Build Failed java.lang.OutOfMemoryError: Java heap space

Question

I am facing this issue while building my build.xml.

BUILD FAILED
java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2786)
            


        

Answer 1

(For < Java 8, permgen doesn't apply to Java 8 and up)

For benefit of those who got a similar trace with the word "PermGen" in the Error message,

java.lang.OutOfMemoryError: PermGen space

Increasing the perm-gean space in ANT_OPTS (preferably, though not necessarily along with the Max heap size) should solve the issue

example

export ANT_OPTS="-Xmx2g -XX:MaxPermSize=512m"

Adjust the numbers as per your your need.

Cheers!

Answer 2

It sounds like you need to launch your JVM with a larger memory limit. Try something like (if you're using Bourne shell):

export ANT_OPTS=-Xmx1g
ant

or, if you use cmd under Windows:

set ANT_OPTS=-Xmx1g
ant

Above, the 1g means 1 GB. You can tweak that to whatever you like; for example, if you want to use 1.5 GB, you can use -Xmx1536m.

Answer 3

If 'javac' task is used with fork option then , javac will run in his own process and memory should be directly assigned to the javac using 'memoryinitialsize' and 'memorymaximumsize':

javac   srcdir="${src}"
            destdir="${classes}"
            source="1.6"
            debug="true"
            fork="true"
            deprecation="off"
            memoryinitialsize="512m"
            memorymaximumsize="1024m"

Answer 4

You need to set ANT_OPTS to next higher level in dx.bat file.which is located \build-tools\versions\dx.bat. set defaultXmx=-Xmx2048M I set it to 2GB.