Solution : https://service.sap.com/sap/support/notes/1468615 (SAP Service marketplace login required)
Key words : 
upgradechronological summary======================date          topic                    entry----------------------------------------------, /                newnov/09/2010    ii/              newnov/09/2010  iii/                new29/06/2011, minimum dbsl patch level, /sappo/v_ppocmpl solution topics, virtual tablesiv/ source release 7, database ibm db2, db2 luw version 9, buffered insert behavior, shadow systemthe reason, corrupt jar files
Related Notes : 
       
| 1606532 | DB6: DB2 might not report DUPREC on INSERT in DPF database | 
| 1462243 | DB2 9.7 FP1: START_SHD_J2EE_RM of PI 7.1 EHP1 upgrade fails | 
| 1376439 | DB6: Views with status 'N' are displayed as missing |