Real Application Clusters

Oracle Real Application Clusters (RAC) is the world’s only scale-everything, highly available database architecture. It transparently scales both reads and writes for all workloads, including OLTP, analytics, AI vectors, SaaS, JSON, batch, text, graph, the Internet of Things (IoT), and in-memory. Oracle RAC effortlessly scales complex applications, such as SAP, Oracle Fusion Applications, and Salesforce workloads. It provides best-in-class high availability through most hardware and software failures and maintenance events. This is why leading banks, stock exchanges, telecoms, retailers, governments, and utilities use Oracle RAC for their critical, 24/7 workloads—on-premises and in the cloud.

Announcing Oracle Database 23ai: Bring AI to your data

Larry Ellison and Juan Loaiza discuss the GenAI strategy behind Oracle Database 23ai.

Why Oracle RAC's unique capabilities excel

New Generation Oracle RAC

Oracle Real Application Clusters 23ai includes many improvements that enable applications to achieve significantly better levels of availability and scalability than previous versions. These improvements create a new generation of Oracle RAC technology ready to meet the needs of next-generation workloads and applications, including AI workloads.

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.

AmerisourceBergen logo
Banque Misr Liban S.A.L. (BML) logo
Kassenärztliche Bundesvereinigung (KBV) logo
Korea Deposit Insuance Corporation logo
NTT Docomo Systems, Inc. logo
Port of Fujairah logo
Qatalum logo
Union Life logo
Wargaming logo

Wargaming uses Oracle RAC to achieve zero downtime for their databases

Hear more about Oracle RAC from customers and experts

Oracle RAC—The art of database options

Learn how Oracle RAC maximizes availability and enables horizontal scalability.


Simplify application development with Oracle RAC

Improve developer productivity with Oracle RAC.


Scaling PayPal workloads

Oracle RAC scales the most demanding online transaction processing workloads.


High Availability and Disaster Recovery Smart Features

Protect your applications from disruptions and downtime with high availability and disaster recovery.


Additional 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

Advanced Cluster File System

POSIX and X/OPEN compliant cluster file system supports multiple OS

Autonomous Health Framework

Maintain database availability and performance

Autonomous Database

The future of Oracle Database

Oracle Engineered Systems

The Best Platform for Oracle Database

Get started with Oracle RAC

Try Autonomous Database for free

Explore with $300 in free credits and always free instances of Autonomous Database.

Learn more

Attend webcasts and hands-on workshops hosted by Oracle Product Management.

Contact us

Interested in learning more? Contact one of our experts.