JVM Crashes Sporadically with ORA-24550 while Running Tomcat Web App

We have experienced a problem that has been troubling us for some time now. Our website goes down sporadically as a result of a JVM crash. The Tomcat catalina.out log reads as follows:
# A fatal error has been detected by the Java Runtime Environment:
# SIGSEGV (0xb) at pc=0x00002aaac5938c2b, pid=2214, tid=47766235233056
# JRE version: 7.0_07-b10
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.3-b01 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libclntsh.so.11.1+0x15f7c2b] nnfltimexp+0x1f
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
# An error report file with more information is saved as:
# /usr/local/tomcat/tomcat-gbco2/logs/hs_err_pid2214.log
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
ORA-24550: signal received: [si_signo=6] [si_errno=0] [si_code=-6] [si_int=367714944] [si_ptr=0xffff810115eae280] [si_addr=0x69000008a6]
kpedbg_dmp_stack()+360<-kpeDbgCrash()+192<-kpeDbgSignalHandler()+119<-skgesig_sigactionHandler()+218<-__sighandler()<-gsignal()+53<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0<-00002B71717BC1F0
I am no expert in reading crash logs, but I can provide it if it would be helpful.
We are running our app on
Intel (R) Xeon (R) CPU X5550 @ 2.67GHz with 4 cpu cores.
CentOS Release 5.7 (Linux xena.pcbi.upenn.edu 2.6.18-274.3.1.el5 #1 SMP Tue Sep 6 20:13:52 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux)
Total server RAM: 24GB
Tomcat 6.0.26
Java 7.0_07-b10 (Java VM: Java HotSpot(TM) 64-Bit Server VM)
Oracle Enterprise database server (11.2.0.3) - (separate server)
OCI 11.2.0.3 (64-bit client)
Our sqlnet.ora file contains the following:
NAMES.DIRECTORY_PATH= (LDAP, TNSNAMES, EZCONNECT)
DIAG_ADR_ENABLED=OFF
DIAG_SIGHANDLER_ENABLED=FALSE
DIAG_DDE_ENABLED=FALSE
We read about issues with OCI 11.2.0.1 in the Oracle support website and we upgraded. But the issue remains. We are at a loss as to where to look/what to do next. Any suggestions would indeed be most welcome.
Many thanks -
Cris

Chris,
Another developer is reporting a very similar problem:
http://www.jfree.org/phpBB2/viewtopic.php?t=10452
Hopefully we can reduce this to a fairly simple and reproducible test case and then get it fixed.
Regards,
Dave Gilbert
JFreeChart Project Leader

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Now let me elaborate what i've done till now.
My webapplication folder structure is : C:\bea\user_projects\domains\mydomain\applications\Suresh\WEB-INF\classes\Sai\ServExamp.class
My servlet is ServExamp.java
I created a folder called "Suresh". In that folder created another folder called "WEB-INF". In WEB-INF created a folder called "Classes".
Since my servlet is in package "Sai", the .class file reside in \Suresh\WEB-INF\Classes\Sai\ServExamp.class
The source code is :
package Sai;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class ServExamp extends HttpServlet
public void doPost(HttpServletRequest req,HttpServletResponse res)throws IOException
PrintWriter out=res.getWriter();
java.util.Date today=new java.util.Date();
out.println("<html>"+"<body>"+
"<h1 align=center>HF\'s Chapter1 Servlet </h1>"
+"<br>"+today+"</body>"+"</html>");
Now i'm almost done creating a web application. Next, I constructed a simple web.xml descriptor that gives a web friendly name for my servlet, and points to the servlet. I constructed web.xml descriptor file in the WEB-INF folder (C:\bea\user_projects\domains\mydomain\applications\Suresh\WEB-INF\).
The web.xml file source is :
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Hello World Web Application</display-name>
<description>Test Servlet</description>
<servlet>
<servlet-name>ServExamp</servlet-name>
<servlet-class>Sai.ServExamp</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServExamp</servlet-name>
<url-pattern>/Suresh</url-pattern>
</servlet-mapping>
</web-app>
Now I have told Weblogic that the URI /Suresh corresponds to my servlet "Sai.ServExamp".
My Web Application is ready to be deployed at this point. I logged onto Weblogic's admin console,
1) clicked on deployments, then navigated to "Web Application Modules" .
2) Clicked "Deploy new Web Application Module"
3) Navigated to the location of your web application folder (Suresh). There was a radio button next to it indicating that I can select that folder as a valid web application.
4) I Clicked that radio button and clicked "Target Module".
5) It informed that my web application "Suresh" will be deployed to myServer.It asked a name for my web application deployment. By default it was "Suresh"
I clicked Deploy.
6) After deployment, my web application "Suresh" appeared in the "Web Application Modules" tree on the left.
I Clicked on "Suresh"( my web application) then clicked the testing tab, then clicked the link shown there(http://localhost:7001/Suresh-2).
It was not showing my servlet (showed a 403 error)
Error - 403
This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable.
I think so it came b'coz I don't have an index.html or index.jsp page.
7)Instead,I added my servlet on to the URL it provided.
http://localhost:7001/Suresh-2/Suresh
It is showing these error code: Http: 505 resource not allowed
The page cannot be displayed
The page you are looking for cannot be displayed because the address is incorrect.
Please try the following:
If you typed the page address in the Address bar, check that it is entered correctly.
Open the localhost:7001 home page and then look for links to the information you want.
Click Search to look for information on the Internet.
when i just type : http://localhost:7001/ -> Error 404 not found error
it's showing
Error 404--Not Found
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:
10.4.5 404 Not Found
The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.
If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.
I want to run my web application & any help would be appreciated.
Thanks in advance.
with regards,
S.SayeeNarayanan.
Note: I even deployed my war file, which i got by execution of (jar cv0f webapp.war . ) command from the root directory of my web application i.e. Suresh
Then executed my webapplication it is showing
error-505 resource not allowed.
--------------------------------------------------------------------------------------------

try a fully qualified path to the pem file

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