OceanBase 4.3.5 CE BP4 adds session‑level temporary tables, enhanced materialized‑view refresh, vector index improvements, and a host of configuration and syntax updates. This article outlines the key enhancements, upgrade prerequisites, and critical bug fixes.
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 released version 4.3.5_CE_BP5 on November 19, 2025. This release focuses on advanced vector search capabilities, significant materialized view enhancements, and performance improvements for Cartesian products and recursive CTEs.
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 v4.2.5_CE_BP7 on December 5, 2025, introducing optimized leader election for high availability, enhanced SQLSTAT metrics for performance tuning, and support for Alibaba Cloud OSS WORM retention policies in backups.
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 v4.4.1_CE_HF1 on December 10, 2025, addressing critical stability issues including a memory leak, RootService failover problems, and vector index accuracy. The patch also disables the rowkey TTL feature to improve query performance.
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 released version 4.2.5_CE_BP7_HF1 on March 6, 2026, addressing critical stability issues including memory access violations, PL execution slowdowns, and SQL hard-parse timeouts.
OceanBase 4.4.2_CE_BP1 introduces Zone-level TableGroups, vector search extensions, and experimental RPO=0 strong sync. This release also adds MySQL 8.0 dual password management and significant performance optimizations for PL/SQL and external tables.
