Log files are used to capture exception/error tracebacks and debug tracing messages. In the first case, log entries are generally infrequent, marking exceptional events. However, you can enable more verbose logging levels for troubleshooting purposes. (Full tracebacks may not be available when you run some JIT compiler implementations.)

Starting in Windchill 9.0, Apache log4j is now being used as the primary mechanism for managing and issuing log messages. Some legacy logging has been modified to make use of log4j, but a large amount of previously existing Windchill logging capabilities remain as they were in previous releases and are still managed by Windchill property files configuration settings. In the 10.0 release, additional legacy Windchill logging capabilities have been migrated to log4j.

Logging does have a performance impact, so the verbose mode should be turned off if you are not debugging.

Each server application (server manager and method server) has a separate log. Servlet and JSP logging is captured in method server log files.

For additional information, see Managing Windchill Logging.