Scala Could not reserve enough space for object heap

 [elena@localhost my-scalatra-web-app]$ ./sbt
Detected sbt version 0.12.3
Starting sbt: invoke with -help for other options
Downloading sbt launcher 0.12.3:
  From  http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/0.12.3/sbt-launch.jar
    To  ./.lib/0.12.3/sbt-launch.jar
Using /home/elena/.sbt/0.12.3 as sbt dir, -sbt-dir to override.
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Бла бла бла. Имеецца scala, но такая вот херня происходит при выполнении ./sbt

Как лечицца (нагуглено тут http://prassee.com/post/47002420907/tip-allocate-memory-for-sbt-through-java-options):

_JAVA_OPTIONS="-Xms512M -Xmx1024M -Xss1M -XX:+CMSClassUnloadingEnabled" sbt