[oXygen-user] Out of memory problem

[Eliot Kimber]

On 3/5/09 12:15 PM, "Barton Wright" <> wrote:

> By the way, if you're using 32-bit Vista, you only have available about 3.0 to
> 3.5 GB of RAM of the 4.0 GB installed, depending on your hardware
> configuration. This is not a Vista or Windows limitation: 32-bit versions of
> OS X and Linux are also limited to 3.0-3.5 GB of RAM on Intel machines with 4
> GB installed. The reason why is a long story, so let's call it a hardware
> limitation. 

In addition, JVMs running on 32-bit OSes are limited to about 1.5 to 2 Gig
of heap regardless of amount of RAM installed. The exact amount varies based
on OS and other processes running, but for Windows is typically about 1.2
Gig. 

64-bit OSes allow essentially unlimited heap space (at least 6Gig or more).

Cheers,

Eliot

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