Solution : https://service.sap.com/sap/support/notes/539376 (SAP Service marketplace login required)
Key words : 
relevant basis support package eliminate, attached advance corrections, client copy relies, relevant jobs, client copy, customizing copy, client deletion, symptom tables, deleted successfully, 0        0the table
Related Notes : 
       
| 448877 | CC-ERROR: Data loss on DB2/390 | 
| 206523 | CC-RELEASE: Client copy errors in 4.6C and 4.6D | 
| 161495 | CC-RELEASE: Error in client copy in 4.6A and 4.6B | 
| 96732 | CC-INFO: DB2/390 - client copy is very slow |