How to increase memory usage for RM

Hi all,

Need Help
In my system i have 3GB RAM. But while the process executing in RapidMiner, in system monitor it is showing only 800MB as avilable.
In past I used 2GB, at the time also it shown 800 MB only.
I need more memory for my process. So How can I make maximum utilization of RAM for my RapidMiner procss.?

Please help me

Thank you

Yours
Anki