Andre,

André Warnier wrote on 14.12.2010 11:10:
Yes.

What about these ?

>    * Redirect Stdout: auto
>    * Redirect Stderr: auto

Do you know what that does ?
Why don't you try to set the "Redirect Stderr" to some file path on your server, and see what arrives in it ?

You could also try to look in the Windows Event Logs, in case anything happens there.
Go on, be imaginative. It's your PC after all.
thanx for your helpful answer. Believe me, before I post on a mailing list or forum I spent a long time trying to fix my problems. In this case I ran out of ideas, so I was hoping I would find some expertise on this mailing list...

I tried your suggestion and guess what, it didn't make any difference.

Thomas
Thomas Kloeber wrote:
André,

thanks for your suggestion. Yes, I run Tomcat as a service.
I tried your suggestion and it looks all normal/ok.

   * Level: Info
   * Log path: my tomcat installation directory/logs
   * Log prefix: jakarta_service_
   * Redirect Stdout: auto
   * Redirect Stderr: auto

I tried changing the loggin level to debug, but it doesn't make any difference.
Any other ideas?

Thomas

André Warnier wrote on 13.12.2010 16:56:
Thomas Kloeber wrote:
Folks'es,

I have a strange problem with my Tomcat-Servlets:

everything my servlets print out via System.err is lost and does not
   show up in any of the log files.
   How can that be and what can I do about it?

When I start Tomcat all the usual log files arecreated like stdout_XXXXXXXX.log, localhost_access_log, catalina.*.log, stder_XXXXXXXX.log, etc. However, stderr.*.log remains empty even if my servlets print stuff to System.err or dump stack traces. Only if I print to System.out the info appears in stdout_.*.log.

I'm using Apache Tomcat 6.0.26, Java 1.6.0_22-b04 on Windows 2003 x86.

Presumably, you are running Tomcat as a Windows Service.
If that is the case, navigate to the tomcat/bin directory, and double-click on the tomcat6w.exe program. Then in the dialog, select the "Logging" tab. This may explain what happens.
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