Enforcing MySQL SELECT Timeout When max_execution_time Does Not Apply

This article explains the limitations of MySQL's max_execution_time for SELECT statements inside stored procedures and provides practical solutions—including external kill scripts and the Percona Toolkit's pt‑kill—to enforce query timeouts while warning against use in production environments.

MySQLPT-killStored Procedures

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Enforcing MySQL SELECT Timeout When max_execution_time Does Not Apply

dbaplus Community

Apr 17, 2022 · Databases

Why Killing Slow Queries Often Fails and a Safer MySQL Timeout Solution

The article examines how slow‑query‑induced avalanches arise in MySQL, explains why naïvely killing slow queries is fraught with accuracy, automation and responsibility issues, and proposes a signature‑based timeout mechanism that lets applications safely abort problematic queries.

DBADatabase PerformanceMySQL

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Why Killing Slow Queries Often Fails and a Safer MySQL Timeout Solution