SAP 4.6c with 32 bit kernel and Windows 2003 EE 64 bit - memory issues?

Question

Dear Colleagues.
My apologies for this simple question. I would appreciate your assistance and expertise for this as I think I have confused myself and I would appreciate clarification.
Running an SAP 4.6c system on SAP Kernel 46D_EXT2 32-bit with Windows 2003 Enterprise Edition 64-bit and ORACLE 10.2 64 bit.
Could you confirm that there is still memory address space limitations due to the 32-bit SAP kernel?
It is the SAP Kernel that determines the addressable operating system limit for R/3 extended memory under Windows NT?
Do I still need to set the 3GB option on the system to allocate more than 2.5GB of SAP buffers and extended memory space?
I have taken a look at SAP Notes 110172 and 129813, but I just need clarification?
Thanking you in advance.
Kind Regards,
Alcatz

Answer 1

> Could you confirm that there is still memory address space limitations due to the 32-bit SAP kernel?
Yes.
>> It is the SAP Kernel that determines the addressable operating system limit for R/3 extended memory under Windows NT?
On a 64bit OS it is a bit different, effectively you can use 4 GB per workprocess.
> Do I still need to set the 3GB option on the system to allocate more than 2.5GB of SAP buffers and extended memory space?
No.
Markus