log4j:ERROR Failed to rename [log/saida.log] to [log/saida.log.2013-08-27-14]

Pessoal, estou com o seguinte problema… possuo uma aplicação rodando no WLS 12c e esta app nao esta rotacionando o arquivo qndo reinicia o servidor o muda de data.
Segue o meu arquivo log4j.xml:

<log4j:configuration xmlns:log4j=“http://jakarta.apache.org/log4j/”>

&lt;appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender"&gt;
	&lt;layout class="org.apache.log4j.PatternLayout"&gt;
		&lt;param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss}|[%t]|[%-5p]|%c|%m%n" /&gt;
	&lt;/layout&gt;
&lt;/appender&gt;

&lt;appender name="FileAppender" class="org.apache.log4j.DailyRollingFileAppender"&gt;
	&lt;param name="File" value="log/saida.log" /&gt;
	&lt;param name="DatePattern" value="'.'yyyy-MM-dd-HH" /&gt;
	&lt;layout class="org.apache.log4j.PatternLayout"&gt;
		&lt;param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss}|[%t]|[%-5p]|[%c] |%m%n" /&gt;
	&lt;/layout&gt;
	&lt;filter class="org.apache.log4j.varia.LevelRangeFilter"&gt;
    	&lt;param name="levelMin" value="DEBUG" /&gt;
    	&lt;param name="levelMax" value="FATAL" /&gt;
  	&lt;/filter&gt;
&lt;/appender&gt;

 &lt;root&gt;
	&lt;priority value="DEBUG" /&gt;
	&lt;appender-ref ref="ConsoleAppender" /&gt;
	&lt;appender-ref ref="FileAppender" /&gt;
&lt;/root&gt;

</log4j:configuration>