How to increase jvm memory

Question

I want to alter (increase) java memory limit (JRE on windows pc). I fount following commands everywhere:

-Xms set initial Java heap size

-Xmx set maximum Java heap size

for example -Xmx1024m.

But my Question is where! do I have to enter this command. Sorry for this beginner question. Normally I do not have any contact to java.

those are parameters that you pass in the command line when you start the app — ΦXocę 웃 Пepeúpa ツ, Jun 02 '17 at 08:55
Possible duplicate of [How to set the -Xmx when start running a jar file?](https://stackoverflow.com/questions/20149304/how-to-set-the-xmx-when-start-running-a-jar-file) — pablochan, Jun 02 '17 at 08:55
make sure to read this answer aswell ;-) https://stackoverflow.com/questions/20149304/how-to-set-the-xmx-when-start-running-a-jar-file/42207984#42207984 — aexellent, Jun 02 '17 at 09:01

gati sahu · Accepted Answer · 2017-06-02T09:03:34.657

4

If you are using eclipse and try to run standalone java then use vm argument section in run configuration tab .For tomcat or app server in setenv script file put

set JAVA_OPTS=-Xms1024m -Xmx1024m -XX:PermSize=64m -XX:MaxPermSize=384m

for executable jar

java -Xms1024m -Xmx1024m -jar FILENAME.jar

edited Jun 02 '17 at 09:03

answered Jun 02 '17 at 08:59

gati sahu

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I dont use eclipe. I have a complete java application on a server in my network which I execute with a double-click on the .jar file – Mr. K. O. Rolling Jun 02 '17 at 09:01

score 0 · Answer 2 · answered Jun 02 '17 at 08:57

0

Those are Arguments for the Virtual Machine that you pass in the command line when you start the app

example:

in the console doing:

java -Xms256m -Xmx1024m HelloWorld

or if you are in eclipse (or any other ide)

answered Jun 02 '17 at 08:57

ΦXocę 웃 Пepeúpa ツ

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How to increase jvm memory

2 Answers2