Solution : https://service.sap.com/sap/support/notes/663258 (SAP Service marketplace login required)
Key words : 
raw/lraw/varc fields- improved handling, phase pscrgen_drop_shd_table resolved- authorization problem, variables dbs_db2_ssid & dbs_db2_schema- length, high-availability systems- fix, db2 connect user resolved640-2, ddic transport- additional dialog, phase spacechk_ini- additional list, addlible <r3uplib>        r3up upgdir, sap kernel directory, quick link /patches
Related Notes : 
       
| 797995 | SAP Bank Analyzer 4.0 add-on: Upgrading to SAP NetWeaver04 | 
| 788623 | Additions to upgrade on SAP SRM Server 5.0 SR1 | 
| 788218 | Add. info. on upgrading to SAP ERP Central Component 5.0 SR1 | 
| 775047 | Add. info. on upgrading to SAP Web AS 6.40 SR1 | 
| 747622 | Active components in the NetWeaver ABAP stack | 
| 718455 | SEM-BW 400 and FINBASIS 300: Upgrade to NetWeaver 04 | 
| 689574 | Add. info. on upgrading to SAP ERP Central Component 5.00 | 
| 669656 | Additional info about upgrade to SAP Web AS 6.40 MaxDB | 
| 663240 | Repairs for upgrade to Basis 640 | 
| 662191 | DB6: Additions to upgrade (based) on SAP Web AS 6.40 | 
| 661640 | Add. info. on upgrading to SAP Web AS 6.40 | 
| 661252 | DB2-z/OS: Additions upgrade to Basis 6.40 | 
| 517731 | Corrections for the upgrade to systems with Basis 620 |