I'm using a centOS 5.2 and I have installed an Apache Tomcat 6.0.18 on it. As I entered the url http://localhost:8080 I get the message that Tomcat has been successfully installed, but as I check the log catalina.out I'm getting the next errors:

WARNING: error instantiating 'org.apache.juli.ClassLoaderLogManager' referenced by java.util.
logging.manager, class not found
java.lang.ClassNotFoundException: org.apache.juli.ClassLoaderLogManager not found
<<No stacktrace available>>
WARNING: error instantiating '1catalina.org.apache.juli.FileHandler,' referenced by handlers,
class not found
java.lang.ClassNotFoundException: 1catalina.org.apache.juli.FileHandler,
<<No stacktrace available>>
Exception during runtime initialization
java.lang.ExceptionInInitializerError
<<No stacktrace available>>
Caused by: java.lang.NullPointerException
<<No stacktrace available>>
19-sep-2008 12:18:26 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in producti
on environments was not found on the java.library.path: /usr/java/jdk1.6.0_10/jre/lib/i386/se
rver:/usr/java/jdk1.6.0_10/jre/lib/i386:/usr/java/jdk1.6.0_10/jre/../lib/i386:/usr/java/packa
ges/lib/i386:/lib:/usr/lib

What do they mean and how can I fix'em?

Thanks

You need to include servlet-api.jar and jsp-api.jar in your java path that's specified above (or at least make sure they're there). I remember seeing this in the past, but not sure if this applies now.

From what I remember, there was a problem with my Java installation. Either I had an older version, or there were two versions found in the path, etc. Hope this helps.

Both files (server-api.jar and jsp-api.jar) are in the next path:

/usr/apache-tomcat-6.0.18/lib/servlet-api.jar
/usr/apache-tomcat-6.0.18/lib/jsp-api.jar

Should I move them to another location?

Thanks, I finally get to install apache tomcat successfully.

What did you do to get it working? I am having the same problem.