Tomcat 5.5 fails to load my webapp

[Jochus]

When I do:

jochus@Jochus:~$ sudo sh /usr/local/tomcat/bin/startup.sh
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/lib/j2sdk1.5-sun/

My webapp doesn't load ...

The catalina log says:

2-aug-2006 9:13:29 org.apache.coyote.http11.Http11BaseProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
2-aug-2006 9:13:30 org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
2-aug-2006 9:13:30 org.apache.catalina.startup.HostConfig undeployApps
WARNING: Error while removing context [/webapp9]
java.lang.NullPointerException
at org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:883)
at org.apache.catalina.startup.HostConfig.undeployApps(HostConfig.java:1164)
at org.apache.catalina.startup.HostConfig.stop(HostConfig.java:1135)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:312)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1054)
at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1066)
at org.apache.catalina.core.StandardEngine.stop(StandardEngine.java:447)
at org.apache.catalina.core.StandardService.stop(StandardService.java:512)
at org.apache.catalina.core.StandardServer.stop(StandardServer.java:743)
at org.apache.catalina.startup.Catalina.stop(Catalina.java:601)
at org.apache.catalina.startup.Catalina.start(Catalina.java:576)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
2-aug-2006 9:13:30 org.apache.coyote.http11.Http11BaseProtocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
2-aug-2006 9:13:30 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: Failed shutdown of Apache Portable Runtime
2-aug-2006 9:13:33 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/lib/j2sdk1.5-sun/jre/lib/i386/client:/usr/lib/j2sdk1.5-sun/jre/lib/i386:/usr/lib/j2sdk1.5-sun/jre/../lib/i386
2-aug-2006 9:13:33 org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
2-aug-2006 9:13:33 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 778 ms
2-aug-2006 9:13:33 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
2-aug-2006 9:13:33 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.17
2-aug-2006 9:13:33 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
2-aug-2006 9:13:34 org.apache.catalina.startup.HostConfig deployDirectory
SEVERE: Error deploying web application directory webapp9
java.lang.NullPointerException
at org.apache.catalina.realm.JDBCRealm.open(JDBCRealm.java:700)
at org.apache.catalina.realm.JDBCRealm.start(JDBCRealm.java:766)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4097)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:904)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:867)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
2-aug-2006 9:13:34 org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
2-aug-2006 9:13:34 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
2-aug-2006 9:13:34 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=1/20 config=null
2-aug-2006 9:13:34 org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
2-aug-2006 9:13:34 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1605 ms


There must be a problem with my JDBCRealm. I configured it in META-INF/context.xml

==>

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/alumni">
<Realm className="org.apache.catalina.realm.JDBCRealm" connectionName="gast@localhost" connectionPassword="***" connectionURL="jdbc:mysql:alumni" debug="99" driverName="org.gjt.mm.mysql.Driver" roleNameCol="rol" userCredCol="wachtwoord" userNameCol="email" userRoleTable="oudstudenten_rol" userTable="oudstudenten"/>
</Context>


Can sombody help me out?