Amazon RDS for MariaDB Adds MariaDB 12.3 Preview Support
Amazon RDS for MariaDB now supports MariaDB 12.3 in the RDS Database Preview Environment for evaluation before general availability. This version introduces Oracle TO_DATE() compatibility, JSON and XML data types, and performance improvements for query optimization. The preview environment is for testing and instances are retained for a maximum of 60 days.
- →Support for MariaDB 12.3 in RDS Database Preview Environment
- →New MariaDB 12.3 Capabilities Available
- →Improved Query Optimizer Performance
- →Preview Environment Instance and Snapshot Limitations
Features (2) ›
- Support for MariaDB 12.3 in RDS Database Preview Environment
Amazon RDS for MariaDB now supports MariaDB 12.3 in a preview environment, allowing users to test the latest Long-Term Support release on Amazon RDS.
- New MariaDB 12.3 Capabilities Available
MariaDB 12.3 includes Oracle TO_DATE() function compatibility, a SQL Standard IS JSON predicate, a basic XML data type, and support for cursors on prepared statements.
Enhancements (1) ›
- Improved Query Optimizer Performance
The query optimizer in MariaDB 12.3 has been enhanced to handle reorderable LEFT JOIN statements and ordered scans over RANGE partitions more efficiently.
Notes (1) ›
- Preview Environment Instance and Snapshot Limitations
Database instances in the RDS Database Preview Environment are retained for a maximum of 60 days, and snapshots created within the preview environment can only be used to create or restore instances within that same environment.
https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-rds-maria-db-innovation-release-12-3-rds-database-preview-environment/