MySQL: Shutdown a schema / database

 In MySQL, you cannot "shut down" a specific schema (database) as you would a server or service. However, you can restrict access to a schema or make it effectively inaccessible by taking certain actions. Here are some approaches:

1. Revoke User Privileges

You can revoke all privileges for specific users on the schema to prevent access.

REVOKE ALL PRIVILEGES ON schema_name.* FROM 'username'@'host';

Replace schema_name with the name of your schema, and username and host with the appropriate user and host.

2. Rename the Schema

Renaming the schema can make it temporarily inaccessible to applications or users relying on the original name.

RENAME DATABASE old_schema_name TO new_schema_name;

Note: This is supported in some MySQL versions but not all. Always back up your data before attempting this.

3. Lock Tables in the Schema

You can lock all tables in the schema to prevent modifications or queries.

USE schema_name;
FLUSH TABLES WITH READ LOCK;

This will make the schema read-only until the lock is released.

If you need further clarification or a more tailored solution, feel free to ask!