You probably meant : <rollingPolicy> instead of <rollingPolisy> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <MaxHistory>5</MaxHistory> </rollingPolicy> Or if desired max history only for the archive configuration: <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <TimeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <MaxFileSize>${sizeThreshold}</MaxFileSize> <MaxHistory>5</MaxHistory> </TimeBasedFileNamingAndTriggeringPolicy> </rollingPolicy> That the way I understood the documentation _____ De : logback-user-bounces@qos.ch [mailto:logback-user-bounces@qos.ch] De la part de Ayman Hammoudeh Envoyé : jeudi 1 octobre 2009 15:12 À : logback-user@qos.ch Objet : [logback-user] urgent explination issue Hello, I want to know how can I use max history in Size <http://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedFNATP> and time based archiving and where exactly to put the<MaxHistory> tag in the xml , I have tried to put it in the <RollingPolisy> tag but its not working. Any help would be appreciated. Best Regards, Ayman Hammoudeh