# Implement disaster recovery with cross-zonal Data Guard on Oracle Database@AWS

- Source: https://docs.oracle.com/en/solutions/cross-zone-dr-db-at-aws/index.html
- Date: 2025-08
- Type: reference-architecture
- Services: exacs, adg, aws
- Tags: database, multicloud, aws, ha-dr

## Summary (catalog)

Cross-AZ Data Guard on Database@AWS for HA. Synchronous redo transport between AZs for zero data loss. Fast-Start Failover for automatic database switchover on failure.

## Architecture (fetched from source)

About Implementing Disaster Recovery with Cross-Zone Data Guard on Oracle Database@AWS 
 
 
 
 
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About Implementing Disaster Recovery with Cross-Zone Data Guard on Oracle Database@AWS 

 

 

 
 This solution playbook describes the Oracle Active Data Guard setup on Oracle Exadata Database Service on Dedicated
 Infrastructure on Oracle Database@AWS across two availability zones in the same region. Oracle Database@AWS is the Oracle Database service running on Oracle Cloud Infrastructure (OCI), colocated in Amazon AWS data centers. Oracle Database@AWS offers Oracle Exadata Database Service on Dedicated
 Infrastructure and Oracle Autonomous Database on Dedicated Exadata Infrastructure , natively integrated into the AWS platform. Oracle Data Guard enables you to synchronously transport the data from the primary to the standby database to ensure zero data loss. 
 

 
 Oracle Database@AWS offers built-in high availability and scalability with Oracle Real Application Clusters (Oracle
 RAC) while ensuring low latency for AWS applications. Extending the solution with an Active Data Guard standby database hosted on another Oracle Exadata Cloud Infrastructure in another availability zone within the same region enhances availability and data protection in case of an entire availability zone outage. 
 

 
 Active Data Guard adds comprehensive data corruption prevention with automatic block repair, online upgrades and migrations, offload workload to standby with read-mostly scale-out, and enable Application Continuity to mask database outages during planned and unplanned events from end-users and ensure uninterrupted applications.
 

 
 Oracle Exadata Database
 Service on Oracle Database@AWS is certified at the Gold tier of Oracle Maximum Availability Architecture (MAA). This validation confirms that the service meets Oracle’s highest standards for high availability and disaster recovery, with support for failover across multiple AWS availability zones as well as across AWS regions. With Gold MAA certification, Oracle Exadata Database
 Service on Oracle Database@AWS blends cloud flexibility with proven resilience, ensuring your mission-critical workloads stay protected from server failures as well as data center outages. 
 

 

 
 
Before You Begin

 

 
 Ensure your deployment meets the following requirement: 

 
The configuration and deployment instructions in this solution playbook require the Exadata infrastructure and the Exadata VM Cluster to be already deployed in the standby availability zone, and that the network IP CIDR ranges for the primary and standby Exadata VM Clusters do not overlap.

 
Review the following resources:

 
 
- Oracle Exadata Database Service on Dedicated Infrastructure Overview 
 
- Deploy Oracle
 Database@AWS 
 
 
Review these related solutions:

 
 
- Security best practices for your VPC in the Amazon Virtual Private Cloud User Guide 
 
- Plan for AWS IP address space using ODB Network Design 
 
 

 

 
 
About Required Services and
 Roles

 

 
This solution requires the following services and roles:

 
 
- Oracle Cloud Infrastructure
 Networking 
 
- Oracle Exadata Database
 Service 
 
 
These are the roles needed for each service.

 

 
 
 
 Service Name: Role 
 Required to... 
 
 
 
 
 Oracle Exadata Database
 Service : manage database-family 
 Manage the database, including adding and operating Active Data Guard deployments 
 
 
 OCI Networking : manage vcn-family 
 Manage the network components, including VCNs, subnets, security rules, and VCN
 peering 
 
 
 
 

 

 

 

 

 

 
 Title and Copyright Information 

 

 
Implement Disaster Recovery with Cross-Zone Data Guard on Oracle Database@AWS

 
G40862-01

 
August 2025

 
 Copyright © 2025, 

Oracle and/or its affiliates.