Check with this configuration.

<appender name="FILE" class="org.jboss.logging.appender.DailyRollingFileAppender">

      <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>

      <param name="File" value="${jboss.server.log.dir}/server.log"/>

      <param name="Append" value="false"/>

      <param name="Threshold" value="${jboss.server.log.threshold}"/>

            <!-- Rollover at midnight each day -->

      <param name="DatePattern" value="'.'yyyy-MM-dd"/>

            <!-- Rollover at the top of each hour

      <param name="DatePattern" value="'.'yyyy-MM-dd-HH"/>

      -->

      <layout class="org.apache.log4j.PatternLayout">

         <!-- The default pattern: Date Priority [Category] (Thread) Message\n -->

         <param name="ConversionPattern" value="%d %-5p [%c] (%t) %m%n"/>

                     <!-- The full pattern: Date MS Priority [Category] (Thread:NDC) Message\n

         <param name="ConversionPattern" value="%d %-5r %-5p [%c] (%t:%x) %m%n"/>

          -->

      </layout>

   </appender>