# Configuring diagnostic, method trace and transaction tracking
You can use environment variables to enable/disable method trace and transaction tracking capabilities.  
## Diagnostic
By default, diagnostic is disabled. To enable it, set the `KNJ_ENABLE_DEEPDIVE` variable to `True`.
## Method trace
By default, method trace is disabled. To enable it, set the `KNJ_ENABLE_METHODTRACE` variable to `True`.  
## Transaction tracking
By default, transaction tracking is disabled. To enable it, set the `KNJ_ENABLE_TT` variable to `True`.  


**Parent topic:** [Node.js Data Collector for IBM Application Performance Management (APM)](../README.md)