InterMine can be rather memory-intensive, so you will probably need to set memory options for Java. To do this, set the environment variable ANT_OPTS to pass in to Java, by placing the following line in your ~/.bashrc file:
$ export ANT_OPTS="-server -XX:MaxPermSize=256M -Xmx1700m -XX:+UseParallelGC -Xms1700m -XX:SoftRefLRUPolicyMSPerMB=1 -XX:MaxHeapFreeRatio=99"
Run . ~/.bashrc to use this value in the current session.
You should change the -Xmx and -Xms values if you have very little or very much RAM in your computer.
Increase the MaxPermSize setting if you get this error java.lang.OutOfMemoryError: PermGen space