How to prevent java.lang.OutOfMemoryError: PermGen space at Scala compilation?

Question

I have noticed a strange behavior of my scala compiler. It occasionally throws an OutOfMemoryError when compiling a class. Here\'s the error message:

[info]          


        

Answer 1

Originally using a command like:

java -jar /path/to/sbt-launch.jar test

I got first OutOfMemoryError: PermGen space which I solved using -XX:MaxPermSize, and then OutOfMemoryError: Java heap space, to which -Xmx was the remedy.

So in my case, a command like this worked:

java -XX:MaxPermSize=256M -Xmx2048M -jar /path/to/sbt-launch.jar test