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

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Java distributed tasks

I am building a system which should consist of 3 servers running the same Java (Spring mvc) service on all 3 of them. Service will be able to do 3 sets of tasks, i.e. A, B and C. What I want is to ...
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5 views

Weblogic jms message driven bean

I'm working with weblogic 10.3.5. I have a maven2 project with those modules ear ejb - containing an ejb3 stateless bean ws - containing a soap web-service client The ws module contains only a ...
3
votes
1answer
129 views

Tomcat shuts down unexpectidly

I am using Apache Tomcat 8.0.23 with 1 GB RAM on centos 6 OS . I have used servlet and jsp for server side . But after few days it shuts down automatically . I have given memory size as CATALINA_OPTS="...
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1answer
203 views

CentOS, Tomcat 6 failed and won't start - java issue?

Linux isn't my strong suit so bear with me if this seems a little newbish. I have a virtual linux box rented, has CentOS (not sure which version) and Apache with Tomcat 6. Over the past 24 hours, the ...
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1answer
152 views

Office 365 and JavaMail

I trying to send email from server using JavaMail and smtp protocol. The email is name@mydomain.com. JavaMail is throwing the exception above and this message "Client does not have permissions to send ...
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1answer
210 views

IBM Cognos Business Intelligence 10.2.2 on WebSphere Application Server 7.0.0.29 fails to start, possibly due to a missing classpath entry

I have a server running IBM AIX 6.1.7.15 TL07 and I am trying to install Cognos Business Intelligence 10.2.2 on WebSphere Application Server Network Deployment 7.0.0.29, using a server cluster to ...
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0answers
487 views

Cannot get a java app to run/start as a service using systemd

I am trying to get a java app(server) to start as a service using systemd on my Centos 7 but it always fails. this is my push.service [Unit] Description=b4xpush server After=syslog.target After=...
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1answer
29 views

Determine if security software is blocking application process on RHEL Linux [closed]

We deployed a networking application implemented in Java 8 on RHEL 7.1. Periodically, the application gets stuck attempting to communicate on non-standard ports. Is there any way to determine if other ...
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70 views

Start java server using init.d script

I am currently trying to start a java server using an init.d script. However, if I start the server it tells me that the server started and i can find a pid file, but the server is not showing up in ...
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0answers
38 views

Tomcat CSR for 2 servers with SAN ssl cert

I have a requirement to install SSL on Tomcat on two different servers. One server for pre-production the other production. I have been told that I must submit a CSR to my CA to get my certs for my ...
0
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1answer
53 views

Tomcat startup with security-manager - CentOS

I've seen this topic before, and the solution given works. However, it doesn't fit in my needs, since it's granting read access to every directory, by setting this catalina.policy: grant { ...
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votes
2answers
157 views

Is it safe to reboot Linux every night? [Being attacked] [closed]

Is it safe to use reboot command to reboot VPS every night? I'm under attack everyday for ~30 mins and I'm pretty sure if they could attack, they would do it non-stop. I contacted hosting provider, ...
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1answer
221 views

Run wordpress with tomcat server

I built website in Java on Tomcat server in Centos 6. My website is running at port 8080 with domain: mywebsite.com. Now I would like to construct a Wordpress blog for my website with another domain ...
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17 views

grizzly server not accessible outside

I'm running a Grizzly server on port 81, but when I try to access the resource outside, I get this But, when I tried netstat to check connections, its binding to my external ip, with its port ...
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2answers
1k views

ERROR 2006 (HY000): MySQL Server Has Gone Away… (HaProxy / Galera)

I setup a cluster of 3 MariaDB servers in a multi-master setup which is working fine. I added a 4th server for HaProxy to load balance and round robin so that we can have a little redundancy which is ...
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1answer
3k views

How can I install Java 8u65 on a Windows Server?

If you attempt to install the Java 8u65 runtime on a Windows Server, the following error message appears: Content within this application coming from the website listed below is being blocked by ...
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0answers
10 views

Java ResultSet & ResultSetMetaData together in a single execute statement

By Jdbc API ,I need to fetch "Column-Name" (by ResultSetMetaData) & Data (ResultSet) of the same Column-Name in a SINGLE Executed query (cannot execute SQL twice for any reason) Is this possible ...
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1answer
83 views

application making http requests should go through proxy server

I have a java app running on an ubuntu server. It makes https requests to a specific other host (say example.com), but it needs to routed through a proxy server, such that it appears that the https ...
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1answer
128 views

Tomcat 8 Permissions Issues (Windows)

I'm currently trying to troubleshoot an issue with a Java web application that is stumping me along with the vendor of the software. We're running on Windows Server 2012 with Tomcat 8. In my scenario, ...
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votes
1answer
935 views

java.io.IOException: Too many open files on tomcat server

I have web application which is based on JAVA (GWT Framework). I hosted my web application on Redhat Linux Server 6.0 using Tomcat 8.0.9 in front of apache http server connected using AJP connector ...
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0answers
34 views

No progress inTomcat7 after Deploying web application directory in linux

Hi I am new to linux environment. Initially we had all the application working on a virtual machine. Due to some reasons we did not used it for a while. So after a long gap when we try to check that ...
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1answer
230 views

Jenkins build fails with OOM: unable to create new native thread

I am setting up a jenkins instance on a VServer with 2GB RAM and nothing else running (usage < 200MB) running CentOS 6.7. When starting a jenkins build on said instance, I always get this error ...
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1answer
77 views

WSO2 Governance Registry: Cannot add Active Directory user store with certificates

I'am using wso2 governance registry 5.0.1 and have a problem to add an active directory user store. I succesfully added my certifactes (.crt files) to the JVM's truststore but have this error: [Root ...
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176 views

Java, VisualVM : Setting up VisualVM properly for Java8 based webapps

I have a Java based webapp which I have deployed on one of our server. Sometimes the JVM died because of out-of-memory error. The application is kinda heavy as it uses Cometd(Push mechanism) heavily ...
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100 views

How to configure FishEye to connect to an Jira server using SSL?

I have a jira server running at https://jira.example.com/ and everything with it is fine. It is a real certificate, not a self-signed cert. I am trying to turn up a FishEye server and I'd like to use ...
3
votes
1answer
95 views

How do I deploy multiple root/intermediate CAs to multiple Java instances across multiple servers?

I have a number of different servers running different software packages developed by multiple internal teams. As they're trying to connect their applications through web calls, we're finding that ...
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0answers
16 views

Can Tomcat handle other website basic digest authentication?

I have a SOAP WebService being served with Tomcat, and I want to make a call to another WebService which is protected by a basic digest authentication. Is there any way that Tomcat can kinda ...
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0answers
41 views

Can't access Rest Api written in Java which is hosted in Windows Server 2012 (Azure)

I Can't access Rest Api calls written in Java which is hosted in Windows Server 2012 (Azure) in apache server. Within the virtual machine i can access through fiddler/browser and get the data. But ...
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votes
1answer
105 views

What does the following Java SFTP error mean? [closed]

I am new to security domain and wanted to get understanding of this error I'm getting : com.jcraft.jsch.JSchException: UnknownHostKey: 127.0.0.1. RSA key fingerprint is a2:39:3f:44:88:e9:1f:d7:...
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0answers
66 views

How to use java UDF on AWS Oracle RDS?

I am trying to use a java udf in AWS Oracle RDS. On a managed Oracle server I can do this by using something like the following: CALL dbms_java.loadjava('-user <username>/<password> /home/...
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1answer
24 views

Removing User Defined chain having links

I have a user defined chain which is linked with the INPUT chain in the filter table. How do i remove this link so that i can remove my user chain ? Linked in the sense i have made a jump connection ...
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1answer
143 views

Saving the Iptables rules to the iptables file

I am trying to save the iptables current rules to iptables file through my java application. Since i do not have the permission to write to the file without logging in to the root, am using this ...
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0answers
105 views

Sophos firewall default settings do not allow HTTPS from Java 6 clients

Our current (default) Sophos firewall (Apache reverse proxy) settings does not allow Java 6 clients to connect over HTTPS. The ssltest result shows that the reason is "Client does not support DH ...
0
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1answer
148 views

Can I deploy a war or java web application into Azure with git?

I allways use control version to develop webs and apps. Now we will make an java web app and deploy it in Microsoft Azure and I've seen that you can upload content with git. But in the case of java ...
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11 views

Generating iptables rules [duplicate]

I am trying to create an interface to manage iptables easily. My current program has iptables rules stored in a pojo, when a user selects an option from my interface for example to block a certain ip. ...
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158 views

Missing ProgramDriver when running Hadoop 2.7.1 MapReduce examples jar file

I'm running the latest Hadoop version (2.7.1) on mint 17.2 in standalone mode. Everything seems to be working fine, but when I run the following command: ./hdfs -jar /usr/local/hadoop/share/hadoop/...
3
votes
2answers
7k views

How to generate new, 2048-bit Diffie-Hellman parameters with Java keytool?

We are non-experts trying - unsuccessfully so far - to update our web server (JBoss-5.1.0.GA) settings to meet Diffie-Hellman standards. After running a test on https://weakdh.org/sysadmin.html, we ...
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2answers
307 views

Problems with installing Cisco ASDM on a Windows Server 2008 R2

I try to get this as short as possible. My company has a computer with the Cisco ASDM-IDM Launcher on it with which we access our Firewall (Type ASA 5505). Now we want to install the ASDM on our ...
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0answers
17 views

Oracle Applications Manager and Custom Web Project

I have the following Oracle Application Manager Oracle Applications Manager Version 2.3.1 Version 2.3.1 Patch 3322219 I would like to know if it is possible to publish/deploy a custom .war/.ear in ...
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1answer
2k views

Java MSI install error 3: -2147287037

We want to silent install Java 8 update 60 via its msi. The installation stops with a vague error which isn't very helpful at finding a solution. This is the MSI log: === Verbose logging started: 10....
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609 views

tomcat8, java8, Unable to compile class for JSP

I have two computers, both running tomcat8, java8, on Ubuntu. The same webapp runs correctly on one computer, but throws a "JasperException: Unable to compile class for JSP" error on the other ...
2
votes
2answers
150 views

Do network administrators block outgoing traffic to not-well-know ports? [closed]

I've written a Java server to listen on port 49474. My client runs on Android phones all over the US. Of course, they will be connecting from a variety of networks: home, work, school, library, ...
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0answers
271 views

Unable to install tomcat using aws cloud formation scripts

I'm very new to the AWS services. I'm trying to use the AWS cloud formation and I created a template. I am unable to create machines using that cause everytime the launch config tries to install the ...
2
votes
0answers
174 views

Unix Server Vs Windows in application deployment (Not a web application) [closed]

Ok, I was browsing through a lot of forums, but I couldn't get a very convincing answer for the same. My question is - What is the advantage of deploying an application in UNIX server instead of ...
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0answers
99 views

After a sudden heavy traffic, Tomcat 8 accepted new connections but not responding

We are running tomcat 8.0.26 on production environment. After a routine deployment, we were switching traffic to the newly deployed tomcat cluster. The rps on each node was about 800 at that time. ...
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1answer
41 views

Java TimeoutException on Ubuntu on SoftLayer

I have java application, that works fine on my local machine. But when I'm trying to start it on SoftLayer, ALL connection is toooo long. For example, simple http connection via HttpAsync or others ...
0
votes
1answer
28 views

Start jar service on ports belong to Apache [closed]

I have been made a service for my Android Game. The service have socket connection, that connection is open on port 4444. My android App has connected with server by IP address e.g. 192.168.1.1:4444 ...
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0answers
19 views

Vulnerability assessment for JAVA based application

A organisation has hosted a web application which has been developed over java based platform. Administrator has hosted a application on Apache TOMCAT running over privateip and mapped it with some ...
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0answers
95 views

Cannot install Oracle's Java 8 on Tinycore/Docker

I tried to create a Docker container based on Tinycore with Oracle's Java 8 JRE in it, but when I try to run the java binary, the shell respons with "not found" - even when calling it by its full path....
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0answers
47 views

Oracle / Sun ILO reports : Certificate not within the validity period

Trying to use to Oracle ILO(M), when I launch the remote console, Java Web Start starts, but then gives this error : Error screen The more information screen looks like this : More information ...