Solution : https://service.sap.com/sap/support/notes/358921 (SAP Service marketplace login required)
Key words : 
sap/oracle customer systems, note 124361- customer relationship management, bw based sem-bcs, strategic enterprise management, load-related tuning, database works correctly, - oracle database parameterization, standard recommendations listed, oracle performance questions, oracle database parameters
Related Notes : 
       
| 358917 | Oracle DB parameterization for CRM and BBP | 
| 180605 | Oracle database parameter settings for BW | 
| 124361 | Oracle parameterization (R/3 >= 4.x, Oracle 8.x/9.x) |