The uipress activity log is capable of tracking most actions that happen on your site. While this has many benefits, if you have a very active site with a lot of users then it can quickly create a lot of entries inside your database.
For better site performance and database management we recommend setting up the remote database for the activity log. This can be done from the uipress site settings under the activity tab.

Once enabled, you can enter your mySQL database details and then test the connection to ensure everything is working as expected.
For the host option, you will need to place the port for your database at the end of the path to the db like this:
path/to/your/database:port
Once setup, uipress will then save all activity entries in this database.