CODEWITHSUNDEEP
javavirtual-machine
mkn
mkn

Reputation: 13081

Can't start up: not enough memory with -Xmx30G

I get the error message "Can't start up: not enough memory" when I run my code with "java -Xmx30G ExampleCode".

This error does not happen when I don't specify the java virtual machine size. Does anyone have a clue why I get that error message when I set the virtual machine size? If -Xmx is smaller than 1G then it runs, if not then I got the mentioned error message.

Thanks in advance for any help!

And yes, there is enough RAM :) (72G available).

BTW, JavaHome is /opt/jre1.6.0_20

Upvotes: 3

Views: 8922

Answers (4)

Uberto
Uberto

Reputation: 2712

You need 64bit jvm to use more than 2/3Gb (depends on os version).

Upvotes: 1

JOTN
JOTN

Reputation: 6317

Make sure you're using the 64-bit JVM. I think the 32-bit memory limit is around 4GB of memory.

Upvotes: 1

Christoffer Hammarström
Christoffer Hammarström

Reputation: 27844

You're probably running 32 bit java, see http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit

Upvotes: 2

Jeff Storey
Jeff Storey

Reputation: 57192

The OS can impose a limit on how large a process can be. For example, in 32-bit windows, the limit is ~2GB, even if your machine has 4GB RAM. Check or OS settings, and be sure you are running a JVM where this would be allowed (i.e. if you're on a 64-bit system that supports this size process, be sure to run the 64-bit JVM)

Upvotes: 4

Related Questions