The Aikesheng Open Source Community provides stable, enterprise‑grade MySQL open‑source tools and services, releases a premium open‑source component each year (1024), and continuously operates and maintains them.
This article analyzes a puzzling case where data consistency checks between a MySQL source and an OceanBase target report matching results despite visible record differences, explains the OMS ordinary and Inmode validation modes, and outlines scenarios that trigger Inmode verification.
This article walks through the background, reproduction steps, investigation methods, and concrete solution for MySQL metadata lock (MDL) issues that cause DDL statements to hang, and provides practical tips to prevent similar lock problems in production environments.
This article presents a detailed design, implementation, and automated testing script that evaluates whether MySQL Group Replication can support dual‑data‑center active‑active deployments, covering deployment steps, replication modes, fault simulation, data consistency checks, and key conclusions.
The article walks through five iterative experiments using MySQL HeatWave AutoML on a golf league dataset, showing how data quality, feature selection, and over‑fitting affect predictive accuracy and emphasizing that high‑quality data is essential for reliable AI models.
This article explains how to use Flame Graphs to visualize MySQL execution plans, discusses the limitations of traditional EXPLAIN output, introduces the EXPLAIN ANALYZE feature in MySQL 8.0, provides sample SQL and command‑line usage, and shows how the visual tool helps quickly identify performance bottlenecks.
This article explains the MySQL MY-013129 error, its lack of a fixed message, the code paths that generate it in MySQL 8.0, why it is logged as an ERROR, and practical recommendations for filtering or handling the log entries.
This article explains the differences between manual statistics collection methods in OceanBase 3.x and 4.x, compares DBMS_STATS and ANALYZE commands across MySQL and Oracle modes, provides version‑specific tables, detailed code examples for table, partition, and schema level collection, and shows how to verify statistics.
This article explains how to troubleshoot and resolve the MySQL "Too many connections" error by using GDB to modify the max_connections parameter on a running MySQL 5.7 instance without restarting, including step‑by‑step commands, sysbench load testing, and two practical methods.
This article presents a step‑by‑step migration plan for moving a PolarDB PostgreSQL 11.9 tenant to an OceanBase 4.2.1.10 Oracle‑compatible tenant, covering background, scope, task distribution, user and permission conversion, table‑structure transformation, DataX data transfer, performance tuning, error handling, monitoring, and final recommendations.
This article explains how to build a MySQL configuration comparison script by retrieving runtime variable values, parsing my.cnf and mysqld-auto.cnf files, handling formatting and case issues, and accurately comparing values while addressing typical challenges such as unit conversion, boolean representation, and legacy variable names.
