ASP.NET - Issue in logging (Log4Net)

In my application, there is 4 layer
UI
Service
Business
Data Access

Now I am using Log4Net open source for logging the exception. Actually what happened,

when exception occurs on Data access layer is logged then throw the inner exception to business layer. On business layer, it has own inner exception and inner exception of Data access layer. So there is duplication of logging here 2 times logging of exception , first time on data access layer then on business layer. What should i do to stop the double logging of exception

 

Plz help me out. its urgent

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You are probably getting duplicate log messages because your configuration is telling Log4Net to log twice.

here's a sample config that does not do this:

<root>
    <level value="WARN" />
    <appender-ref ref="Console" />
    <appender-ref ref="LogFile" />
</root>
<logger name="myprogram">
    <level value="INFO" />
</logger>

My Config file is:

<root>
            <level value="track" />
            <!-- <appender-ref ref="RollingFile" /> -->
            <!-- <appender-ref ref="RollingFileTrack" /> -->
            <!-- <appender-ref ref="RollingFileError" /> -->
            <appender-ref ref="PegasusRollingFile" />
            <appender-ref ref="PegasusRollingFileTrack" />
            <appender-ref ref="PegasusRollingFileError" />
            <!-- <appender-ref ref="ADONetTrack" /> -->
            <!-- <appender-ref ref="ADONetError" /> -->
            <!-- <appender-ref ref="SMTPMail" /> -->
        </root>
        <logger name="Pegasus.Web">
            <level value="track" />
        </logger>
        <logger name="Pegasus.DataAccessLayer">
            <level value="info" />
        </logger>
        <logger name="Pegasus.DataAccessLayer.Common.SqlHelper">
            <level value="info" />
        </logger>
        <logger name="Pegasus.ServiceLayer">
            <level value="info" />
        </logger>
        <logger name="Pegasus.AssetServiceLayer">
            <level value="info" />
        </logger>
        <logger name="Pegasus.Cache.Core.CacheProviderFactory">
            <level value="info" />
        </logger>
        <logger name="Pegasus.Integration.Lms.LifRequestHandler">
            <level value="info" />
        </logger>
        <logger name="Pegasus.Integration.Lms.ProntoRequestHandler">
            <level value="debug" />
        </logger>
        <logger name="Pegasus.Integration.Tpi.Service">
            <level value="info" />
        </logger>
        <logger name="Pegasus.Integration.Rumba.Product.MessageInspectorDurationClient">
            <level value="debug" />
        </logger>
        <logger name="Pegasus.Integration.Rumba.IdentityV2">
            <level value="debug" />
        </logger>
        <logger name="Pegasus.Integration.Rumba.Identity">
            <level value="debug" />
        </logger>
        <logger name="Pegasus.Integration.Rumba.Product">
            <level value="debug" />
        </logger>
        <logger name="Pegasus.Integration.Rumba.ServiceFacade">
            <level value="debug" />
        </logger>
    <logger name="Pegasus.Integration.Common.MessageInspectorDurationCS">
    <level value="info" />
    </logger>
    <logger name="Pegasus.SystemFrameworks.PegasusStopWatch">
    <level value="info" />
    </logger>
    <logger name="Pegasus.ServiceLayer.PegasusSecurity.PegasusRequestPrincipal">
    <level value="debug" />
    </logger>
So now plz tell me what should I do to avoid duplication in logging