Solution : https://service.sap.com/sap/support/notes/383325 (SAP Service marketplace login required)
Key words : 
additional key words business information warehouse, additional secondary bitmap index, return/enter key, abap data dictionary, current setup ofd, delete database index, master data table, create parameter values, current database parameters, create index
Related Notes : 
       
| 1013912 | FAQ: Oracle BW performance | 
| 402469 | Additional indexes on Master Data Tables | 
| 389529 | NORMAL instead of BITMAP indexes on E fact table |