd party apps require fast real-time access to changes in Oracle database, to support heterogeneous data integration environments

• Solution: Extended Streams - XStream (API to Oracle Streams)

– Client application attaches directly to Streams apply process

– Direct access to Streams processes using OCI / Java

– Outbound server (XStream Out)

– Stream changes out of the Oracle database to client application

– Inbound server (Xstream In)

– Stream changes from external sources into an Oracle database

Oracle Database 11g Release 2Streams Enhancements - XStreams

XStream

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Oracle Database 11g Release 2Backup & Recovery Enhancements

• New RMAN backup compression capabilities– HIGH – reduces backup size by 40%+ depending on data type– LOW – least impact on backup throughput

– MEDIUM – best balance between compression & throughput

• Tablespace Point-in-time Recovery

– Can recover dropped tablespaces

– Can perform multiple recoveries of the same tablespace

• Oracle Secure Backup Cloud Module

– Transparent integration between RMAN and cloud-based storage

– Initial support for Amazon Simple Storage Service (S3)

“High availability is absolutely essential for us…we now use Oracle RAC for instance failover, data guard for site failover, ASM to manage our storage, and Oracle clusterware to hang the whole thing together.”

Jon Waldron Executive Architect Commonwealth Bank of Australia

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Oracle Database 11g Release 2Eliminate unused redundancy

• Additional storage used for mirroring provides additional bandwidth for processing with ASM

• Storage used for Fast Recovery Area instead of snapshots significantly improves both recovery and backup times

• Hardware typically utilized for failover can be used with Real Application Clusters – scalability improves

• Expensive mirrored disk environments do not need to be used for disaster recovery

• DR site available for rolling upgrades, backup and reporting – improves production performance, removes barrier to using standby

Oracle Maximum Availability ArchitectureEliminate the cost of planned downtime

Add/RemoveStorage

Redefine andReorganize

Tables

OnlineProduction Testing

Add/RemoveNodes and CPUS

Undo Human Error

OnlineUpgrades Online Patching

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Oracle Database 11g Release 2Online Application Upgrade

• Large, mission critical applications are often unavailable for tens of hours while a patch or an upgrade is installed

• Oracle Database 11g Release 2 introduces revolutionary new capabilities that allow online application upgrade with uninterrupted availability of the application

• The pre-upgrade application and the post-upgrade application can be used concurrently

The solutionEdition-based redefinition

• Revolutionary new features:

– edition

– editioning view

– crossedition trigger

• Code changes are installed in the privacy of a new edition

• Data changes are made safely by writing only to new columns or new tables not seen by the old edition

– An editioning view exposes a different projection of a table into each edition to allow each to see just its own columns

– A crossedition trigger propagates data changes made by the old edition into the new edition’s columns, or (in hot-rollover) vice-versa

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To:From:

Why Oracle Database 11g?For grid computing, high availability and storage

Low cost consolidated compressed storage

Expensive storage silos

Low cost clustered serversExpensive SMP Servers

Consistent, extreme performance Unpredictable performance

Fully utilized redundancyIdle redundancy

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