Solution : https://service.sap.com/sap/support/notes/441663 (SAP Service marketplace login required)
Key words : 
permissions 'lock memory pages'               control panel -> administrative tools -> local security policy -> local policies               search, windows 2000 datacenter server#windows 2000 advanced serverwindows 2003 data center edition, terms 3gbawesgadb_block_bufferwindows 2000windows 2003 standard edition, 64gb data center version, 'lock pages, data center edition, os-users <sid>adm, oracle virtual address space, key \\hkey_local_machine\software\oracle\, normal process address space
Related Notes : 
       
| 931024 | FAQ: 64-bit platforms for Windows | 
| 789011 | FAQ: Oracle memory areas | 
| 743328 | Composite SAP note: ORA-27102 | 
| 502782 | Composite SAP Note ora-4030 |