RE: log4j:ERROR Failed to rename [../logs/performance.log] to [../logs/performance.log.2004-05-04].

[Ceki Gülcü <ce...@qos.ch>]

At 10:35 AM 5/21/2004, Allistair Crossley wrote:
>We have a test and a production server. They are configured identically. 
>The test server does not experience this log4j:ERROR Failed to rename 
>[../logs/iq2/rar.log] to [../logs/iq2/rar.log.2004-05-20]. problem. Nor do 
>we ever call LogManager.shutdown and have never needed to....needless to 
>say the test tomcat is restarted quite a lot.


Shutting down/restarting Tomcat was not what I meant. Are you hot
re-deploying your web-application on the production server? Are you
performing any operations on one machine but not the other?

In the case of hot-redeploy, it is possible for the old version of
your application to remain in memory, so that it will continue to hold
a lock on the log file.

You can avoid this by calling LogManager.shutdown() when your
application is closed/recycled. See
javax.servlet.ServletContextListener for more information on
web-appplication lifecycle.

Writing and deploying your own ServletContextListener should be
easy. It is likely to help and is generally considered to be good
practice.

>Last night I stopped the production server, redeployed the web application 
>and killed all Java processes. Yet still this problem occurs. I even 
>created  a new directory into which the log files are stored and set 
>permissions on that folder to be fully writeable.\

If I understand correctly, the problem occurs on the first roll over? You 
can accelerate the pace of rollover to be as fast as 1 minute. Use 
DatePattern=".yyyy-MM-dd-HH-mm"

>I have used the handle tools to determine nothing other than multiple 
>entries to the log files seem to be present in the tomcat process.

You are saying that it is well a lock issue. Correct?

>I don't think this is an IS problem personally but I also cannot think why 
>this reoccurs even after killing all Java processes.

What is "IS"?

>Regards

-- 
Ceki Gülcü

      For log4j documentation consider "The complete log4j manual"
      ISBN: 2970036908 http://www.qos.ch/shop/products/clm_t.jsp  



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