All your Campaign instance’s assets, workflows, and data are stored in the database. The database reaching its maximum capacity can lead to issues with your instance (inability to login, to send emails etc.). It is therefore essential to monitor you instances’ databases regularly to ensure optimal performance.
Learn how to monitor your instances’ database usage with the Control Panel with this detailed how-to guideline tutorial: Monitoring databases
Feel free to reach out for any questions and feedback through the below comment section.
Sukrity Wadhwa