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Questions tagged [java]

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

1835 questions
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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 parameters > 1024 bits". ssltest reports with 'A'…
mjn
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Enable HugePages on Linux for multiple services/processes

On one of my Debian machines I'm running a service on a JVM and a MySQL instance. I have enable the HugePages following various online guides but I'm having a problem. Here is my configuration: vm.nr_hugepages = 2816 vm.nr_overcommit_hugepages =…
ColOfAbRiX
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Tomcat threads are increasing but never decreasing

We are using new relic to monitor tomcat threads. The graph shows increase of thread count,but it never decreased even the application is idle. We noticed that when it increase CPU also increased and CPU got reduced when application is idle. But…
Selvakumar P
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mod_ssl client certificates on a reverse proxy

I am trying to add client certificate authentication on a reverse proxy that proxies an oracle application. Before adding, and if i remove the subsequent code, the oracle application is able to start java, load, and function properly. When I add the…
Rory McDonald
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How can I verify the heap size startup arguments for an active JVM that's running as a Windows service and loading JVM params from registry?

I've got a Windows server with a third-party application on it that runs as a Windows service. The service/application is actually a java virtual machine however it displays in task manager as an exe (let's call it foo.exe). I know that the…
Mike B
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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 Configuration > Policies > Software Settings I…
Jonathon Anderson
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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 in Chromes debugger that the request is a POST.…
RTF
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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 currently. I want to start new couple of memcache…
Débora
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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 determine which Java version is needed for each of the…
Kristof Tak
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iDRAC6 JViewer Unusable

I'm getting the following error when trying to launch the Virtual Console, but the Virtual Console Preview works fine (it displays a small preview about once a second). I've confirmed that my M610 DRAC has the latest firmware (3.60 build 3), that…
Hamy
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SNMP query - operation not permitted

I am working on API that reads a lot of data via SNMP (routes, interfaces, QoS policies, etc...). Lately, I have experienced a random error stating: Operation not permitted Now, I use SNMP4J as core library and cannot really pinpoint the source of…
Jovan Perovic
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Java and /etc/resolv.conf DNS server failover

Executive Summary Does Java query the next resolv.conf name server entry if the first one fails or times out? What is the default timeout at which Java will consider a resolver "down"? Details In /etc/resolv.conf, in most sites, there are multiple…
Friedrich 'Fred' Clausen
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your security settings have blocked a self-signed application from running

I'm trying to use Integrated Lights-Out 2 (aka iLO)'s Virtual Media (which is Java based applet) and I'm getting following error(s): Application Blocked by Security Settings Your security settings have blocked a self-signed application from…
alexus
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Performance problems when running Java desktop applications on Citrix Metaframe

We have a desktop Java application running within a Citrix Metaframe server farm and the performance, specially while starting up the app, is very unreliable. Sometimes it takes 15 seconds and sometimes it takes over a minute. It's really…
Demetrius Nunes
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CPU/JVM/JBoss 7 slows down over time

I'm experiencing performance slow down on JBoss 7.1.1 Final. I wrote simple program that demostrates this behavior. I generate an array of 100,000 of random integers and run bubble sort on it. @Model public class PerformanceTest { …
lukas
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