I asked this same question Cameron Purdy, CEO of Tangosol (maker of a leading Java cache product) this question during the TheServerSide this year.
His business is all about optimal use of the allocated heap space, and that

His recommendation was to use up to 512 MB of heap space to minimize more severe garbage collection pauses. I think that this article Java 5.0 JVM tuning <http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html> can help you answer what is the optimal use.

On 10/6/05, Caldarale, Charles R <[EMAIL PROTECTED]> wrote:

> From: Leon Rosenberg [mailto:[EMAIL PROTECTED]
> Subject: [OT] How much RAM can java use
> Does anyone know for sure how much RAM I can use with JAVA 1.4 or 1.5?

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