Hi @smehsan, there are a few things that you need to do:

1. Shut down Tomcat
2. Install the MySQL DB driver
3. Configure your Tomcat to connect to your MySQL
4. Start Tomcat

I recommend checking this article here on how to do that, just skip step 4:

https://confluence.atlassian.com/conf59/configuring-a-mysql-datasource-in-apache-tomcat-792499579.html