Aikesheng Open Source Community
Dec 10, 2025 · Databases
Why OceanBase DDL Expansion Can Crash Your Service and How to Fix It
A production migration from Oracle to OceanBase caused a column‑length change to trigger offline DDL, leading to connection errors, INSERT latency spikes, and complete table blockage; the article reproduces the fault, analyzes the OMS conversion and OceanBase DDL rules, and provides a two‑step remediation and a method to verify online DDL execution.
DDLDatabase MigrationOceanBase
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