Solution : https://service.sap.com/sap/support/notes/1569145 (SAP Service marketplace login required)
Key words : 
import serverimport clientsmaster data serverdata management clientsjava apiportal content  bp mdm application 7, master data management, 1  bp mdm technology 7, prerequisites release note solution, mdm patching process, mdm component, mdm components, 1 sp06 release 7, sap note 1471203, sap note #1345858
Related Notes : 
       
| 1570514 | Memory leak in MDS after importing large files | 
| 1569983 | Transport error on add/delete of attribute calculated fields | 
| 1569362 | Path for the Blobcache folder parsed incorrectly on Unix OS | 
| 1569275 | "One or more records failed a validation" error in MDM iView | 
| 1569232 | Cannot open the key mapping option while using two screens | 
| 1569181 | MDM Tuple field column width is small in WD Item Details co. | 
| 1568701 | MDS can crash in workflow when LDAP users are not present | 
| 1568315 | Inner leaf node is being added automatically via import | 
| 1566295 | MDM Server (MDS) crashed when Workflow was in use | 
| 1566272 | Records can be added to a workflow job in a slave repository |