Solution : https://service.sap.com/sap/support/notes/31496 (SAP Service marketplace login required)
Key words : 
sapkh45b35   sapkb46b22   sapkb46c12   sapkb46d04in release 4, sapkh45b31   sapkb46b17   sapkb46c08   sapkb46d03to, additional key words scc0, database product supports 'point-, prerequisites handling error solution, delivery class 'l', copy large clients, comparison tool' choose, sap standard programs, local settings stored
Related Notes : 
       
| 557132 | CC-TOPIC: Remote client copy | 
| 489690 | CC INFO: Copying large production clients | 
| 434645 | Point-in-time recovery: What must I be aware of? | 
| 365481 | Block corruptions | 
| 304605 | SAP query: Queries missing after client copy | 
| 208919 | CC-INFO: Performance as of Release 4.6 | 
| 180949 | CC-INFO: Change documents for a client copy | 
| 116787 | CC-TOPIC: Remote client copy | 
| 96732 | CC-INFO: DB2/390 - client copy is very slow | 
| 67205 | CC-INFO: Copying large and productive clients | 
| 31557 | The Multiple-Client concept of mySAP.com Solutions - Short O |