How to increase the Java heap memory for Maven 2 on linux

java.lang.OutOfMemoryError: PermGen space (Maven/Jetty)

If you get an error OutOfMemory error while doing mvn site,  to solve this problem one needs to increase the memory available to JVM (i.e. to Maven -- which invokes Jetty)

Increasing memory by setting env variable

export MAVEN_OPTS="-Xmx1024m -Xms1024m -XX:PermSize=256m -XX:MaxPermSize=512m" Reference: http://vikashazrati.wordpress.com/2007/07/26/quicktip-how-to-increase-the-java-heap-memory-for-maven-2-on-linux/ https://wiki.openmrs.org/display/docs/Troubleshooting+Memory+Errors