log files get reset at 12:00 noon every day

[Simon Wallis]

Hi,

This is totally weird. Every day at 12:00 noon the log files from our 
application get reset. If I check them in the morning, there are entries 
starting in the night, there's entries throughout the morning, and then exactly 
at noon log4net seems to delete the file and recreate it, so all the entries 
from midnight until noon are deleted.

This is only happening in our recently deployed QA and production environments. 
It works fine locally. I'm also logging to a database and that is fine. I made 
sure that the Regional date settings (in control panel) are the same, I just 
have no idea why this is happening. It is quite bizarre.

Here is the snipped from my log4net config file:

        <!-- ERROR LOG - text file that rolls on a daily basis -->
        <appender name="ErrorRollingFileAppender" 
type="log4net.Appender.RollingFileAppender">
                <filter type="log4net.Filter.LevelRangeFilter">
                        <levelMin value="WARN" />
                        <levelMax value="FATAL" />
                </filter>
                <rollingStyle value="Date" />
                <datePattern value=".yyyyMMdd.&quot;log&quot;" />
                <file value="D:\\myfolder\\Logging\\hidc2\\WS.error" />
                <appendToFile value="true" />
                <param name="StaticLogFileName" value="false" />
                <layout type="log4net.Layout.PatternLayout">
                        <conversionPattern value="%d %-7p %c  &quot;%m&quot; 
%P{SessionId} %P{ProfileId} %P{XmlData} %n" />
                </layout>
        </appender>

Is anything wrong with it?

Thanks for your help,
Simon.