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Aikesheng Open Source Community
Aikesheng Open Source Community
Sep 4, 2023 · Databases

Observability of MySQL 8 Replication Using Performance Schema and Sys Schema Views

The article explains how MySQL 8 enhances replication observability by exposing detailed metrics through Performance Schema tables and sys schema views, providing DBAs with richer information such as per‑channel lag, worker thread states, and full replication status beyond the traditional SHOW REPLICA STATUS output.

InnoDB ClusterObservabilityPerformance Schema
0 likes · 14 min read
Observability of MySQL 8 Replication Using Performance Schema and Sys Schema Views
Aikesheng Open Source Community
Aikesheng Open Source Community
Nov 12, 2020 · Databases

MySQL sys Schema ERROR 1356 Bug When Using mysqldump --all-databases and How to Fix It

The article investigates the MySQL 5.7 sys schema ERROR 1356 caused by mysqldump --all-databases dropping mysql.proc, explains why the bug occurs, cites official documentation and bug reports, and provides four practical solutions including mysql_upgrade, separate sys backups, using --databases, and rebuilding from mysql‑sys.

Database BackupERROR 1356bug
0 likes · 12 min read
MySQL sys Schema ERROR 1356 Bug When Using mysqldump --all-databases and How to Fix It
dbaplus Community
dbaplus Community
Dec 29, 2016 · Databases

Unlocking MySQL sys Schema: A DBA’s Guide to Views, Performance, and Oracle‑like Insights

This article explains the origins, structure, and practical uses of MySQL's sys schema—including its view hierarchy, comparisons with Oracle data dictionary, performance‑monitoring capabilities, and step‑by‑step examples for troubleshooting locks, analyzing schema statistics, and backing up or rebuilding the sys database.

DBAOracleViews
0 likes · 13 min read
Unlocking MySQL sys Schema: A DBA’s Guide to Views, Performance, and Oracle‑like Insights