Where to begin? Tomcat is not unstable. If you have been editing
setclaspath.sh then you should probably start with a fresh tomcat install. You
don't have to edit that file and who knows what else has been changed. Go
download tomcat (don't use the Ubuntu version). Untar it. Don't copy your app
into it yet. cd into bin and do 'catalina.sh run' and see if tomcat starts up.
ctr-c to shut it down.
Where are you putting your DB2 driver?
Post your web.xml
Are you using a war file?
Why are you running tomcat as root?
________________________________________
From: Ariela Carrera [EMAIL PROTECTED]
Sent: Sunday, November 23, 2008 9:42 PM
To: Tomcat Users
Subject: Tomcat 6 unstable
Hi dear users of Tomcat.
I am writing to you because my webapp is not working fine. I am developing a
web application with Java, a Servlet and JSP some in Tomcat 6.0.14, using
Ubuntu Gutsy. I have developed a class that connects to DB2, which I tested
plenty of times, with a kind of test, for console. The kind of connection is
working properly.
THE PROBLEM:
Although it always starts well, charging that brings all the examples of jsp
and servlet correctly, TOMCAT feature when you want,
1) Loading or not my servlet,
2) Losing or no connections to DB2, and
3) Making nulls or not, values in the http-Sesions.
Without having made any changes in the source code, Tomcat sometimes do works
and sometimes do not.
SOLUTIONS I TRIED:
- I tried to start adding the-Xmx but I do not see differences. Tomcat also
remains unstable.
- I tried to create the folder CATALINAHOME/common/lib (version 6 brings no
folder) and there copying the jar needed. I continue as before.
- I tried editing the setclaspath.sh, since in the first few lines, what it
does is literally erasing the entire class that has ... Well, there was a
CLASSPATH = "" and it changed by a CLASSPATH = $ CLASSPATH, this way it is not
deleting the old value of the variable.
- I tried booting java as a server with the-server.
What else can I try? I accept any suggestion
DETAILS
What am I using?
JAVA VERSION: $ java-version
Java (TM) SE Runtime Environment (build 1.6.0_02-B05)
Java HotSpot (TM) Client VM (build 1.6.0_02-B05, mixed mode)
Javac VERSION: $ javac-version
javac 1.6.0_02
By starting TOMCAT: $ sudo /opt/apache-tomcat-6.0.14/bin/./startup.sh
Using CATALINA_BASE: /opt/apache-tomcat-6.0.14
Using CATALINA_HOME: /opt/apache-tomcat-6.0.14
Using CATALINA_TMPDIR: /opt/apache-tomcat-6.0.14/temp
Using JRE_HOME: /opt/java/jdk/jre
OUTPUT FOR PROBLEM 1)
java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
java.net.URLClassLoader.access$000(URLClassLoader.java:56)
java.net.URLClassLoader$1.run(URLClassLoader.java:195)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:188)
java.lang.ClassLoader.loadClass(ClassLoader.java:306)
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
java.lang.ClassLoader.loadClass(ClassLoader.java:251)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1273)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:619)
OUTPUT FOR PROBLEMS 2) and 3)
org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
causa raíz
java.lang.NullPointerException
org.apache.jsp.query_002dadd_002d2_jsp._jspService(query_002dadd_002d2_jsp.java:107)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
If you had any idea why Tomcat is so unstable, please answer me. I really need
to make this work.
Best regards,
*~ Ariela ~*
¡Todo sobre Amor y Sexo!
La guía completa para tu vida en Mujer de Hoy.
http://mx.mujer.yahoo.com/
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