Solution : https://service.sap.com/sap/support/notes/618818 (SAP Service marketplace login required)
Key words : 
oracle table monitoring, monitoring attribute, total runtime, considerably longer, large number, cluster tables, program error, patch level 66, patch level 102, downloading patches
Related Notes : 
       
| 514205 | Corrections in BR*Tools version 6.20 | 
| 403706 | Corrections in BR*Tools Version 6.10 |