Unable to make tomcat log 404 type error messages.

[sun neel]

I need the log where tomcat puts 404 type errors.
I am using: tomcat 6 on Centos 5.2

I have been getting 404 errors in applications deployed on tomcat. I was unable to find the logs where tomcat puts messages when it is unable to find requested files and other simple errors.
- I am not talking about stuff logged by applications, just 404 type stuff.

I checked <tomcat>/logs and found following types of files
catalina.out : contains startup and shutdown messages (mostly INFO messages)
catalina.<year-mm-dd>.log : contains same data as above file for its date
host-manager.year-mm-dd.log : empty (Seems to be meant for tomcat manger, I have not been using that)
localhost.year-mm-dd.log : some application related log message (org.apache.catalina.core.ApplicationContext... INFO messages)
manager.year-mm-dd.log : empty

So, none of these contain the 404 errors. Since I installed tomcat by simply unpacking it in /usr/share I'm pretty sure it has no logs in /var/log (I checked and nothing for catlina or tomcat).
Any ideas?

Thanks

[sun neel]

I thought maybe the problem is not of finding the log but making tomcat log these errors. So I tried the following

I searched and found that a valve can be configured in <tomcat>/conf/server.xml for similar purposes but I only able to log incoming request.

<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>

This created the file <tomcat>/logs/localhost_access_log.txt which contains details of requests coming in e.g.

192.168.40.1 - - [23/Jul/2010:09:14:13 +0500] "GET /<my project url>/ HTTP/1.1" 404 994

Still I could not get the 404 file not found errors in log.

[sun neel]

I read about <tomcat>/conf/logging.properties
http://tomcat.apache.org/tomcat-6.0-doc/logging.html
It seems to be more relevant to logging done inside applications, still I set catalina logging to FINEST with:

1catalina.org.apache.juli.FileHandler.level = ALL

Can anyone tell me how to get tomcat to log its 404 error and where to find them.
I remember apache logs contain the requested url, path of local file searched for and not found and that a 404 has been sent - all in the same message. For starters I am most interested in the "path of local file searched for and not found" part.

[Misha Ver]

Why you do not like this line? It looks like 404 error for me

192.168.40.1 - - [23/Jul/2010:09:14:13 +0500] "GET /<my project url>/ HTTP/1.1" 404 994

[sun neel]

Misha the line contains the request url

e.g. "GET /<project url>/files/file1.html HTTP/1.1" 404 1084

I need the the path of file that was searched for and not found.

e.g. /usr/share...../files/file1.html