System probes have been deprecated since ColdFusion 2016. We recommend avoiding their use.

Our recommendation is not to use the built-in ColdFusion probes. We suggest is creating a simple ColdFusion heartbeat template containing a very light database query. Locate this file in a directory outside of any main web application roots to avoid invoking any of your main application code.

Here is a simple example:

<cfquery name="heartbeat" datasource="DSN">
Select probe from masterDB where active = 1
<cfcatch type="database">
<!--- Capture errors here --->

Here are the default settings for System Probes.

ColdFusion Probes