Solution : https://service.sap.com/sap/support/notes/1146480 (SAP Service marketplace login required)
Key words :
usecl_i18n_dbs_uc_pua_sjdup remap uc sjis pua charactersthe search, called ibm vendor specific characters, called nec vendor specific characters, unicode utf-8 produces incorrect results, found round-trip pua characters, reading japanese text data, japanese shift-jis characters, round-trip reasons, replace sjis duplicatesor, small empty box
Related Notes :
1319517 | Unicode Collection Note |
846872 | Database Scan Tool |
846695 |