Amazon RDS for MariaDB Adds Support for MariaDB Version 12.3
Amazon Web Services has announced official support for MariaDB 12.3.2 on its Relational Database Service, detailing new versioning policies and support timelines.
Amazon RDS continues to expand its open-source database support with the addition of MariaDB 12.3.2.
- Amazon RDS for MariaDB now supports community version 12.3.2 as of August 7, 2026.
- AWS classifies X.Y as a major version (e.g., 12.3) and Z as the minor version (e.g., 12.3.2).
- Standard support for this specific minor version is scheduled to conclude in August 2027.
- Users can manage and upgrade versions via the AWS Management Console or AWS CLI.
Implementation of MariaDB 12.3 on Amazon RDS
Amazon Web Services (AWS) has expanded its managed database offerings by announcing support for MariaDB 12.3 on Amazon Relational Database Service (RDS). This update specifically brings version 12.3.2 to the platform, following its initial community release in late May 2026. The integration allows developers to deploy MariaDB 12.3 instances with the standard RDS benefits of automated backups, point-in-time recovery, and managed scaling.
The release of MariaDB 12.3 on RDS follows a established cadence for engine updates. According to AWS documentation, the service aim to support new major versions within three months of the community release of the first patch version, while minor versions are typically integrated within 30 days of their community availability.
Version Classification and Terminology
AWS employs a specific nomenclature for MariaDB versioning that differs slightly from some other engine types. In the Amazon RDS environment, version numbers follow an X.Y.Z format. The "X.Y" segment is designated as the major version, while "Z" represents the minor version number. For example, a transition from MariaDB 10.5 to 10.6 is categorized as a major version upgrade. Conversely, moving from 12.3.1 to 12.3.2 is considered a minor version change.
This classification is significant for maintenance planning. Major version upgrades often involve changes that are not backward compatible and require manual intervention or specific configuration checks. Minor version upgrades, however, typically focus on bug fixes, security patches, and performance optimizations that maintain compatibility with existing applications.
Availability and Release Timelines
The community version of MariaDB 12.3.2 was released on May 28, 2026. AWS completed the integration for Amazon RDS on August 7, 2026. Along with this release, AWS has provided transparency regarding the lifecycle of this version. The end of standard support for MariaDB 12.3.2 is currently projected for August 2027.
Database administrators should note the end-of-support dates for other concurrent versions to plan their migration paths effectively. For instance, MariaDB 11.4.12, which arrived on RDS in June 2026, also has a support window extending into June 2027. The 10.6 series, a long-term support release, is slated for support until November 2026 for several of its minor versions.
Managing Versions via AWS CLI
To identify the specific versions available in a given AWS Region, administrators can utilize the AWS Command Line Interface (CLI). Because default versions can vary by region, AWS recommends querying the service directly to ensure accuracy during deployment. The command aws rds describe-db-engine-versions --engine mariadb returns a list of all supported engine versions.
For users looking for the default version for a specific major release, the CLI allows for filtered queries. For example, running a command that specifies the engine as 'mariadb' and the major version as '12.3' will return the specific minor version that RDS will use by default if no minor version is explicitly requested during instance creation.
The Database Preview Environment
Before a version reaches general availability, it often passes through the Database Preview environment. MariaDB 12.3.1 was previously made available in this specialized environment to allow users to test the new engine features without impacting production workloads. The Preview environment is distinct from standard RDS environments and does not carry the same service level agreements (SLAs), but it serves as a critical phase for early adopters to validate application performance against the latest MariaDB community server changes.
The MariaDB 12.3 series introduces various changes and improvements documented by the MariaDB Foundation. While AWS handles the underlying infrastructure, the software-level improvements in the 12.3 series are inherited directly from the community server releases, including optimizations to the storage engine and query processing capabilities.
Upgrade Paths and Maintenance
Users currently running older versions, such as MariaDB 10.5 or 10.11, can initiate upgrades to version 12.3.2. AWS provides two primary methods for these updates: manual upgrades, which can be performed at any time by modifying the DB instance, and automated upgrades, which occur during a user-defined maintenance window if the 'Auto minor version upgrade' setting is enabled.
It is important to note that once a major version reaches its end of standard support, Amazon RDS may automatically upgrade instances to the next supported major version if the user has not performed the migration manually. Users are encouraged to utilize the published currency timelines to align their application testing with the AWS support schedule.
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