Why does Query Analyzer not display any queries for the monitored instance?

MySQL / MariaDB

For General Log & Slow Query Log, Navicat Monitor uses queries to get the log information. You need to enable the general log and slow query log and set log_output to TABLE. Please run the following SQLs

SET GLOBAL general_log = 1;
SET GLOBAL slow_query_log = 1;
SET GLOBAL log_output = 'TABLE';

To enable Performance Schema, you need to start the server with the performance_schema variable set to an appropriate value. For example, use these lines in your my.cnf file:

[mysqld]
performance_schema=ON