There are two modes for identifying and diagnosing issues in PM Compass.
SQL Logging: This mode is verbose logging that captures every query and the time it takes to execute the query. This logging is helpful when determining performance issues. This logging should only be enabled when determining performance issues.
SQL Exceptions: This mode provides details when an error occurs. It is recommended that this be enabled in a development environment when you are testing new releases. If the error occurs, it will be logged, and you will not have to spend time recreating the error.