Programming language and runtime environment that allows compiled Java programs to run unchanged on most hardware and software platforms

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Java Spring application working on one system, dying on almost identical one

Introduction I'm running a third party Java Spring application on RHEL, that refuses to run on machines cloned from a certain RHEL 6.5 template. It just dies on startup with a bogus exception (see ...
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2answers
39 views

Apple OSX with JVM support (or any virtual machine) [duplicate]

Few things I didn't understand on OS X... From 2010 until today... Throughout the internet there were several sources stating that according to Apple's EULA it wasn't legal to run any virtual ...
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512 views

tcpdump on any interface does not support VLAN

I have tried the following command: tcpdump -i any vlan , on both Ubuntu 10.04 (kernel 2.6.32-36) and Ubuntu 12.04 (kernel 3.8.0-39) and got the following output: tcpdump: no VLAN support for data ...
0
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1answer
52 views

TOP processes by system time

I have a system running 2 processes - MySQL and Java I'm seeing 20-30% of the time spent in %system. I've looked around to try and find a way to identify which what the balance of the system time is ...
13
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4answers
425 views

How to convince my Administrator that Java ON A SERVER is not insecure per se?

The Application We have a small Java application which uses some Camel routes to pick up uploaded files from a webserver, process them and send out some e-mails with the results. The server on which ...
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0answers
693 views

Upgrading to Java 7u65 breaks my Deployment Rule Set for Oracle applications

My company uses an older version of an Oracle application that requires Java 6u45. Naturally we want to be secure, so we use a Deployment Rule Set to specify 6u45 for that internal application and let ...
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2answers
516 views

Changing process priority in linux for jvm process

Is it fine if I change the JVM process priority through nice at server machine [linux]. I wanted my JVM process to use maximum resources from OS. What is the standard practice? Do people tune the ...
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0answers
960 views

JVM process resident set size “equals” max heap size, not current heap size

After a few reading about jvm memory (here, here, here, others I forgot...), I am expecting the resident set size of my java process to be roughly equal to the current heap space capacity. That's not ...
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3answers
853 views

How to update OpenJDK on RHEL

I need to update OpenJDK for one of the company servers (RHEL 6). It is currently running OpenJDK 1.7.0_09 but I need to upgrade to OpenJDK 1.7.0_45 I read some tutorials but they seem to use yum ...
0
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2answers
180 views

Prevent APT from overwriting custom files

My server runs a Java application that requires I replace a few java library files with ones I downloaded on my own. This has to do with JCE security extensions and isn't really relevant to my ...
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0answers
148 views

DRS: Unknown JNLP Location

We are using Deployment Rule Sets to limit access to the older JRE to well-known applications but are running into a problem. One business critical applications has the following properties (*s to ...
2
votes
1answer
723 views

RHEL Java Application returns “No space left on device” but only 3% used [duplicate]

My Java Application returns following Exception when saving a new file in /opt/wso2 on a CentOS 6.4: Caused by java.io.FileNotFoundException: ... (No space left on device) Caused by: java.io....
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1answer
129 views

504 error crash on openshift

I have deployed a java application in openshift. I am using bronze plan. My application is a scaled application and also uses 4GB of memeory. I got an 504 error crash two or more times in a day. ...
4
votes
2answers
1k views

Why is Wireshark not capturing certain POST requests?

If I use this filter in Wireshark: http.request.method == "POST" and use the vote buttons to vote for a stack exchange question, then Wireshark captures the corresponding POST request. I can also see ...
0
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2answers
188 views

Java Deployment Ruleset not working

I've created a Java Deployment Ruleset that looks like this: <ruleset version="1.0+"> <rule> <id location="http://hpfweb.mydomain.com/" /> <action permission="...
0
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1answer
410 views

Record raw http requests in weblogic

We are running a java ee application on weblogic 12.1 that has a soap messaging component. We are having trouble with our soap responses and want to get more details so we can figure out exactly what ...
0
votes
1answer
32 views

Nginx: index mapping

I'm trying to install Nging as a frontend server for HTTP requests but the welcome page does not work: server { listen 8081; server_name localhost; root /home/me/...
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votes
1answer
324 views

debian - using apache virtual host as proxy [duplicate]

I have a server with debian 7.4 and apache2 installed. I have setup virtual hosts and all works well. Now instead of pointing the virtual host to a documentroot I need it to point to a port on the ...
0
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0answers
283 views

Handle many requests Web Services

I created a web service with Jersey and Tomcat in localhost. Now I want to expose my web services to all users in the world, so let's assume you have many concurrent requests. I have access to a ...
4
votes
1answer
5k views

How to replicate Memcache data among servers

A same question in SO can be found from here . But since I couldn't find any suitable answer, I am asking with additional info. I have many memcache clients but all of them access one memcache server ...
0
votes
1answer
516 views

Install Apache Derby on CentOS 6.4

I'm not a Java developer, my knowledge is very limited to this topic. I want to deploy a .war webservice on my Tomcat server, which fails most likely because of its Derby dependency (just a guess from ...
2
votes
2answers
701 views

Tomcat crashing after a few hours

I'm running a CentOS 6.5 64 bit OS with Tomcat and one web application. I use Apache (httpd) as a reverse proxy (ProxyPass) to the application. Until recently, it (Tomcat) has been running fine ...
0
votes
2answers
976 views

Multiple java versions

I have a server running rhel5 and jre 1.6. All my apps are running perfectly for now. But I want to install java 1.7 but keeping java 1.6 as the default so my running apps want be affected. If I want ...
2
votes
1answer
581 views

Error while installing jasperserver

I am about to install a jasperserver instance on my server. This is not my first jasperserver installation and I did this already on my host system and on a lxc. But now for some reason I get ...
0
votes
1answer
94 views

Strange behavour of which in a shell script launched as a forked process

So I have a java process that is doing some automation. One of the things it has to do is find the JDK home on random machines. So I wrote a shell script to try and find the JDK home assuming that ...
0
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1answer
165 views

Java 7 or 8 is required to Run .Jar (Linux)

This is a newly installed CentOS 6.2 x86_64 I have downloaded java 8u5 RPM for GNU/Linux to run a .jar file, but I am unable to. I have removed java through terminal through the command rpm -e jar-1....
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0answers
273 views

Tomcat 8 with Apache, Configure Several Java & WordPress Domains [closed]

** PROBLEM SUMMARY ** I think the subject line defines my question pretty well, but I'm going to give an example of my current and goal setup for clarification. Considering the sheer number of ...
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2answers
453 views

CENTOS Vs Windows 2008 R2 [duplicate]

We have an application running on Windows Server 2008 R2 with Apache WAMP, Tomcat, Mysql, PHP and java SE for last 4 years. Its a Web based ERP application. I would like to know if it makes sense to ...
3
votes
1answer
6k views

Signing a Java Deployment Rule Set JAR using AD Certificate Services

I am tasked with deploying Java 7 Update 55 along with a Java Deployment Rule Set to all Active Directory Windows clients. I've managed to get a solid Java software deployment setup but I'm now ...
2
votes
1answer
437 views

Is the Kerberos SPN FQDN significant to the server, or is the keytab enough?

I spend most of my time as a developer, so I'm not familiar with all the details... I have a service running on a linux host. I want to use Kerberos to transmit identity information to the service. ...
4
votes
1answer
303 views

How to determine the Java version needed for different versions of DRACs

We have two different server machines in our workplace, they are: Dell - PowerEdge T620 - runs drac 7 (ver 1.35.35) Dell - PowerEdge 2950 - runs drac 5 (ver 1.65) Is it possible for me to ...
1
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1answer
1k views

can't get tomcat to offer TLS_ECDHE_ECDSA_… ciphers

my tomcat (7.0.52) Connector is configured with a cipher list like ciphers="TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, ...
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0answers
333 views

Tomcat 7 went <defunct>, cannot kill the process. What might be the cause?

I was running tomcat7 production server for several days, and then suddenly it was unreachable by the http port. Strangely though, the background processes were still running as can be seen by the ...
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votes
1answer
255 views

How to prevent a specific request to redirect from http to https in SSL configuration?

I am facing one issue regarding ssl. Basically i want to stop redirection of only one request from http to https in Jboss 7. According to the requirement all http request should be redirected to ...
0
votes
1answer
1k views

How do I change Jboss' logging directory

I'm running jboss-as 7.2. I'm trying to configure all log files to go to /var/log/jboss-as but only the console log is going there. I'm using the init.d script provided with the package and it calls ...
8
votes
1answer
389 views

Good practices regarding discontinued software in production (OpenDS)?

How bad is it to use OpenDS, which is not actively maintained, and had the last patch in 2010, and require JDK6(which is also obsolete) in a production environment?(Although at the backend and not ...
0
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0answers
154 views

Embedding a browser in a 32bit Java/SWT/GTK application on 64bit linux

I have created a Java Application that uses SWT 3.6 and now I want to use the browser widget on a 64bit Debian 6.0 system while using a 32bit Java JRE and the 32 bit SWT/GTK libraries. I didn't feel ...
3
votes
2answers
17k views

Java applets not starting in IE on Windows Server 2008 R2

I can't get the Java ActiveX Add-on to work on a Remote Desktop Server 2008 R2 with Desktop Experience enabled. This is what I get after enabling compatibility mode from http://www.java.com/verify : ...
0
votes
2answers
344 views

FTP to multiple servers using one domain without load balancing

So i'm looking into how to allow users to FTP into different servers just through one domain such as ftp.mysite.com. Each of the servers will be unique in a manner of speaking, running their own ...
3
votes
1answer
1k views

Load balancing glassfish v4.0 CLUSTER with apache HTTP server: Location of apache

I am teaching myself to build clustered Java EE 7 applications. I am focused on Glassfish Server v4.0. Based on the official documentation (Chapter 7 page 133) , Glassfish can be loadbalanced using ...
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0answers
29 views

JRE fragmentation and solutions

In my environment, we have several web based applications that leverage Java for various web components. The issue is, each one of these applications requiring a different jre version. We are always ...
0
votes
1answer
2k views

Tomcat & Java not listening on IPv6

We've got a webserver running Ubuntu 12.04 LTS, Tomcat 7 and Oracle Java. So far, we have been serving a web app on IPv4 address on ports 80 and 443 (80 redirects to 443). I'm trying to make the ...
4
votes
1answer
2k views

Jetty JMX setup for remote access

I am having some issues getting JMX working on Jetty(9.1.3.v20140225), so I have had a read over the Jetty doco on this. So I have added the following to the jetty.conf # ============================...
0
votes
1answer
698 views

Solr: Using multiple SQL server data sources results in error: “…\sqljdbc_auth.dll already loaded in another classloader”

I have one Solr instance running in Jetty with JRE 8 with 3 collections (same as cores, yes?) and more to come. I am indexing data from SQL Server, connecting using NTLM as the identity of the Java ...
1
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1answer
5k views

Installing oracle 7 JDK on FreeBSD 10 — Wants i586, but on AMD64

I need to install Oracle Java 7 on my FreeBSD 10 server but I am a bit confused. I am using the ports, and when I do a make install in the /usr/ports/java/linux-sun-jdk17 directory I get the ...
3
votes
2answers
420 views

After kill -9 process won't disappear and port is still bound

We have a Java server application running on Mac OS X. Occasionally this application has become unresponsive, and we have resorted to killing it with kill -9. However, the process doesn't disappear; ...
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1answer
103 views

ColdFusion 9 server not restaring - “Permission denied” errors

I had to restart my ColdFusion 9 server on CentOS because of a memory performance issue, but now the server won't restart again. When looking at cfserver.log I can see how there's "Permission denied" ...
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1answer
5k views

Create setenv.sh to set system property

I have to use setenv.sh to set system properties. I am using Linux OS and Tomcat Server 6. As described here Linux Environment- setenv.sh , I have created a setenv.sh in tomcat/bin, and the only ...
2
votes
1answer
5k views

How to solve SocketException: Permission denied: connect

I recently encountered a problem that is giving me a headache and I need help ... The System consists of two subsystems, called A and B, each running on a standalone Tomcat instance and currently ...
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0answers
906 views

Java Deployment with automatic updates (without user confirmation)

Here in our company our users use 1 Java application which is updated every monday and always needs the latest java update. We install Java on Clients through SCCM 2012 R2. I already know how to do ...