Restart java linux

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I have two java application running on my linux centos system. How can i perform these operation from my second application? I found this articles which get me somewhat closer. It doesnt giving me any output by when same command is executed by shell prompt ps -ef grep eSocketServer. Inside your first appjust get the process id using the following statement which will return you the PID. Write this PID to a file and have the controller read it from the file. STOP can now be implemented using the kill command in linux Run it the same way you ran the java -jar commmand.

Learn more. Asked 7 years, 1 month ago. Active 7 years, 1 month ago. Viewed 5k times. Code :- eSocketServer. Shaggy Shaggy 3, 20 20 gold badges 77 77 silver badges bronze badges. Why downvote? Active Oldest Votes. Aneesh Aneesh 1, 1 1 gold badge 19 19 silver badges 33 33 bronze badges. Depending on your exact implementation requirementthe approach may change.

One I suggested is just one of the many approaches. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Ben answers his first question on Stack Overflow. The Overflow Bugs vs. Featured on Meta. Responding to the Lavender Letter and commitments moving forward. Linked Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Or this is not possible. The idea is that I added tool. The Java process runs on demand as and when you want to run it. It's not a daemon. You need to stop the Java process manually kill it if it doesn't end gracefully.

Learn more. Asked 7 years, 8 months ago. Active 7 years, 8 months ago. Viewed 90k times. Is there something like: java -restart Or this is not possible. Instead several independent instances do run. I think your issue like this stackoverflow. Just got into case when I run java profiler Visual VM 1. Then I go to processes and try to kill "Javaw" and it helped to remove that process Active Oldest Votes. Swapnil Swapnil 7, 4 4 gold badges 33 33 silver badges 56 56 bronze badges.

As you start the JVM, it should load that. You wouldn't need to worry about system libraries. You need to add your own jars if any to the classpath when you start the Java process. Have a look at stackoverflow.

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The Overflow Bugs vs. Featured on Meta. Responding to the Lavender Letter and commitments moving forward. Linked Today I'll talk about a famous problem : restarting a Java application.

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It is especially useful when changing the language of a GUI application, so that we need to restart it to reload the internationalized messages in the new language. Some look and feel also require to relaunch the application to be properly applied. This indeed basically works, but this answer that does not convince me for several reasons :.

For example if the application save some properties when closing, commit some stuffs etc. Overall, something that works fine for some test, sandbox use, but not a generic and elegant way in my humble opinion. Let's start by looking at each point and find a way to answer them in an elegant way let's say the most elegant way that I found. Concerning the program arguments, the Java property sun. The simple case is when the application is launched from a jar. The jar name is given by a mainCommand[0], and it is in the current path, so we just have to append the application parameters mainCommand[ We'll suppose here that the Manifest of the jar is well done, and we don't need to specify the main nor the classpath.

Second case : when the application is launched from a class. In this case, we'll specify the class path and the main class :. To do such a trick, we'll just execute the Runtime. This way, we'll be sure that everything will be properly clean up before creating the new application instance. Run the runBeforeRestart that contains some custom code that we want to be executed before restarting the application :.

And finally, call the System.

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And we're done. Here is our generic method :. Thanks for visiting DZone today. Edit Profile. Sign Out View Profile. Over a million developers have joined DZone. Programmatically Restart a Java Application. Like 2. Join the DZone community and get the full member experience. Join For Free.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Is there any way to reboot the JVM? As in don't actually exit, but close and reload all classes, and run main from the top?

Your best bet is probably to run the java interpreter within a loop, and just exit.

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For example:. Within the java program, you can use System. You can build your own class loader and load all your classes except a bootstrap with it. Then, when you want to "reboot", make sure you do the following:.

restart java linux

Note though, static class members and JVM "global" objects ones that are accessed by a GC root that isn't under your control will stay. For example, Locale. Since the Locale class is loaded by the system class loader, it will not be "restarted". That means that the old Locale object that was used in Locale.

Yet another route to take is instrumentation of classes. However, since I know little of it, I'm hesitant to offer advice.

restart java linux

Explanation about hot deploy with some examples. If you're working in an application server, they typically come with built-in hot deployment mechanisms that'll reload all classes in your application web app, enterprise app when you redeploy it. Otherwise, you'll have to look into commercial solutions. Behind the scenes I am sure they are using a different class loader.

Well, I currently have this, it works perfectly, and completely OS-independent. The little code pieces are all from stackoverflow except RunnableWithObject and restartMinecraft :.

It's easy in JavaX: You can use the standard functions nohupJavax or restart. Learn more. Ask Question. Asked 11 years, 11 months ago. Active 4 years, 2 months ago. Viewed 76k times. Alex Alex 3, 5 5 gold badges 31 31 silver badges 37 37 bronze badges.Two of our java agents are having instrumentation issues. I see connection timed out info in logs.

Attachments: Up to 10 attachments including images can be used with a maximum of Answer by James K. This means that the only way to restart the agent is to restart the application. This is the only option to restore instrumentation if the agents could not reach the collector at startup.

When they say instrumentation not available these agents do they still report any data or they skip data? If you see the message "instrumentation not available" then you will not receive any transactional data from that JVM. A JVM restart is your only option. Thanks Joseph. In this case we will request to restart application and hopefully it should fix the issue. Answer by Joe H. It might be a good idea to inspect the agent logs to determine the exact reason that it was not able to instrument the JVM last startup.

Perhaps your collector is not located in an appropriate location for this agent?

restart java linux

Let us know what messages exist in the log. Check updated libraries and support added in the latest NAM service pack. Answers Answers and Comments. Hi, Two of our java agents are having instrumentation issues. Can I restart manually java agent or JVM from that linux box? Thanks, Rajani. People who like this.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It only takes a minute to sign up.

I am running my runnable jar in linux machine machineA as shown below. In the runnable Jar, I have a java program which sends email to me every 15 mniutes. As soon as I start my abc.

How do you restart Java, from the Desktop.

I am using Scheduler in my java program which is a thread which wakes up every 15 minutes and send me an email. Now everything is working fine. Suppose machineA got restarted for some reason or abc. So I decided to use upstart feature in Ubunutu as I am running Ubuntu I have my abc. Now I started my java program like this one time. Now after some time, I did ps aux grep java again and I saw like this - Meaning multiple instances of my abc. This is what I am not able to understand why it happened?

My main aim is to restart abc.

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How do I achieve this? Is there anything wrong I am doing with upstart? That makes it fork into the background, Upstart thinks the process died, then spawns a new one. Just have the exec line without the ampersand. Sign up to join this community. The best answers are voted up and rise to the top. How to restart my java program automatically if it gets killed? Ask Question. Asked 5 years, 9 months ago.

Active 2 years, 9 months ago.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It only takes a minute to sign up.

I was wondering what exactly the max perm gen size is, and more importantly, how can I restart Java via command line with this argument? I tried searching for how to restart Java, but there does not seem to be any documentation on how to do this via command line.

PermGen space is used for things that do not change or change often. Java classes. So often large, complex apps will need lots of PermGen space. Sign up to join this community. The best answers are voted up and rise to the top. How to restart Java with a specific argument? Ask Question. Asked 6 years, 8 months ago.

restart java linux

Active 6 years, 8 months ago. Viewed 6k times. While running my Minecraft server, I noticed the following message outputted in the console. Active Oldest Votes. Chris Snow Chris Snow 3, 4 4 gold badges 19 19 silver badges 30 30 bronze badges.

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