Upgrading RAM Issue

Hi here's my Specs:
8GB DDR3 Ram
PS: I have Java 7, I use this Command - java -Xms3072M -Xmx3072M -jar craftbukkit.jar -o true
PAUSE
To run my Bukkit Server, and it doesn't work, unless my Ram is at 1024, if it's at 3072, I get an error - "Error occurred during the initialization of VM, Could not reserve enough space for object heap, Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. C:\Users\Brian\Desktop\Bukkit\PAUSE, Press any key to continue . . . Help that has worked will result in an Admin Position on the Server

 

That means your server can't allocate that amount of RAM to your Java process.

How much RAM is available?

 

Are you running Java 64 bit? If not, you have a ram cap at 1.5GB roughly.

 

You need 64-bit java to run any java application with more than 1536MB of RAM allocated. I can tell you have a 64-bit system because you have 8 GB of total system RAM, so your computer is capable of installing 64-bit Java

 

We assume you have 64 bit operating system?
If you dont and are running a 32bit you have limited your RAM 4gb.
As said above you need a 64 bit Java (Which needs 64bit OS.) to run more than 1.5gb.

 

I have a 64 bit system.

I fixed it by Installing 64-bit java, my guess was it automatically installed 32-bit..
thanks alot though.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

If you have any more questions / errors feel free to post them and we will help you out

 

Thanks a lot