opensim/bin/OpenSim.exe.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>
  <appSettings>
  </appSettings>
  <log4net>
    <appender name="Console" type="OpenSim.Framework.Console.OpenSimAppender, OpenSim.Framework.Console">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{HH:mm:ss} - %message%newline" />
      </layout>
    </appender>

    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <file value="OpenSim.log" />
      <appendToFile value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level - %logger %message%newline" />
      </layout>
    </appender>

    <!-- if you'd like to know what NHibernate is doing more set value="DEBUG" -->
    <logger name="NHibernate" additivity="false">
      <level value="INFO"/>
      <appender-ref ref="NHibernateFileLog"/>
    </logger>

    <root>
      <level value="DEBUG" />
      <appender-ref ref="Console" />
      <appender-ref ref="LogFileAppender" />
    </root>
  </log4net>
</configuration>