How to exclusive lock mysql database?

Question

I have multiple mysql databases and I want to perform some administration tasks on a particular database. How do I ensure that no one else can connect to that database while

Answer 1

Apparently, you can use the FLUSH command for this as such:

> FLUSH TABLES WITH READ LOCK;

and then

> UNLOCK TABLES;

to unlock the database again. Unsure if some setting needs to be set on the tables to allow a readlock. You can test this by trying to do a manual insert after the database is locked and if you get an error message about the table being locked, you know it worked.

More information on FLUSH command