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

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0
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3answers
517 views

Proper acting when a process is consuming 100% time of CPU

On several machines I have a problem with a process that is using 100% time of a CPU. USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND root 85740 100.0 0.2 34668 ...
2
votes
3answers
3k views

JMX connection to Tomcat running on Amazon EC2

My Tomcat 7 process, which I run on a server on Amazon EC2, has settings such as these in CATALINA_OPTS which should allow me to connect for JMX monitoring remotely: ...
8
votes
1answer
367 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 ...
7
votes
2answers
7k views

SSL Certificate Error: certificate_unknown

I want to create push notification server and while installing SSL certificate and .p12 file in server we are facing the below error: I want to know what is the wrong with ssl certificate because I am ...
1
vote
1answer
53 views

In-house java apps work in citrix environment but will not run locally on a users machine

BACKGROUND I am one of three systems administrator for the organization i work at. We previously had a Java developer who is no longer with the organization. The developer built several custom Java ...
0
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0answers
98 views

json works on localhost but not working on my real server

I have an application that is getting information from my server (online), I have a version of that website in my computer (localhost), The application is working on localhost can get the json, But I ...
2
votes
1answer
339 views

Can I connect multiple SPAN Ports to a hub to monitor both from one NIC

Suppose I had two Cisco switches each outputting some network traffic to a SPAN port, and I needed to send the sum of all that traffic to a third device for monitoring that traffic via libpcap. The ...
1
vote
0answers
11 views

Solr 503 when using boost function

I have three environments which are set up to use Solr: local, staging and production. The local configuration differs slightly to the staging/production however the other two are identical. I ...
0
votes
0answers
47 views

OpenShift, change java security properties

The latest WildFly OpenShift image includes Java 8u31. But my apps needs the disabled sslv3 'algorithm'. So I need to edit the java.security file from the JRE but this file is read-only. How can ...
0
votes
2answers
48 views

java installed but not working (dependency issue??)

I just installed Java 8 on my new VPS I set the links correctly but, still java, or javac won`t work: root@vpsXXXXX:~# update-alternatives --display java java - Auto-Modus Link verweist zur Zeit ...
0
votes
0answers
34 views

CORBA lookup fails with NameNotFoundException

The CORBA lookup works fine from localhost: thufir@doge:~$ thufir@doge:~$ appclient -client NetBeansProjects/corba/GreeterCorbaClient/dist/GreeterCorbaClient.jar {org.omg.CORBA.ORBInitialPort=3700, ...
0
votes
0answers
22 views

Apache 2.4 switching sessions from primary to backup in between even when sticky session is enabled

I am facing issue with long running requests . We have a case of file upload in which file upload process starts and at front end we represnt the user with a progress bar to show the percentage of ...
0
votes
3answers
148 views

Jenkins maven java 7 permission issue

I'm getting this error when attempting a Maven build in Jenkins, Building in workspace /var/lib/jenkins/workspace/xxxxprojectnamedeletedforprivacyxxxx java.nio.file.AccessDeniedException: ...
2
votes
8answers
4k views

What are best practices regarding multiple JVMs on a server?

Many third party products require a specific version of the JRE or JDK and many of our servers have multiple duties. Application teams argue they should not care where Java is installed. Most of the ...
0
votes
2answers
249 views

Dependancy error when building maven project

I'm trying to move an application from being built locally on a Windows Eclipse installation to a Jenkins server. From what I can see the settings are correct and the dependencies should resolve. Even ...
0
votes
0answers
42 views

how do I configure a glassfish host and broker to use JMS?

In trying to run a JMS Message producer remotely, I'm going through the fine manual: Administering the Java Message Service (JMS) GlassFish Server Open Source Edition Administration Guide Release 4.0 ...
3
votes
1answer
4k views

JBoss 7.1.1 Clustering, JBAS014775:New missing/unsatisfied dependencies

I am following https://docs.jboss.org/author/display/AS71/AS7+Cluster+Howto I managed to get 2 servers running. One slave. One master. I managed to get to "Dry Run" I got: [Host Controller] ...
42
votes
5answers
3k views

How do I install the JRE on a Windows server without Oracle adware?

I would like to install Java on one of our servers, but I am reticent due to Oracle's bundling of an Ask.com toolbar and some virus scanner. I've read that the java updater even installs these for ...
1
vote
2answers
3k views

error ocuuring ::: failed to install tomcat 7 service

While I'm trying to install Tomcat(apache-tomcat-7.0.23.exe) on my system (Windows XP SP3), which is in company's network, it is showing me the following error: failed to install tomcat 7 service ...
18
votes
6answers
63k views

What is the value of JAVA_HOME for CentOS?

I have install java through yum on CentOS, however another java programme needs to know what the JAVA_HOME environmental variable is. I know all about setting environmental variables, but what do I ...
0
votes
0answers
61 views

Tomcat client certificate authentication, client certificate not sent

I've add client certificate based authentication on our Tomcat servers. Both client and server are tomcat servers with internal CA issued certificates. Each tomcat has its own keystore (PKCS12) ...
1
vote
1answer
435 views

System-wide JRE settings in deployment.properties file are ignored?

Basically I have the same problem as in this question. However the proposed solution doesn't work for me, not on a Win2003 server and not on a Win7 laptop used for testing. I have a Java SE 6 program ...
0
votes
0answers
32 views

tomcat https static content

We are using tomcat to serve everything over http. BUT, we have a login page which is served over https since we have them enter a password. Recently, chrome has stopped supporting serving non secure ...
0
votes
0answers
10 views

Library to create self querying SNMP Agent in Java

I am trying to create an SNMP Management Agent that will query itself the OID of the Object to be retrieved. It will retrieve the value and store it in an internal database for later retrieval. The ...
3
votes
1answer
361 views

Is it appropriate to use HeapDumpOnOutOfMemoryError in Production?

We have been struggling to diagnose the cause of an OutOfMemoryError we experienced on one of our production servers. Our attempts to reproduce the issue in soak tests have so far failed, and we are ...
0
votes
0answers
14 views

CATALINA_HOME not exported properly in Ubuntu 12.04

Running Ubuntu 12.04 and Tomcat6 A Java web app (ClinCapture) attempts to access catalina_home and instead of returning CATALINA_HOME=/usr/share/tomcat6 it returns ...
1
vote
1answer
715 views

Suddenly error='Cannot allocate memory' (errno=12) [closed]

So this morning I noticed my website is down, went on my server and saw that the webserver has been stopped. When I try to start it again I get this error start -Dhttp.port=80 ...
1
vote
0answers
128 views

Disabled SSLv3 in Tomcat, but Still Showing POODLE Vulnerability

I have a Windows 2008 server with Tomcat 7.0.59 & Java 8u31 & I am trying to ensure that SSLv3 is disabled. Looking at the changelog for Java, SSL3 should no longer be supported and the Java ...
0
votes
0answers
73 views

Apache Tomcat for Windows - cannot get https to work

Environment: Windows 2003 Server 64-bit Running on VMWare ESX 5.5 8GB of Ram Apache Tomcat 6.0.36 Server D:\Program Files\Java\jdk1.6.0_26\jre\bin\server\jvm.dll JDK 1.6 update: 26 Have been able ...
0
votes
0answers
66 views

Tomcat is not starting although JAVA_HOME path is correct

I have linux server in which I run several Tomcats. The current Java I use is 64 bit. All Tomcats use 64 bit java but one. This one Tomcat needs to run with 32 bit Java. If I don't change anything, ...
0
votes
1answer
187 views

How to run Wildfly best?

Within development I start Wildfly 8 as standalone. Then I copy all my WAR files to /standalone/deployments and run them over http://localhost:8080/projectname/. When thinking of a productive server ...
1
vote
2answers
223 views

Deploying tomcat/mysql application on windows

Our web service software consists of a (precompiled) war file and a mysql database. We provide installation packages to deploy it on Ubuntu or Fedora, in a standard Tomcat7/MySQL/Apache2 setup using ...
-1
votes
2answers
309 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 ...
0
votes
1answer
58 views

JVM outputs “No console, will fork to get enough memory” when started via cron

I have come across an odd message when starting up a JVM via cron: "No console, will fork to get enough memory". Google only returns a handful of results when searching for that string, so I figured ...
-2
votes
2answers
251 views

Vertx: What do these errors mean?

I'm trying to run a java applet using the Vertx platform but getting the following errors, as I am not a java person.. I'm having a hard time understanding how to fix these, your help is much ...
0
votes
1answer
121 views

Effectively Monitoring Server Load of Production Amazon AMI + Tomcat + Lucee Instance [closed]

Looking for advice as to effectively monitoring the load of a production web server. Preferably solution will be free or minimal cost (server is owned by a very small web development company - read ...
3
votes
5answers
5k views

Unable to find javac after installing OpenJDK 1.6 and 1.7

I am currently at a loss as to why this is happening. I did some basic research by running: whereis javac -and- find / -name javac ...and I came up with nothing I searched the web for answers but ...
0
votes
3answers
4k views

How do I install javac (JSDK) on Scientific Linux, 64Bit

I am trying to finds a way to install the Java SDK (javac) on Scientific Linux 64bit with yum or anyway.. Can someone please tell me the best what to do this so I can use maven for my builds etc
0
votes
0answers
30 views

Taking a thread dump on IBM J9 takes a long time

I'm trying to collect a java core on AIX (java version 1.6). There is only one dump agent configured, which collects a system dump, heap dump and java core on every SIGQUIT, so I used HealthCenter to ...
0
votes
0answers
48 views

Openfire how to fix? Error creating secured outgoing session to remote server

I have a OpenBSD server 5.6, in this server install Openfire 3.9.3. But I am getting the following error: error.log 2015.02.16 08:59:44 org.jivesoftware.openfire.session.LocalOutgoingServerSession ...
0
votes
2answers
341 views

Glassfish basic configuration forgotten

I installed glassfish v3 some time ago and it's been a while since I last used it, so I forgot the port on which the server is listening and the port on which the admin console is listening. Moreover, ...
0
votes
3answers
342 views

java.lang.OutOfMemoryError: Java heap space

In our application we have both, Apache Server (For frond end only) & JBoss 4.1 (For business end). We are using Ubuntu 12 as server OS. Our application is throwing "java.lang.OutOfMemoryError: ...
0
votes
1answer
91 views

Why is my java process using much more heap space than specified?

I'm running a Java application on Solaris using the -Xmx256M switch. When I connect via JMX, the JVM tells me the application is using about 50Mb of heap, and correctly states the maximum heap size is ...
1
vote
0answers
44 views

HP Radio Port 210 web configuration

We acquired used WiFi system to provide better wlan for the customers in our hostel. The switch is HP PROCURVE 5406zl and we have 50 or so HP PROCURVE RADIO PORT 210 access points. I set up the ...
0
votes
2answers
2k views

find the path of jdk and set JAVAHOME

I've got java installed on my Ubuntu VirtualBox, and I am trying to run sunspot, but sunspot can't find java. typing 'java' from the command line return The program 'java' can be found in the ...
1
vote
0answers
473 views

Add an entire domain to Java Exception list

I'm administering hundreds of machines with Java interfaces that I sometimes need to get into. Unfortunately, the default Java settings in Windows block all of these applications from running, ...
4
votes
1answer
6k views

Java 8 Update 25 Install Via GPO Not Working

I am trying to set up our Active Directory DC to automatically install Java 8 Update 25 (jre1.8.0_25.msi) using Group Policy. When attempting to add the jre1.8.0_25.msi package in the GPO at Computer ...
0
votes
1answer
382 views

How can I upgrade to Java 1.8 on an Amazon Linux Server?

I tried sudo yum update but it just keeps java "1.7.0_75". I need 1.8 for it to work with another application but can't figure out how to upgrade it. Do I need to manually install it somehow? There's ...
3
votes
1answer
3k views

Clearing Java certificates cache (force reload certificates)

A simple question here. One application gave me this exception when trying to access a website with a expired certificate: java.security.cert.CertificateExpiredException So, I renewed the ...
1
vote
4answers
785 views

What's a good setup for running Java and PHP applications with SSL on the same server?

I have one Java- and one PHP-application which I both want to run on the same machine (using Tomcat). As far as I can see, I have two options: Option 1: Do the classic apache-tomcat setup with ...