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Oracle Real Application Clusters

Oracle Real Application Clusters (RAC) allow customers to run a single Oracle Database across multiple servers in order to maximize availability and enable horizontal scalability, while accessing shared storage. User sessions connecting to Oracle RAC instances can failover and safely replay changes during outages, without any changes to end user applications, hiding the impact of the outages from end users.

Introducing Oracle Real Application Clusters 19c

Oracle Real Application Clusters features

Key capabilities

Cache synchronization

Application developers connect to any database instance in the cluster without making any changes to the application reducing downtime.

Smart cluster reconfiguration

Customers reduce the impact of service disruptions by automatically redirecting connections to surviving instances.

Full stack protection

Oracle RAC provides end-to-end protection of customer databases by safely replaying transactions during outages without impacting end user experience.

Flexibility

Multi-platform support

Customers can standardize across their Oracle Database environments by using Oracle RAC in Oracle Cloud, on Oracle engineered systems, and on generic hardware.

Licensing choices

Customers reduce cloud and on-premises costs by using a combination of Oracle RAC subscription-based pricing and licenses.

Autonomous Database integration

Database administrators save time by utilizing pre-configured Oracle RAC capabilities in Autonomous Database.

Scalability

Scale features and functions

Rapidly scale all Oracle Database features and functions across multiple instances to address sudden changes in customer workloads, without the need for manual intervention.

No application changes

Scale applications up to one hundred nodes in a cluster without application changes, improving DBA and developer productivity.

Faster OLTP

Oracle RAC improves Oracle Database performance for crucial enterprise application workloads, including Oracle E-Business Suite, Oracle PeopleSoft, and SAP ERP Central Component (ECC) by scaling workloads across all instances of the cluster.

More scalable analytics

Oracle RAC allows customers to easily scale analytics workloads by eliminating the need for replica databases and database level conflict resolution, significantly improving database administrator productivity.

Availability

Reduce unplanned downtime

Oracle RAC enables customer databases to continue to run across component failures, reducing potential data loss and minimizing unplanned downtime created by single-point-of-failure designs.

Eliminate planned downtime

Customers eliminate planned, maintenance related downtime by using Oracle RAC to implement rolling upgrades and patching on a server-by-server basis.

Sharding

IT teams use Oracle RAC with Oracle Sharding to provide high availability for each shard in the database.

Integration

Tight integration with Oracle Active Data Guard and Oracle GoldenGate enables IT teams to maximize Oracle Database availability and protection using proven Oracle Maximum Availability Architecture (MAA) best practices.

Customer successes

Oracle Real Application Clusters are used by customers around the world to increase Oracle Database availability and scale database performance across multiple database servers.

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Wargaming uses Oracle RAC to achieve zero downtime for their databases

Oracle Real Application Clusters use cases

Resources

Related products and technologies

Oracle RAC One Node

Enhance availability for single instance databases

Application Continuity

Provide continuous availability

Oracle Clusterware

Use clustered servers as a single system

Automatic Storage Management

Simplified storage management

Oracle ACFS

Support multiple OS and server platforms

Autonomous Health Framework

Maintain database availability and performance

Quality of Service Management

Monitor performance, detect bottlenecks, and manage resources

VM Templates for Oracle Database

Enable rapid application deployment

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