Solution : https://service.sap.com/sap/support/notes/424243 (SAP Service marketplace login required)
Key words : 
additional key words cbo, prerequisites advance development solution, cost-based optimiser, tax table dbstatc, partitioned tables, specifically excluded, active flag, collecting patches, brconnect 6, statistics
Related Notes : 
       
| 744483 | Changes in collection of statistics in BRCONNECT 6.40 | 
| 403706 | Corrections in BR*Tools Version 6.10 | 
| 403704 | BRCONNECT - Enhanced function for Oracle DBA |