RE: File Access Error with RollingFileAppender

[Gareth Mc Leigh]

I had a similar problem with "because it is being used by another process".
Probably got nothing to do with yours but I was using the wrong 
debug/release reference file.

From: "Stewart, Mark (GE Consumer Finance, consultant)" 
<[EMAIL PROTECTED]>
Reply-To: "Log4NET User" <log4net-user@logging.apache.org>
To: <log4net-user@logging.apache.org>
Subject: File Access Error with RollingFileAppender
Date: Fri, 3 Jun 2005 09:55:16 -0400


I am having problems with the log4net in a small test project (Using VS.NET 
2003, and log4net (1.2.0 Beta 8)).  It works fine when I use the 
ConsoleAppender, but fails to log some messages with the 
RollingFileAppender.

I have a simple log4net test solution with a primary project and a library 
project with a simple class and log method.
Both projects call log4net.Config.DOMConfigurator.Configure() on startup, 
and set the class-level variables:

  private static readonly log4net.ILog log = 
log4net.LogManager.GetLogger(typeof(TestClass));
  private static readonly bool isDebugEnabled = log.IsDebugEnabled;
  private static readonly bool isInfoEnabled = log.IsInfoEnabled;

The primary project logs fine, but the library class instance fails to log 
to the file when instantiated and called,
and I get the following trace output:

log4net: FileAppender: Opening file for writing 
[C:\Myfiles\MyProjects\Log4NetTest\LogTest.log] append [True]
log4net:ERROR RollingFileAppenderOpenFile(,True) call failed.
System.IO.IOException: The process cannot access the file 
"C:\Myfiles\MyProjects\Log4NetTest\LogTest.log" because it is being used by 
another process.

When I debug through the code, I find that the writer for the failing class 
instance is "not defined".

Here is my config file...

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
        <!-- Register the section handler for the log4net section -->
        <configSections>
		<section name="log4net" 
type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
        </configSections>


        <log4net debug="true">

		<appender name="RollingLogger" 
type="log4net.Appender.RollingFileAppender,log4net">
			<param name="File" 
value="C:\\Myfiles\\MyProjects\\Log4NetTest\\LogTest.log" />
                        <param name="AppendToFile" value="true" />

                        <param name="MaxSizeRollBackups" value="10" />
                        <param name="MaximumFileSize" value="100KB" />
                        <param name="RollingStyle" value="Composite" />
                        <param name="DatePattern" value="yyyyMMdd" />
                        <param name="StaticLogFileName" value="true" />

                        <lockingModel 
type="log4net.Appender.FileAppender+MinimalLock" />

                        <layout type="log4net.Layout.PatternLayout,log4net">
                                <param name="ConversionPattern" value="%d [%t] %-5p %c 
[%x] - %m%n" />
                        </layout>
                </appender>

                <appender name="DefaultLogger" 
type="log4net.Appender.ConsoleAppender" >
                        <layout type="log4net.Layout.PatternLayout">
                                <param name="ConversionPattern" value="%d [%t] %-5p %c 
[%x] - %m%n" />
                        </layout>
                </appender>

                <root>
                    <level value="DEBUG" />
                    <appender-ref ref="RollingLogger" />
                </root>



        </log4net>


</configuration>

I tried adding, then removing the <lockingModelsubkey for the appender, 
with no change.
As I said, the logging works fine with the ConsoleAppender, but not the 
file.
Is this a known problem, or I am I doing something wrong?


Thanks,

Mark Stewart
[EMAIL PROTECTED]