Solution : https://service.sap.com/sap/support/notes/1656654 (SAP Service marketplace login required)
Key words : 
sap bundle patch file sxd_<release>_<date>_<platform>, exadata bundle patch file exa_<release>_<platform>, sbp patch history bugsfixed_<data>_<platform>, 1 exadata patch oracle release exadata release date exadata, exadata oracle release sbp release date sbp, sbp readme readme_<date>_<platform>, download oracle database patches - sap bundle patches, exadata storage server 11g release 2, 4 change history 12 april 2012sxd_112031_201204 released, /oracle-downloaddatabase patches -> oracle -> oracle 11
Related Notes : 
       
| 1693680 | Running SAP Software on Oracle SPARC SuperCluster | 
| 1677978 | Administration of mixed SAP/Non-SAP Environments on Exadata | 
| 1656191 | Optimizer merge fix for Oracle 11.2.0.3 | 
| 1636936 | 11g Wrong results with star_transformation_enabled = true | 
| 1621425 | 11g Wrong results with Temp Table Transformation | 
| 1616131 | Oracle 11g: ORA-600/corruption possible during shutdown RAC | 
| 1590515 | SAP Software and Oracle Exadata | 
| 1431800 | Oracle 11.2.0: Central Technical Note | 
| 1431798 | Oracle 11.2.0: Database Parameter Settings | 
| 1431796 | Oracle 11.2.0: Troubleshooting the Software Installation |