Debian usage of Tomcat Native Library ===================================== Enable Tomcat Native Library in Tomcat 6.x: - edit /etc/tomcat6/server.xml to check if AprLifecycleListener is activated [you should remove XML comments if present] - start or restart Tomcat by using /etc/init.d/tomcat6 restart Check library loading at Tomcat 6.x startup: - when starting, Tomcat will output the following log message to a file named like /var/log/tomcat6/catalina.*.log --- org.apache.catalina.core.AprLifecycleListener init INFO: Loaded APR based Apache Tomcat Native library 1.1.24. org.apache.catalina.core.AprLifecycleListener init INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. --- If you are using Tomcat 7.x or 8.x, follow the instructions above, replacing tomcat6 with tomcat7 or tomcat8.