How to use mysql global lock

This article mainly introduces "how to use mysql global locks". In daily operation, I believe many people have doubts about how to use mysql global locks. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use mysql global locks". Next, please follow the editor to study!

1. Global lock locks the whole database. When locked, the entire instance will be read-only.

2. The subsequent MDL writing sentence, DDL sentence and updated transaction commit sentence will be blocked. Its typical usage scenario is to make a logical backup of the whole library.

Lock all tables to get a consistent view and ensure the integrity of the data.

Example

# Global lock, abbreviated as FTWRLFLUSH TABLES WITH READ LOCK; # unlock command UNLOCK TABLES;, this is the end of the study on "how to use mysql global lock". I hope you can solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!