In addition to writing messages to log files, a WebLogic Server instance can print a subset of its messages to standard out. Usually, standard out is the shell (command prompt) in which you are running the server instance. However, some operating systems enable you to redirect standard out to some other location.
For each server instance that it controls, the Node Manager maintains
a log file that contains stdout and stderr messages generated by the
server instance. The Node Manager creates the server output log for a
server instance in the server instance's
directory, with the name, SERVER_NAME.out, where
SERVER_NAME is the name of the server instance. This file is
more information, see View Remote Start
Output and Administering Node Manager for Oracle WebLogic
For information about message severity, see Message Severity.
For more information, see Create log filters.