You may have noticed that InfoPath browser forms are slow to load first thing in the morning. If you have a form that submits to DBXL, that first submit may take 15 seconds, 20 seconds, 30 seconds and in some servers it may even time out! However, after that first submit, the issue disappears.
To resolve this, you can set up a “wake up” script that executes at scheduled intervals or early in the morning, before your users are typically online. This can help ensure users don’t encounter this issue.
This document explains the steps necessary to set up this script.