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Oracle Maximum Availability Architecture

Source Link: http://www.oracle.com/technology/deploy/availability/htdocs/maa.htm

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What is Oracle Maximum Availability Architecture?

Oracle Maximum Availability Architecture (MAA) is Oracle's best practices blueprint based on proven Oracle high availability technologies and recommendations. The goal of MAA is to remove the complexity in designing the optimal high availability architecture.


Businesses today operate in a highly networked, 24x7 global economy. They cannot afford to be down, and the IT systems supporting today’s businesses have to be reliable and always available. However, as more system capabilities are introduced, IT managers, architects and administrators often find it difficult to integrate a suitable set of features to build the unified high availability (HA) solution that fits all of their business requirements. In the absence of any clear and cohesive direction, IT managers often rely on hiring a team of consultants and go through hundreds of pages of documentation to determine the appropriate HA systems configuration, that in turn - may, or may not solve their unique business availability needs.

This is where MAA comes in. MAA has been conceptualized with the philosophy that designing an HA system involving Oracle technologies should not be complex, and should not involve any guesswork. With this goal, the MAA framework provides various in-depth best practices using Oracle's proven HA and grid computing technologies to help maximize systems availability and meet the highest SLA requirements for a business.

MAA Features

  • MAA involves HA best practice recommendations for a comprehensive set of Oracle products - Oracle Database, Oracle Application Server, Oracle Applications, Oracle Collaboration Suite, Grid Control. These best practices include architectural, configuration and operational best practices.
  • MAA considers various business SLAs to make these best practices as widely applicable as possible.
  • MAA leverages database grid servers with commodity servers and storage grid with resilient low cost storage to provide highly resilient, lower cost infrastructure.
  • MAA evolves with new Oracle versions and features.
  • MAA is hardware and OS independent.

MAA Benefits

  • MAA reduces the implementation costs for a highly available Oracle system by providing detailed configuration guidelines. The results of performance impact studies for different configurations are highlighted to ensure that the chosen highly available architecture can continue to perform and scale accordingly to business needs.
  • MAA reduces possible costs of downtime by providing best practices to eliminate or minimize downtime that could occur because of scheduled and unscheduled outages such as human errors, system faults and crashes, maintenance, data failures, corruptions, and disasters.
  • MAA gives the ability to control the length of time to recover from an outage and the amount of acceptable data loss under disaster conditions thus allowing mean time to recovery (MTTR) to be tailored to specific business requirements.

MAA Best Practice Publications

MAA publications consist of a series of architectural, configuration and operational HA best practice blueprints on various Oracle technologies. For example, the following diagram represents an HA architecture involving the Oracle Database and Oracle Application Server.

Fig. 1: Example of an HA Configuration using MAA Best Practices

This architecture involves identically configured primary and secondary sites. The primary site contains multiple application servers and a production database using Oracle Real Application Clusters (RAC) to protect from host and instance failures. The secondary site also contains similarly configured application servers, and a physical standby database kept synchronized with the primary database by Oracle Data Guard. Clients are initially routed to the primary site. If a severe outage affects the primary site, Data Guard fails over the production database role to the standby database, following which clients may be directed to this new primary database at the secondary site, thereby resuming business availability.

The various HA best practice publications are grouped under the following categories:

HA Best Practices for Oracle Database

Oracle Database 10g Release 2

Oracle Database 10g Release 1 Oracle Database 10g - General


HA Best Practices for Oracle Application Server

Oracle Application Server 10g Release 2

Oracle Application Server 10g

HA Best Practices for Oracle Applications

HA Best Practices for Oracle Collaboration Suite

HA Best Practices for Oracle Grid Control

Oracle Enterprise Manager 10g Release 2 and Release 3

Oracle Enterprise Manager 10g Release 1

Additional HA-related Information

Please visit the following links for additional HA-related information in various Oracle product areas:

MAA Presentations at Oracle OpenWorld

Oracle OpenWorld 2006
Oracle OpenWorld 2005
  • Best Practices To Achieve Business Continuity Using Oracle Applications and Oracle Database Technology - Presentation, Paper
  • What They Don't Print in the Doc - HA Best Practices by Gurus from Oracle's Maximum Availability Architecture Team - Presentation, Paper
  • Best Practices for Automatic Failover Using Oracle Data Guard 10g Release 2 - Presentation, Paper

Oracle MAA and Vendor Partnerships

The Oracle Maximum Availability Architecture focuses on complete solutions and best practices. As an integral part of these solutions our vendor partners also play key and complementary roles in enterprise customer deployments and therefore in MAA as well. For these reasons the Oracle MAA team also works closely with our vendor partners to ensure we can deliver complete and robust solutions to our customers. Below are the best practices and case studies done through these joint efforts.

Foundry Networks

Additional joint projects are currently in progress which will also have papers available soon:
  • SUN - Transitioning E-Business Suite to the Maximum Availability Architecture on SUN Systems: E-Business Suite 11i.10.2 and Database 10gR2
  • Engenio - Oracle’s Maximum Availability Architecture and Engenio’s Resilient Low Cost Storage Solution
Active Oracle MAA partners include: SUN, HP, Engenio, Apple, EMC and F5.

The MAA Team

The MAA team is a group of technical HA engineering experts with deep-domain expertise in designing, developing, implementing, deploying and supporting various Oracle and systems technologies at customer sites worldwide. This team is responsible for developing specific HA-oriented product capabilities, as well as working very closely with other internal engineering teams, consultants and enterprise customers with the goal to disseminate best-of-breed HA architecture and practices. The team’s close relationship and involvement with the different product engineers and their constant interaction with selected customers allow them to tailor these best practices to a wide variety of customer needs, and also provide and influence specific product enhancements and general future product directions.


Oracle Consulting Services (OCS) offers highly specialized consultants to efficiently lead the implemention of MAA solutions. If you are interested in a quote for services, please send an overview of your MAA requirements to MAA-NorthAmerica-OCS_us@oracle.com in North America or MAA-EMEA-OCS_ww@oracle.com in EMEA. (Other regional contact points will be set up soon.)

You may also contact maa_ww@oracle.com if you have specific questions/feedback related to the MAA best practice publications, or if you have any suggestions on important HA topics that are not currently covered by MAA.

Please note that these email lists may not be used for MAA support or general MAA-related questions - please contact Oracle Support for your MAA questions/support issues.


By eygle on 2007-03-24 22:12 | Comments (0) | Oracle摘 | 1386 |

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