Null pointer exception in java.awt.Window

2001-12-10 Thread Wesley E. Ribeiro

We have a JSP application using Tomcat 3.2.1. We are
getting a Null Pointer Exception inside the
java.awt.Window constructor (stack trace below) in one
machine where this application is deployed. The error
doesn't seem easily reproducible, though.
The line which triggers the error is:

JFrame frame = new JFrame();

Does anyone has a suggestion on what to do ???
Thanks,

Wesley

PS: Machine has W2K and JRE 1.3.1


Error: 500
Location: /RFITPrintFileDownload.jsp
Internal Servlet Error:

javax.servlet.ServletException
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459)
at
_0002fRFITPrintFileDownload_0002ejspRFITPrintFileDownload_jsp_0._jspService(_0002fRFITPrintFileDownload_0002ejspRFITPrintFileDownload_jsp_0.java:210)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at
org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Unknown Source)

Root cause: 
java.lang.NullPointerException
at java.awt.Window.(Unknown Source)
at java.awt.Frame.(Unknown Source)
at java.awt.Frame.(Unknown Source)
at javax.swing.JFrame.(Unknown Source)
at
com.nortel.nsm.rfinterference.PDFGenerator.includeChartInFlow(PDFGenerator.java:425)
at
com.nortel.nsm.rfinterference.PDFGenerator.locateChartInFlow(PDFGenerator.java:649)
at
com.nortel.nsm.rfinterference.PDFGenerator.fillBody(PDFGenerator.java:334)
at
com.nortel.nsm.rfinterference.PDFGenerator.generatePDF(PDFGenerator.java:126)
at
com.nortel.nsm.rfinterference.RFITPrintBean.generateReport(RFITPrintBean.java:50)
at
_0002fRFITPrintFileDownload_0002ejspRFITPrintFileDownload_jsp_0._jspService(_0002fRFITPrintFileDownload_0002ejspRFITPrintFileDownload_jsp_0.java:164)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at
org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Unknown Source)


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RE: Jakarta NT SERVICE--- logout USER

2001-12-10 Thread Wesley E. Ribeiro

Use the -Xrs option when starting the JVM.

Wesley

 -Original Message-
 From: Catalin [mailto:[EMAIL PROTECTED]]
 Sent: Monday, December 10, 2001 2:55 PM
 To: [EMAIL PROTECTED]
 Subject: Jakarta NT SERVICE--- logout USER
 
 
 Hello to everybody!
 
 
 I have a jakarta-tomcat-3.3m4 on a Win2k system and
 I have a problem:
 every times one user of Operating System logout, the
 service it
 stoppes. :-(
 Where do I need to modify the config so that will
 not be happens any
 more??
 
 Thanks!!


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NS 6.2 crash (off-topic)

2001-12-06 Thread Wesley E. Ribeiro

First of all, sorry for the off-topic question. But
since we are using Tomcat, I though someone here might
have seen this issue before.

Our main page has two frames: the left frame is like a
table of contents, and the right
frame shows the actual data. The left frame has an
applet. When the user clicks on a label
inside the applet, it calls
getAppletContext().showDocument(url, main) to show
the page 
in the right frame.

If the user clicks on a special label in the applet,
instead of showing the page in the
right frame, it loads a page in the base frame
(getAppletContext().showDocument(url, _top)).

This new page also has two frames, and the one in the
left also acts like a table of 
contents (with different links, of course).

Now, on some machines, if you click on a label inside
this second applet 
(to load another page), NS 6.2 crashes. All url's
loaded by the applets have parameters
passed in the url name (like ?p1=p2=), and I
discovered if the number of parameters
is greater than 1, NS always crashes in these
machines. If it's equal to 1, the crash doesn't
always happens. IE works fine.

Environment: JRE 1.3.1, Tomcat 3.2.1, WinNT 4.0

So, does any one have a clue ?
TIA,

Wesley



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Re: Toncat as service on Win2K

2001-10-03 Thread Wesley E. Ribeiro

We had this problem. We have solved it by adding
the option '-Xrs' as a startup parameter for the JVM
in the wrapper.properties file.

Wesley

--- Marciu Liviu [EMAIL PROTECTED] wrote:
 Hello tomcat-users,
I have registred Tomcat3.2.3 as a service on
 Win2K, under
LocalSystem and under ./Administrator. I set it
 up to start
automaticly.
All works fine, I start the computer and the
 service is working, I
log on and the service is working Ok, but when I
 log off (not
shutdown)  the service stops.
 
Why isn't the service running after I log off ?

Thank you.
 
   
 
 -- 
 Best regards,
  Liviu 
 mailto:[EMAIL PROTECTED]
 
 


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Re: Re[2]: Toncat as service on Win2K

2001-10-03 Thread Wesley E. Ribeiro

Supposing you have used the jk_nt_service utility to
install TomCat as a service in Win2K, you'll have a
file called wrapper.properties in the conf directory
of the TomCat installation directory.
In this file, you'll have a line like this:

wrapper.cmd_line=$(wrapper.javabin)-classpath
$(wrapper.class_path) $(wrapper.startup_class) -config
$(wrapper.server_xml) -home $(wrapper.tomcat_home)

All you have to do is add '-Xrs':

wrapper.cmd_line=$(wrapper.javabin)-Xrs -classpath
$(wrapper.class_path) $(wrapper.startup_class) -config
$(wrapper.server_xml) -home $(wrapper.tomcat_home)

Even if you didn't use jk_nt_service, whatever the
utility you have used you'll have a point where the
JVM is called. This is where you should put the '-Xrs'
option.

Regards,

Wesley

--- Marciu Liviu [EMAIL PROTECTED] wrote:
 Hello Wesley E. Ribeiro,
 
   Sorry but I don't know how to set the '-Xrs'
 option as a startup
   parameter.
   Please tell me.
 
 Thank you.
 WER We had this problem. We have solved it by
 adding
 WER the option '-Xrs' as a startup parameter for
 the JVM
 WER in the wrapper.properties file.
 
 WER Wesley
 
 WER --- Marciu Liviu [EMAIL PROTECTED] wrote:
  Hello tomcat-users,
 I have registred Tomcat3.2.3 as a service on
  Win2K, under
 LocalSystem and under ./Administrator. I set
 it
  up to start
 automaticly.
 All works fine, I start the computer and the
  service is working, I
 log on and the service is working Ok, but when
 I
  log off (not
 shutdown)  the service stops.
  
 Why isn't the service running after I log off
 ?
 
 Thank you.
  

  
  -- 
  Best regards,
   Liviu 
  mailto:[EMAIL PROTECTED]


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RE: Tomcat crashes after some requests

2001-10-01 Thread Wesley E. Ribeiro

Ok, thank you all who answered. 
I'll try a new driver and see if it makes a
difference.
I've seen the driver list on Sun's page, but since we
have a limited time to try and decide, which product
do you (or anyone else with experience in this field)
recommend ?
I'm particularly interested in success stories
accessing MS-Access.
Best regards,

Wesley
 
--- Barney Hamish [EMAIL PROTECTED]
wrote:
 I had a similar problem but it was due to the
 ODBC:JDBC bridge. As has been
 pointed out numerous times on the list the ODBC:JDBC
 bridge is not
 production ready. I replaced it with a production
 quality driver and it
 hasn't crashed since.
 It's worth a try.
 Hamish
 
 -Original Message-
 From: Wesley E. Ribeiro [mailto:[EMAIL PROTECTED]]
 Sent: Friday, September 28, 2001 3:16 PM
 To: [EMAIL PROTECTED]
 Subject: Tomcat crashes after some requests
 
 
 Hi !
 
 We are using Tomcat 3.2.1 (stand-alone) in our
 project, and after some number of requests (this
 number is variable, but usually low, like 50 or so),
 Tomcat just crashes. There seems to be no useful
 information about the crash in the logs, and we
 could
 not identify a page (or sequence of pages), which
 could reproduce the crash. Also, when most crashes
 happen there is just one client browser accessing
 Tomcat.
 
 We are using WinNT 4.0, and Tomcat is being used as
 a
 NT service (created using the jk_nt_service
 utility).
 The JVM used is the one in the JDK1.3.1.
 The code in the jsp pages access Oracle and
 MS-Access
 databases (Oracle's JDBC driver and the JDBC-ODBC
 driver for Access), and the pages contents are very
 common: some tables, a few applets.
 
 I know this is little to work with, but any help is
 appreciated.
 Thanks,
 
 Wesley


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