Solution : https://service.sap.com/sap/support/notes/156558 (SAP Service marketplace login required)
Key words : 
symptom ms sql server / 4, 6x solution, longer maintained, release information
Related Notes : 
       
| 1086956 | 46D_EX2 Kernels | 
| 318846 | Installing the 4.6D kernel in 4.6A/B/C SAP systems | 
| 209596 | Setting up Microsoft SQL Server 2000 | 
| 139945 | SAP Database Monitor for MS SQL Server | 
| 62988 | Service Packs for Microsoft SQL Server | 
| 19227 | Open newest saposcol |