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.
ERROR 1356bugdatabase backup
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