Non-distributed mode
In non-distributed mode, each report starts a new Java Virtual Machine (JVM).
Non-distributed mode is the default, so you do not need any additional setup.
Set up logging
If the GREDEBUG environment variable is set, the debug details are written to standard error by default. You can redirect the log messages to a log file.
Important:
Sensitive and personal data may be written to the output. Make sure that the log output is written to files that can only be read by application administrators.