Solution : https://service.sap.com/sap/support/notes/130140 (SAP Service marketplace login required)
Key words : 
400 shadow processes means 400 mb memory requirement, insufficenton operating system levels, 32-bit ms windows nt/2000, enterprise editionof windows nt 4, maximum 'process address space', sincethe oracle shadow process, 3 gb process-local memory, windows 2003 server enterprise edition, oracle error ora-4030 occurs, shadow processes/threadsif
Related Notes : 
       
| 789011 | FAQ: Oracle memory areas | 
| 502782 | Composite SAP Note ora-4030 | 
| 335230 | ORA-4030 with NT and Business Information Warehouse | 
| 142019 | 3GB Memory and Oracle 8 on Windows (NT or 2000) | 
| 123366 | Maximum addressable memory for the Oracle SGA | 
| 110172 | Windows: Transactions with large memory requirements | 
| 103747 | Performance: Parameter recommendations as of Release 4.0 | 
| 103374 | ORA-00600 [SKGMINVALID]/ORA-00600 [SKGMBUSY] | 
| 97497 | Memory Management Parameter (3.0/3.1) |