Diagnostic logs record internal events of the application and outputs human-readable logs. This makes it ideal for debugging 4D applications that crash.

Here are some steps to configure this log on your 4D Server:

- In the database method "On Server Startup" and "On Startup" add the following line:

SET DATABASE PARAMETER(Diagnostic log recording; 1)

- Define the diagnostic log level:

SET DATABASE PARAMETER(Diagnostic log level; Log trace)

To stop the log recording, execute a project method with "Execute on Server" property enabled, containing the following line:

SET DATABASE PARAMETER(Diagnostic log recording; 0)