Solution : https://service.sap.com/sap/support/notes/154919 (SAP Service marketplace login required)
Key words : 
additional key words rollback segment, rollback segment size, long-running transaction, rollback segments, rollback area, large size, symptom deletion, prerequisites deleting, large request, fact table
Related Notes : 
       
| 156319 | Collective note performance BW 1.2B |