OceanBase Database Community Edition v4.4.1, released on October 24, 2025, introduces significant upgrades including AI function services, vector search enhancements, and substantial performance optimizations. The release notes explicitly state that this version only supports new cluster installations and does not support upgrades from previous versions.
OceanBase V4.5.0 CE introduces significant AI enhancements, including optimized IVF/IVF_PQ vector indexes, experimental memory-based sparse vector search, and transparent semantic indexing. The release also defaults Index Skip Scan on and improves JSON multi-value index performance.
OceanBase released version 4.3.5 CE BP3 HF2 on December 8, 2025. This hotfix addresses critical stability issues in partitioning, SQL execution, and vector index management, alongside performance optimizations for JSON processing and ARM architectures.
OceanBase released version 4.4.1_CE_HF2 on December 24, 2025, focusing on stabilizing vector search operations, improving hybrid search accuracy, and fixing critical memory management issues in follower nodes.
OceanBase has released version 4.3.5_CE_BP5_HF2, addressing critical stability issues in vector indexing, LOB handling, and CDC processes, while introducing control over vector index rebuild parallelism.
OceanBase has released version 4.4.2_CE, a Long Term Support (LTS) build designed for hybrid transactional/analytical processing (HTAP). The update introduces heterogeneous zone support, significant OBCDC enhancements for virtual columns and table recovery, and performance optimizations for serial table creation and PDML on large-scale CPUs.
OceanBase v4.6.0 introduces native SQL hybrid search for AI workloads, enhanced vector indexing, and smarter HTAP column store routing.
