How to fix Java heap space error in Maven

2014, Mar 07    
So you want to build a maven project but you 're getting an error like this : java.lang.OutOfMemoryError: PermGen space.

What the output says is that you have to define a MAVEN_OPTS environment variable, where you can place your -Xmx and -XX:MaxPermSize memory parameters.

What are you staring at? Go for it!


  • Right click¬†on My Computer and select¬†Properties
  • Click Advanced System Settings¬†on the left
  • Go to the¬†Advanced¬†tab,¬†click¬†the¬†Environment Variables
  • Create a¬†New¬†user variable, under the name of¬†to MAVEN_OPTS and set the¬†Variable value¬†to what the error specified or whatever you need to get it build successfully.


  • Here's a sample configuration :