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Page 1: Implementing a Highly Available Oracle EBS · PDF fileImplementing a Highly Available Oracle EBS Architecture **** ***** ... Oracle EBS Architecture: Application Tier ... Oracle RAC

Implementing a Highly Available Oracle EBS Architecture

**** ******Oracle OpenWorldSeptember 2008

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Agenda

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Oracle EBS Architecture

Single Points of Failure

High Availability Design

High Availability Architecture Project Considerations

Additional Sessions of Interest

Reference Notes and Web Sites

Q & A

Agenda

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Oracle EBS Architecture

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Oracle EBS Architecture

Application TierClient Tier Database Tier

3-Tier Logical Architecture

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Oracle EBS Architecture: Application Tier

Web Node– Self Service Applications– iStore, iSupplier,

iProcurement, SSHR

Forms Node– Core Applications– AP, Purchasing, HR, etc

Concurrent Node– Oracle EBS Scheduling Utility– Oracle Delivered/Custom

Application Tier

Database Tier

Client Tier

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Oracle EBS Architecture: Database Tier

Database Node– Database Server– Database Listener

Concurrent Node – Scheduler– Oracle Delivered/Custom

Application Tier

Database Tier

Client Tier

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Single Points of Failure (SPOFs)

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Single Points of Failure (SPOFs)

Servers– Planar, Memory, Power

Supply– Internal Disk– Network Interface Card (NIC)– Disk Controller

Network– Cables– Switches– Routers– Load Balancers

Network Attached Storage (NAS)& Storage Area Network (SAN)– Device Failure– Disk Failure– Data Access Paths– Data Controllers

Data Center– Natural Disaster– Catastrophic Event

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Single Points of Failure (SPOFs)

Web Node– Service Unavailable– Server Unavailable– Network Unavailable– Storage Unavailable– Data Center Unavailable

Forms Node– Service Unavailable– Server Unavailable– Network Unavailable– Storage Unavailable– Data Center Unavailable

Concurrent Node– Service Unavailable– Server Unavailable– Network Unavailable– Storage Unavailable– Data Center Unavailable

Database Node– Service Unavailable– Server Unavailable– Network Unavailable– Storage Unavailable– Data Center Unavailable

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High Availability Design

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Oracle EBS Architecture (Review)

Application TierClient Tier Database Tier

3-Tier Logical Architecture

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High Availability Design: Eliminating SPOFs

ServersMultiple ServersRedundant Array of Disks (RAID)Multiple NICsMultiple Disk Controllers

NetworkRedundant CablesRedundant SwitchesRedundant RoutersClustered Load Balancer

Network Attached Storage (NAS)& Storage Area Network (SAN)

Clustering RAIDReplicationMultiple Access PathsMultiple Controllers

Data CenterOffsite Backup StorageOn Demand Data CenterMultiple Data Centers

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High Availability Design: Eliminating SPOFs

Web NodeLoad Balance Web Nodes

Forms NodeLoad Balance Forms Nodes

• Forms Servlets (R11i & R12)

• Forms Metric Server (R11i only)

Concurrent NodeParallel Concurrent Processing

Database NodeOracle DataGuard

• Physical DataGuard Only (R11i and R12)

Oracle Real Application Clusters (RAC)

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High Availability Design

Load Balancing Web

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Load Balancing Web Nodes Determine and configure method of Load Balancing– DNS – Hardware/Software Load Balancing

– Session persistenceDefine Web Entry PointImplementation– DNS/Network Configuration– Update Context File Entries with OAM or Advanced

Configuration Wizard– Run Autoconfig

217368.1 Advanced Configurations and Topologies for the Enterprise Deployments of E-Business Suite380489.1 Using Load-Balancers with Oracle E-Business Suite Release 12

List of Tested Load Balancers, Firewalls, and Stand-Alone SSL Accelerators:http://www.oracle.com/technology/products/ias/hi_av/tested_lbr_fw_sslaccel.html

High Availability Design: Application Tier

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High Availability Design

Load Balancing Forms

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Load Balancing Forms Nodes using Forms ServletsSupport– Preferred method for Load Balancing Forms for R11i– Only method for Load Balancing Forms for R12

Implementation– Update context file entries with OAM or the Advanced

Configuration Wizard– Run Autoconfig

217368.1 Advanced Configurations and Topologies for the Enterprise Deployments of E-Business Suite380489.1 Using Load-Balancers with Oracle E-Business Suite Release 12

List of Tested Load Balancers, Firewalls, and Stand-Alone SSL Accelerators:http://www.oracle.com/technology/products/ias/hi_av/tested_lbr_fw_sslaccel.html

High Availability Design: Application Tier

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High Availability Design

Parallel Concurrent Processing

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Parallel Concurrent ProcessingDistribute Concurrent Managers across multiple nodes– Distribute load – Provide fault tolerance

Implementation: Concurrent Manager Definition– Define primary and secondary nodes– Specialization Rules: Include/Exclude Lists– Workshifts

185489.1 Implement Parallel Concurrent ProcessingRefer to chapter 'Defining Concurrent Managers' section 'Overview of Parallel Concurrent

Processing' in Refer to Oracle Applications System Administrator's Guide - Configuration in the Oracle Applications Documentation Library for more details.

High Availability Design: Application Tier

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Implementing Parallel Concurrent Processing

High Availability Design: Application Tier

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Adding EBS Nodes

Non-Shared Filesystem

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Adding an EBS Node in a Non-Shared Filesystem environmentFollow Rapid Clone steps (R11i and R12)– Includes a copy of the source to the target

Execute step to add the additional node:cd <COMMON_TOP>/clone/bin perl adaddnode.pl

230672.1 Cloning Oracle Applications Release 11i with Rapid Clone406982.1 Cloning Oracle Applications Release 12 with Rapid Clone

High Availability Design: Application Tier

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High Availability Design: Application Tier

APPL_TOP

COMMON_TOP

8.0.6

iAS

APPL_TOP

COMMON_TOP

8.0.6

iAS

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Specifying Node TypeXML Context File Entries

"s_isDB""s_isWeb""s_isWebDev""s_isAdmin""s_isForms""s_isFormsDev""s_isConc""s_isConcDev"

464018.1 How to Add a New Node to The Application Tier, and Make It a Web Server Node Only

High Availability Design: Application Tier

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High Availability Design: Application Tier

Web/Forms Node Database Node

`

`

`

Load Balancer

Web/Forms NodeConcurrent Node

Concurrent Node

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Adding EBS Nodes

Shared Filesystem

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High Availability Design: Application Tier

Shared Application Tier Filesystem (R11i and R12)– Expands the concept of a shared APPL_TOP (APPL_TOP

and COMMON_TOP)– Includes Application Tier Technology Stack – Requires the use of a shared disk resource mounted to

each node• May implement utilizing Network Attached Storage

(NAS)• May utilize features of the NAS device to assist with

maintenance tasks

*Refer to MetaLink Notes for commands for R11i and R12233428.1 Sharing the Application Tier File System in Oracle Applications 11i 384248.1 Sharing The Application Tier File System in Oracle E-Business Suite Release 12Guidelines about using NFS and NAS devices for Oracle software or database files:

http://download.oracle.com/docs/cd/B19306_01/install.102/b15660/app_nas.htm#sthref1131

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High Availability Design: Application Tier

Multi-Node Shared Application Tier Filesystem Benefits Reduce maintenance requirementsReduce disk requirementsPerform patching with Distributed AD– Utilizes multiple application nodes – Reduces application patching time

Reduces time to add additional nodes

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High Availability Design: Application Tier

Adding an EBS Node in a Shared Application Tier Filesystem Environment (R11i & R12)

Prepare existing node by executing adprecloneMount the shared filesystemCreate new context file*Run autoconfig*

*Refer to Metalink Notes for commands for R11i and R12233428.1 Sharing the Application Tier File System in Oracle Applications 11i, Section 5: Adding a node

to a shared file system 384248.1 Sharing The Application Tier File System in Oracle E-Business Suite Release 12, Section 4:

Adding a Node to a Shared Application Tier File System

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High Availability Design: Application Tier

Tape

APPL_TOP

COMMON_TOP

8.0.6

iAS

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Specifying Node TypeXML Context File Entries

"s_isDB""s_isWeb""s_isWebDev""s_isAdmin""s_isForms""s_isFormsDev""s_isConc""s_isConcDev"

464018.1 How to Add a New Node to The Application Tier, and Make It a Web Server Node Only

High Availability Design: Application Tier

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High Availability Design: Application Tier

Web/Forms Node Database Node

`

`

`

Load Balancer

Web/Forms NodeConcurrent Node

Concurrent Node

NAS

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Int

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4

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Ultra 3 SCSI

146GBUltra 3 SCSI

146GBUltra 3 SCSI

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146GBUltra 3 SCSI

146GBUltra 3 SCSI

146GB

APPL_TOP

COMMON_TOP

8.0.6

iAS

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Oracle DataGuard for EBS R11i and R12Physical StandbyForce LoggingArchive redo log spaceDocument and test database patching proceduresDocument and test failover procedures

216212.1 Business Continuity for Oracle Applications Release 11i, Database Releases 9i and 10g452056.1 Business Continuity for Oracle Applications Release 12 on Database Release 10gR2

High Availability Design: Database Tier

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High Availability Design: Database Tier

Application Node Database Node

`

`

`

Load Balancer

Application Node

Database Node

Oracle DataGuard

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Oracle RAC for EBS R11i and R12Clustered database tierIncreases availabilityIncreases scalability

362135.1 Configuring Oracle Applications Release 11i with Oracle10g Release 2 Real Application Clusters and Automatic Storage Management

388577.1 Using Oracle 10g Release 2 Real Application Clusters and Automatic Storage Management with Oracle E-Business Suite Release 12

High Availability Design: Database Tier

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High Availability Design: Database Tier

Application Node Database Node

`

`

`

Load Balancer

Application Node

Oracle RAC

Database Node

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High Availability Design

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HA Design: Spanning Data Centers

Tape

Tape

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HA Design: Spanning Data Centers

NAS

Concurrent Node Database Node

Web/Forms Node

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Int

0

1

2

3

4

5

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Ultra 3 SCSI

146GBUltra 3 SCSI

146GBUltra 3 SCSI

146GB

Ultra 3 SCSI

146GBUltra 3 SCSI

146GBUltra 3 SCSI

146GB

Oracle DataGuard

Database Node Concurrent Node

Web/Forms Node

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146GBUltra 3 SCSI

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NAS

Replication

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HA Design: Spanning Data Centers

Tape

Tape

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HA Design: Spanning Data Centers

OracleRAC

NAS

OracleRAC

Concurrent Node Database Node

Web/Forms Node

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146GBUltra 3 SCSI

146GBUltra 3 SCSI

146GB

Oracle DataGuard

Database Node Concurrent Node

Web/Forms Node

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146GBUltra 3 SCSI

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Replication

Database Node Database Node

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Tips and TechniquesConsider the extent of HA required for development, test, QA environmentsNetwork Bandwidth– Measure network latency between all nodes– Measure network latency between data centers

Multi-node = multiple runs of autoconfigNot all EBS configuration can be load balanced– iPayment, Workflow Notification Mailer

Monitor proactivelyUse OAM for context file change managementUse autoconfig templates for configuration customizationsConfigure all node types for all servers; start only services for specific node type

High Availability Design

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Tips and TechniquesReview, modify and document changes to cloning process Review, modify and document changes to patching process Test, test, test…..Document all processes and procedures– Adding nodes, failover procedures, etc, etc…

High Availability Design

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HA Architecture Project Considerations

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HA Architecture Project Considerations

Recovery

Cost

SLA

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HA Architecture Project Considerations

Service Level Agreement– Contract between customers

and providers

– Planned Downtime– Maintenance windows– OS Upgrades, System

Upgrades, Database maintenance, etc

– Unplanned Downtime – Hardware Failures– Service Failures

Recovery

Cost

SLA

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HA Architecture Project Considerations

Recovery Time– Document points of failure

– Document and test recovery procedures

– Document recovery time lines

Recovery

Cost

SLA

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HA Architecture Project Considerations

Estimate Cost to deliver SLAEstimate Cost of Downtime– Revenue– Work hours– Analyze impact of intangibles Recovery

Cost

SLA

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Additional Sessions of Interest

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Thursday, September 25, 2008

13:30-14:30 PM, Moscone West 2002/04Session S298389Advanced Deployment Architectures for Oracle E-BusinessSteven Chan, Ivo Dujmovic

15:00-16:00 PM, Moscone West 2007Session S298391 Oracle Maximum Availability Architecture Best Practices:

Oracle E-Business SuiteMetin Yilmaz, Lyn Pratt

Additional Sessions of Interest

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Reference Notes and Web Sites

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Reference Notes and Web Sites

Cloning Oracle Applications Release 12 with Rapid Clone406982.1

Cloning Oracle Applications Release 11i with Rapid Clone230672.1

How to Add a New Node to The Application Tier, and Make It a Web Server Node Only

464018.1

Using Load-Balancers with Oracle E-Business Suite Release 12380489.1

Using Distributed AD in Applications Release 11.5 236469.1

Sharing The Application Tier File System in Oracle E-Business Suite Release 12384248.1 Sharing the Application Tier File System in Oracle Applications 11i 233428.1

Implement Parallel Concurrent Processing185489.1

Using Forms Socket Mode with Oracle E-Business Suite Release 12384241.1

Using Forms Listener Servlet with Oracle Applications 11i 201340.1

Advanced Configurations and Topologies for the Enterprise Deployments of E-Business Suite

217368.1

TitleMetaLink Note

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Reference Notes and Web Sites

Using Oracle 10g Release 2 Real Application Clusters and Automatic Storage Management with Oracle E-Business Suite Release 12

388577.1

Upgrading Oracle Applications 11i DB to Oracle Database 10g with Physical Standby in Place

340859.1

Applying [DB] Patch Sets / Interim Patches with Physical Standby in Place 187242.1

Upgrading Oracle Applications 11i DB to DB 10gR2 with Physical Standby in Place406652.1

Business Continuity for Oracle Applications Release 12 on Database Release 10gR2 452056.1

Business Continuity for Oracle Applications Release 11i, Database Releases 9i and 10g

216212.1

Maximum Availability Architecture and Oracle E-Business Suite Release 11i403347.1

Configuring Oracle Applications Release 11i with Oracle10g Release 2 Real Application Clusters and Automatic Storage Management

362135.1

TitleMetaLink Note

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Reference Notes and Web Sites

List of Tested Load Balancers, Firewalls, and Stand-Alone SSL Accelerators– http://www.oracle.com/technology/products/ias/hi_av/te

sted_lbr_fw_sslaccel.htmlRefer to this guide for guidelines about using NFS and NAS devices for Oracle software or database files. – http://download.oracle.com/docs/cd/B19306_01/install.1

02/b15660/app_nas.htm#sthref1131Parallel Concurrent Processing (PCP)– Refer to chapter 'Defining Concurrent Managers'

section 'Overview of Parallel Concurrent Processing' in Refer to Oracle Applications System Administrator's Guide - Configuration in the Oracle Applications Documentation Library for more details.

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Reference Notes and Web Sites

Oracle Blogs and Forums– http://blogs.oracle.com/stevenChan– http://forums.oracle.com– http://mix.oracle.com

OAUG SIGs– OAUG E-Business Applications Technology SIG

http://atssig.oaug.org– OAUG Database SIG

http://dbsig.oaug.org

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