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From William Claxton <>
Subject Re: Apache Portable Runtime not found on the java.library.path, resolved
Date Wed, 21 Dec 2005 04:11:30 GMT
At 02:46 AM 12/21/2005, Adam Constabaris wrote:
>FTP wrote:
>>I face the same problem with:
>>Tomcat 5.5.12
>>jdk: 1.5.06
>>and cannot find the library you suggest in order to include it!
>APR integration isn't yet fully part of the Tomcat distribution, as 
>far as I can tell (I think it's misleading of them to enable the APR 
>listener on startup, because it makes you think you're supposed to use it).
>I'm not sure how stable the Tomcat developers consider the APR 
>integration, so if you're at all concerned about that, it's probably 
>easier to just comment out the Listener instead.
>If you want to use the APR libraries, first read 
> to see if there are 
>precompiled binaries for your platform (Windows only, AFAICT).  If not,
>(a) install APR (; if you use Linux, your 
>distribution may ship the APR in a package.
>(b) compile by unpacking 
>$TOMCAT_HOME/bin/tomcat-native.tar.gz and following (most of) the 
>instructions there; NOTE if you don't need openSSL support, be 
>warned that --without-ssl switch did not work for me with 
>tomcat-native-1.1.0 (ships with 5.5.12; 1.1.1 with 5.5.14-beta did 
>honor that switch).

Thank you all.  I was able to recreate and resolve the problem on 
another machine (not the production server).  Here's the procedure I followed.

1. Clean install of JRE 1.4.2_03. This is intentionally an older 
version to recreate environment on the production machine.

2. Clean install of Tomcat 5.5.14.
During installation, initially encountered the error: "Failed to 
install Tomcat 5 service. Check your settings and permissions".  This 
was due to fact that, after uninstalling previous version of Tomcat, 
the Windows service was marked for deletion but not removed.  I ran 
the INSTSRV utility to remove the service, but it 
failed.  Apparently, this issue was encountered only because the 
Windows Services manager was open on the desktop.  After closing and 
reopening, the service was gone, and Tomcat could install normally.

3. Starting Tomcat encounter the JVM error:
"This release of Apache Tomcat was packaged to run on J2SE 5.0 or 
later. It can be run on earlier JVMs by downloading and installing a 
compatibility package from the Apache Tomcat binary download page."

4. Deployed the compatability patch (by copying the files into Tomcat 
'bin' and 'common' folders).

5. Restarting Tomcat encountered the APR error:
"The Apache Tomcat Native library which allows optimal performance in 
production environments was not found on the java.library.path".

6. Edited Tomcat 'server.xml' (in the 'conf' folder).  Removed the line:
   <Listener className="org.apache.catalina.core.AprLifecycleListener" />

7. Restarting Tomcat, everything works fine!

Regards, Bill Claxton (

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