Development

Once in a while you will run into memory problems when using maven. Whether it is a java.lang.OutOfMemoryError: Java heap space or java.lang.OutOfMemoryError: PermGen space, these problems can be fixed by increasing the heap and/or permgen size. This can be done by setting some extra options in the MAVEN_OPTS environment variable as in the following example.

With these options the different memory settings can be tuned:

• -Xms512m: sets the initial heap size to 512 MB
• -Xmx1024m: sets the maximum heap size to 1 GB
• -XX:PermSize=256m: sets the initial PermGen size to 256 MB
• -XX:MaxPermSize=512m: sets the maximum PermGen size to 512 MB