MySQL Enterprise, the paid commercial subscription, is the only comprehensive offering of production support, monitoring tools and MySQL database software to deliver optimal performance, reliability, security, and uptime. MySQL Enterprise includes:
MySQL Enterprise Server - the most reliable, secure and up-to-date version for cost-effectively delivering production database applications.
MySQL Enterprise Monitor - provides a "Virtual DBA" that monitors production database applications and minimizes security vulnerabilities, improves replication, and optimizes performance. In addition, the MySQL Query Analyzer gives you further insight into performance bottlenecks to identify and fix problem queries even before production.
MySQL Production Support - enables you to maximize the availability of your database applications. Plus, with Consultative Support, provides practical advice on how to optimize your configuration, replication set-up, schema, and queries for better performance.