Configuring the heap size
Once you have Maven installed in your system, the very next step is to fine-tune it for an optimal performance. By default, the maximum heap allocation is 512 MB, which starts from 256 MB (-Xms256m to -Xmx512m). This default limit is not good enough to build a large, complex Java project, and it is recommended that you have at least 1024 MB of the maximum heap.
If you encounter java.lang.OutOfMemoryError at any point during a Maven build, then it is mostly due to a lack of memory. You can use the MAVEN_OPTS environment variable to set the maximum allowed heap size for Maven at a global level. The following command will set the heap size in any Unix-based operating system, including Linux and Mac OS X. Make sure that the ...
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