EDIT

<?xml version="1.0" encoding="UTF-8"?>

<Configuration>

  <Appenders>

    <File name="FILE" fileName="cdmlib-commons.log" append="true" header="%d{dd MMM yyyy}">

      <PatternLayout pattern="%d{ABSOLUTE} %5p %c{1}:%L - %m%n"/>

    </File>

    <Console name="STDOUT" target="SYSTEM_OUT">

      <PatternLayout pattern="%d{ABSOLUTE} %5p %c{1}:%L - %m%n"/>

    </Console>

  </Appenders>

  <Loggers>

    <Root level="warn">

     <!-- <AppenderRef ref="STDOUT"/>  -->

      <AppenderRef ref="FILE"/>

    </Root>

    <Logger name="org.hibernate.orm.deprecation" level="error" additivity="false">

      <AppenderRef ref="FILE"/>

    </Logger>

  </Loggers>

</Configuration>