If you've ever wanted to know anything about the log files created by the ColdFusion Server, Mike Kruger can probably answer your question. His recent blog article covers the location and format of all the logs available in the ColdFusion Administrator, the JRun logs not available in the ColdFusion Administrator, and obscure Sequelink ODBC logs located somewhere else entirely. This is an important resource for resolving difficult ColdFusion server issues which may cause poor performance, or worse, system failure.
Finding All Those Sneaky Log Files in ColdFusion (ColdFusion Muse, June 23, 2005)