Solution : https://service.sap.com/sap/support/notes/914020 (SAP Service marketplace login required)
Key words :
terms x86_64 amd64 x64 reason, database-specific upgrade steps required, directories \usr\sap\put\preexe, \usr\sap\put\pretools, extracted executables tp, sap source release 3, sap kernel release 4, sap kernel release 640, sap system based, sap release 3
Related Notes :
| 960769 | Windows: Migration from 32-bit to 64-bit (x86_64) |
| 862789 | Upgrading SAP systems <=4.6 on x86_64 on Windows |