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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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3 answers

Scripted install of Sun Java JDK on Ubuntu 9.04

We are trying to script the install of the sun jdk on Ubuntu 9.04 and have it automatically accept the license agreement. I have seen something around the net about creating a file that the package looks for, but none of them were complete. Does…
Matt Campbell
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Why does the Java VM process eat up more RAM then specified in -Xmx parameter?

I have multiple servers running CentOS 5.4 and only one application running on Java VM. I've configured the Java VM with the following arguments: java -Xmx4500M -server -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:NewSize=1024m …
evilpenguin
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Tracing slow Java I/O in Solaris 10

We have a Java application which is significantly slower in Solaris 10 server than in Windows PC. We have profiled (-Xprof) the application and observed that UnixFileSystem.getBooleanAttributes0 method consumes about 40% CPU time with native…
fglez
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JAVA_OPTS -XX:+PrintGCDetails affect on performance?

Does anyone know if the PrintGCDetails affects java performance much? I've been monitoring our java garbage collecting on a staging server with the same setup as the production server. I assumed it was safe to say that I shouldn't have this…
brad
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Stopping Java from showing Update notice to all terminalserver users

on our terminal server all users have minimal (i.e. default) permissions. None are local administrators on that machine. Still Java Runtime displays message to every user that an update is available. Clicking on the update asks for…
Frode Lillerud
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What port is the Websphere app server's admin app on?

I've started Websphere on my local box and I can't remember what port the admin app should be on. Any ideas?
jjujuma
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1 answer

Intermediate certificate not in keystore even though I added it

I was tasked to set up an ssl in a server, this server uses wildfly, so I have to make a keystore that contains all of the certificates that I got, the server certificate, the intermediate and the keyfile. First I chained up the server cert and the…
logax
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Can't start Java, error: Could not reserve enough space for object heap

I'm trying to get Solr up and running. At first I had the JDK.1.6 working fine, then tomcat running fine too. All of a sudden when trying to run Solr for the first time however I get the error message: [root@78 bin]# ./java -version Error occurred…
bluedaniel
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How to configure Wildfly to read environment variables

When porting an application from the Java application server GlassFish to Wildfly I noticed that applications in Wildfly report environment variables as empty, whereas GlassFish reports a value. The application code is the same; the command to…
Ryan
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How do you tell WHY Windows Firewall is blocking a program?

I have an environment that is running Windows Server 2012 R2 and runs a variety of Java based IBM applications. There is a group policy in place that blocks local Windows Firewall rules from being created, but due to a system process the rule is…
Grant C
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JRE fails to establish LDAPS connection with AD after RootCA cert imported to cacerts truststore

LDAPS is working through ldp.exe and through a number of other programs on windows and linux systems that do not appear to require the Root Cert. at all. Some programs which use JSSE fail to connect after importing the root and intermediate CA into…
Phatmandrake
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Where does Java save proxy details?

My question is as the title states really. But to give a bit more detail as to what I would like to know, basically we have a small group of users who wish to create small video tutorials to distribute on the net. They've found a website which…
manemawanna
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MultiCPU servers - which one can you suggest?

We want to install a couple of big servers for our customer to run Oracle on one and Java applications on another. Tired with clusters, replications, want to run everything on one big server. We probably need 24-32 cores, 64-96GB of RAM. As Oracle &…
disserman
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ActiveMQ with persistence in a database

Are any of you running ActiveMQ with persistence in a database? Even better, in an Oracle database? We're wanting to replace our current JMQ uses with ActiveMQ. The plan is to have two machines (one hot, one failover) that share an ActiveMQ queue,…
Bill Weiss
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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 Internet Explorer Enhanced Security…
Harry Johnston
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