The Application Server uses the Java 2 platform Logging API specified in JSR 047. Application Server logging messages are recorded in the server log, normally found at domain-dir/logs/server.log.
The domain-dir/logs directory contains two other kinds of logs in addition to the server log. In the access subdirectory are the HTTP Service access logs, and in the tx subdirectory are the Transaction Service logs. For information about these logs, consult the Admin Console online help and Configuring Transactions. The components of the Application Server generate logging output. Application components can also generate logging output.
Application components may use the Apache Commons Logging Library to log messages. The platform standard JSR 047 API, however, is recommended for better log configuration.