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Editorial Team
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Asked: 2026-06-14T18:33:46+00:00

I am running a makefile and after a while I get the following error:

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I am running a makefile and after a while I get the following error:

 java.lang.OutOfMemoryError

I am wondering whether there is a command that allows me to increase
the Java Heap Space. I dont want to change the makefile itself, so I need
some kind of “global” command that allows me to reset the Java Heap Space.

Many thanks,
Patrick

EDIT: Thanks for your answers. But I am looking for a more global command, that
allows me to specify to set the Heap space once and for all like:

SET JAVA_HEAP_SPACE = 5GB

Thanks

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1 Answer

  1. Editorial Team

    • You can set java heap space from command line: java -Xmx1600m program Now your heap space is 1600 MB.(Assuming your hardware can already afford 1600MB.)

    • For Windows platforms, you can set it from Java Runtime Environment
      Settings       as well. Follow Control Panel => Programs => Java. Navigate to Java tab. View Java Runtime Environment Settings. Add -Xmx1600m to Runtime Parameters. Save and go on.

    • For Linux platforms, you can launch Control Panel and edit runtime parameters. It can be run from something like /usr/j2se/jre/bin/ControlPanel. Find your own directory. Read here please: http://docs.oracle.com/javase/7/docs/technotes/guides/deployment/deployment-guide/jcp.html

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