Error Message :
The Automation Engine kicks off a forced trace, which runs for hours/days and creates trace files of several gigabytes in size.
Root Cause: The work process, which is responsible for the tracing gets stuck in file tracing mode.
Update to a fix version listed below or a newer version if available.
Fix Status: In Progress
Automation Engine 12.2.0 - Planned release date: 2018-06-19
Automation Engine 12.1.1 - Available
Automation Engine 12.0.4 - Available