Amazon RDS Custom for Oracle Now Offers Enhanced Availability with Multi-AZ Deployments
Seattle, WA – July 1, 2025 – Amazon Web Services (AWS) is pleased to announce a significant enhancement to Amazon Relational Database Service (RDS) Custom for Oracle, with the introduction of Multi-AZ deployments. This new capability empowers customers running Oracle databases on RDS Custom to achieve even higher levels of availability and durability, ensuring their critical applications remain accessible and resilient.
Previously, RDS Custom for Oracle provided customers with the flexibility to manage and access the underlying operating system and database environment, offering a degree of control not available with standard RDS. While this offered significant advantages for specific workloads, the ability to automatically failover to a standby instance in a different Availability Zone (AZ) was a key feature that many organizations sought for their mission-critical Oracle databases.
The new Multi-AZ deployment option for RDS Custom for Oracle directly addresses this need. With Multi-AZ, RDS Custom for Oracle synchronously replicates your data to a secondary database instance in a different Availability Zone. In the event of planned maintenance, instance failure, or an Availability Zone outage, RDS Custom for Oracle will automatically initiate a failover to the standby replica. This robust failover process ensures minimal downtime and uninterrupted access to your data, providing a substantial boost to your application’s resilience.
Key Benefits of RDS Custom for Oracle Multi-AZ Deployments:
- Enhanced Availability: Experience significantly improved uptime for your Oracle databases, critical for business continuity and meeting stringent service level agreements (SLAs).
- Automated Failover: In the event of a failure, RDS Custom automatically detects the issue and promotes the standby replica to become the primary database, with no manual intervention required.
- Increased Durability: Synchronous data replication across AZs ensures that your data is protected against data loss in the event of an Availability Zone disruption.
- Simplified Management: AWS manages the underlying infrastructure, patching, and failover process, allowing your database administrators to focus on optimizing and managing your Oracle database, rather than the complexities of high availability configurations.
- Continued Customization: This new feature complements the existing benefits of RDS Custom for Oracle, allowing you to continue to leverage the flexibility of OS and database access for specific tuning or software installation needs, while now benefiting from automated Multi-AZ failover.
This advancement is particularly impactful for organizations that require a higher degree of control over their Oracle database environment but also need the assurance of high availability and automated disaster recovery. Whether you are running custom applications, migrating legacy systems, or managing databases with specific compliance requirements, RDS Custom for Oracle with Multi-AZ deployments offers a compelling solution.
AWS remains committed to continuously enhancing its database services to meet the evolving needs of its customers. The introduction of Multi-AZ deployments for RDS Custom for Oracle represents a significant step forward in providing both flexibility and robust availability for Oracle workloads on AWS.
Customers can enable Multi-AZ deployments for new RDS Custom for Oracle instances or modify existing instances to leverage this feature. We encourage you to explore the AWS Management Console and the AWS documentation for more details on how to get started with RDS Custom for Oracle Multi-AZ deployments.
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Amazon published ‘Amazon Relational Database Service Custom (Amazon RDS Custom) for Oracle now supports Multi-AZ deployments’ at 2025-07-01 17:00. Please write a detailed article about this news in a polite tone with relevant information. Please reply in English with the article only.