--- title: "MariaDB Community Server 12.3 LTS: How It Scales AI Workloads and Delivers 4x Write Performance" publish_date: 2026-05-28 author: "Ralf Gebhardt" channel: - name: "Product" url: "/resources/blog/channel/product.md" tags: - name: "ai" url: "/resources/blog/tag/ai.md" - name: "Community Server" url: "/resources/blog/tag/community-server.md" - name: "InnoDB" url: "/resources/blog/tag/innodb.md" - name: "MariaDB Releases" url: "/resources/blog/tag/mariadb-releases.md" - name: "RAG" url: "/resources/blog/tag/rag.md" - name: "Vector Search" url: "/resources/blog/tag/vector-search.md" --- # MariaDB Community Server 12.3 LTS: How It Scales AI Workloads and Delivers 4x Write Performance ## Key takeaways - **Long-term stability until 2029:** MariaDB 12.3 arrives as a production-ready, Long Term Support (LTS) release that guarantees three years of continuous security updates and maintenance for ultimate peace of mind. - **A massive 4x performance boost:** A complete overhaul of how data is written gives you four times the processing speed on heavy workloads, helping you squeeze more power out of your existing hardware and delay costly infrastructure upgrades. - **Built-in support for AI applications:** By optimizing vector searches directly alongside your regular data, this release makes it faster and simpler to scale modern AI tools like smart chatbots and recommendation engines without needing a separate database. - **Frictionless migration from Oracle and MySQL:** Enhanced compatibility features remove the typical technical roadblocks, making it much cheaper and less risky to move your legacy systems over to a flexible, open-source platform. We are thrilled to announce that **MariaDB Community Server 12.3** has reached **Generally Available (GA)** status. As our latest **Long Term Maintenance (LTS)** release, version 12.3 marks the culmination of the 12.x rolling release cycle (12.0–12.2), bringing together a year of rapid innovation into a rock-solid, production-ready package **maintained for the next three years**. From scaling modern AI workloads to accelerating core database performance, MariaDB Server 12.3 delivers a versatile, open-source foundation to power your community deployments and development pipelines. ## What Strategic Value Does MariaDB Server 12.3 Deliver? In today’s landscape, a database must be an intelligent, highly available engine that reduces operational friction. MariaDB Server 12.3 delivers this strategic value across four key pillars: 1. **AI-Readiness with Performance:** By optimizing distance calculations for high-dimensional vectors and matryoshka embeddings, **12.3 ensures RAG (Retrieval-Augmented Generation) applications scale with maximum efficiency and zero latency penalty.** 2. **TCO Reduction through Throughput:** The **new binary log implementation delivers a 4x performance boost for write-heavy workloads**, allowing organizations to process significantly more data on existing hardware and effectively delay costly infrastructure expenditures. 3. **Lowered Migration Barriers:** Enhanced compatibility for **Oracle** (including `(+)` join syntax and `TO_DATE`) and **MySQL** (`caching_sha2_password`) reduces the technical risk and cost of migrating legacy applications to an open-source platform. 4. **Operational Transparency & Uptime:** Expanded **Performance Schema** metrics and Galera audit logging provide the deep observability required to maintain peak cluster health and reduce Mean Time to Resolution (MTTR). ## What Are the Key New Features in MariaDB Server 12.3 LTS? MariaDB Server 12.3 includes all features introduced during the 12.x rolling series. Here is a breakdown of what makes this version the new standard for stability and innovation. ### How Does MariaDB 12.3 Improve Vector Search for AI Applications? Building on the foundation laid in the 11.x series, MariaDB 12.3 introduces **optimized distance calculations for modern embeddings** (such as those from OpenAI and Gemini). New extrapolation techniques make vector search **significantly faster**, allowing MariaDB to serve as both your relational and vector database in a single, efficient footprint. ### How Does the New Binary Log Deliver a 4x Performance Boost? MariaDB 12.3 delivers a significant improvement in write performance through a fundamental re-engineering of the binary log. **By migrating core binlog components directly into the InnoDB engine, this architectural shift removes redundant synchronization points** to accelerate replication and write-heavy workloads — including global e-commerce platforms and real-time IoT networks. This feature is fully ready for production and can be enabled via a simple configuration change. ### What New Query Control and Compatibility Features Are in 12.3? MariaDB 12.3 gives DBAs unprecedented control over query execution while expanding the engine’s reach: - **Advanced Optimizer Precision Tuning:** New hints like `JOIN_FIXED_ORDER` and `MAX_EXECUTION_TIME` allow manual guidance of the optimizer for precise query performance tuning. - **SQL Compliance and Compatibility:** The new **XML data type**, SQL Standard `SET PATH`, and deep Oracle compatibility features (associative arrays, `SYS_REFCURSOR`) make MariaDB 12.3 a fit for any tech stack and simplify legacy migrations. ### How Does MariaDB 12.3 Improve Security and Observability? MariaDB 12.3 increases system transparency while ensuring security protocols don’t obstruct workflows: - **Secure Connectivity:** With **native support for `caching_sha2_password`**, MariaDB 12.3 delivers an improved migration workflow that ensures compatibility with the latest MySQL-based clients and drivers. - **Enhanced Observability:** Expanded **Performance Schema** metrics and improved **Audit Logging for Galera replication** give DevOps teams the visibility needed to maintain peak cluster health. ## How Long Will MariaDB Community Server 12.3 LTS Be Supported? MariaDB Community Server 12.3 is designed for users who prioritize a stable production environment: - **Supported Until June 2029:** This version will receive continuous bug fixes, security updates, and stability improvements for the next three years, providing a reliable foundation for long-term projects. - **Stability Over Velocity:** While quarterly rolling releases deliver the latest features as they arrive, **LTS releases are built for organizations that require predictable maintenance windows** and a codebase that won’t change beneath them. ## Is MariaDB Enterprise Server 12.3 Also Coming? The innovations in 12.3 aren’t exclusive to the community. **MariaDB Enterprise Server 12.3 Beta is coming soon.** This release will bring the performance and efficiency of the 12.3 LTS series to the Enterprise Platform, complete with the exclusive stability and reliability enhancements required for mission-critical, commercial deployments — including advanced clustering, hardened security, and 24/7 world-class support. ## How Do You Upgrade to or Download MariaDB Community Server 12.3? The transition from **11.4 LTS** or **12.2 Rolling** is designed to be seamless: - **Download:** [MariaDB Community Server 12.3](https://mariadb.com/downloads/community-server/) - **Documentation:** [MariaDB 12.3 Changes & Improvements](https://mariadb.com/docs/release-notes/community-server/12.3/mariadb-12.3-changes-and-improvements) **Upgrade to MariaDB Community Server 12.3 today to start using the latest GA features.** ## Frequently Asked Questions ### What is MariaDB Community Server 12.3 LTS and why does it matter? MariaDB Community Server 12.3 is the latest Long Term Maintenance (LTS) release of MariaDB’s open-source relational database. It consolidates all innovations from the 12.x rolling release series (12.0–12.2) into a single, production-ready version that will be maintained with bug fixes and security updates through June 2029. The release is significant because it combines AI workload readiness, a major write-performance improvement, and broader SQL compatibility — making it suitable for both new projects and legacy migration efforts. ![]() ### How much faster is the new binary log in MariaDB 12.3 compared to previous versions? MariaDB 12.3 delivers a **4x performance boost** for write-heavy workloads through a fundamental re-engineering of the binary log. The core improvement is architectural: binlog components have been migrated directly into the InnoDB engine, removing redundant synchronization points that previously created bottlenecks. This benefits any workload with high write throughput — such as e-commerce transaction processing or real-time IoT data ingestion — and can be enabled in production with a simple configuration change. ![]() ### Can MariaDB 12.3 be used as a vector database for AI applications like RAG? Yes. MariaDB 12.3 introduces optimized distance calculations specifically designed for high-dimensional vectors and matryoshka embeddings — the kind produced by modern AI models such as those from OpenAI and Gemini. New extrapolation techniques make vector search significantly faster, meaning MariaDB can serve as both the relational database and the vector store within a single deployment. This is particularly relevant for RAG (Retrieval-Augmented Generation) applications that need to retrieve semantically similar content at low latency. ![]() ### Does MariaDB 12.3 support Oracle and MySQL compatibility features? MariaDB 12.3 includes expanded compatibility for both Oracle and MySQL. On the Oracle side, it adds support for `(+)` join syntax, `TO_DATE`, associative arrays, and `SYS_REFCURSOR`. For MySQL, it adds native support for `caching_sha2_password`, which is the default authentication plugin in modern MySQL deployments. Together, these features reduce the technical friction of migrating applications from either Oracle or MySQL to MariaDB’s open-source platform. ![]() ### How long will MariaDB Community Server 12.3 LTS receive updates and security patches? MariaDB Community Server 12.3 LTS will receive continuous bug fixes, security updates, and stability improvements until **June 2029** — a three-year maintenance window. ![]() ### What is the difference between a MariaDB LTS release and a rolling release? A rolling release (such as 12.0, 12.1, or 12.2) delivers new features on a quarterly basis, does not receive patches and is suited for teams that want the latest capabilities as they ship. An LTS (Long Term Maintenance) release, like 12.3, is a consolidated snapshot of a full release cycle that prioritizes stability — receiving only bug fixes, security patches, and critical stability improvements for its maintenance lifetime. ![]() ### What new query control features does MariaDB 12.3 give DBAs? MariaDB 12.3 introduces new optimizer hints, including `JOIN_FIXED_ORDER` and `MAX_EXECUTION_TIME`, which allow database administrators to manually direct the query optimizer for predictable performance outcomes. These additions give DBAs fine-grained control in situations where the optimizer’s automatic choices are suboptimal — useful in complex analytical queries or latency-sensitive production workloads. ![]() ### When will MariaDB Enterprise Server 12.3 be available? MariaDB Enterprise Server 12.3 Beta is coming soon, the GA release will be available as part of the next MariaDB Enterprise Platform release later this year. It will bring the performance and compatibility improvements of the Community 12.3 LTS release to the commercial Enterprise Platform, along with additional stability and reliability enhancements suited for mission-critical deployments. Enterprise customers benefit from advanced clustering, hardened security features, and 24/7 commercial support — capabilities not included in the Community edition. The enterprise version includes five years of standard support, with the option to extend coverage for an additional three years. ![]() ### Is MariaDB Server 12.3 a good choice for new production deployments? Yes. MariaDB Server 12.3 LTS is explicitly designed for production use. The LTS designation means the codebase is stable and won’t change in breaking ways during its support window. It includes a production-ready binary log re-engineering for write performance, expanded observability tools via Performance Schema and Galera audit logging, and seamless upgrade paths from both 11.4 LTS and 12.2 Rolling — making it appropriate for teams starting a new project or consolidating from a previous version. ![]()