Solution : https://service.sap.com/sap/support/notes/627034 (SAP Service marketplace login required)
Key words : 
<dbm password>                  param_startsession                  param_put optim_or_distinct 50                  param_checkall                  param_commitsession               activate, support parameter                   -> extended               change parameter optim_or_distinct, configuration -> parameter                   -> show extended, choosing stop - offline  restart, component bc-db-sdb, database manager gui handbook, kernel parameter optim_or_distinct, symptom database crashes, sap service marketplace, sap db version 7
Related Notes : 
       
| 620218 | Installing SAP DB Version 7.3.00 B33 or higher (BW, CS) | 
| 530567 | Importing SAP DB Version 7.3.00 B33 or higher (OLTP) |