Solution : https://service.sap.com/sap/support/notes/64812 (SAP Service marketplace login required)
Key words : 
job=r3trans/<sid>ofr/nnnnn [dbdsqln 2599]           log bzy=> unexpected return code 8, db interface          2eetw000 ---- db call info ----          2eetw000 exec sql, dbs/db4/deferred_closefrom instance profile <sid>_dvebmgs<sid>, 0f debug library>'                  '/usr/sap/<sid>/sys/exe/dbg', directory /usr/sap/<sid>/sys/exe/dbg, 0f_debug_library_name>'             '/usr/sap/<sid>/sys/exe/dbg', table t5j40 occured          2eetw000 1 duplicate key error, '/qopt/<kernel cd label>/os400/as400/r3optc1', '/qopt/<kernel cd label>/os400/as400/r3dbgc1', / important general remarks-------------------------<d021890 30/sep/99>---------------------------mandatory note
Related Notes : 
       
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| 61915 | INST: AS/400 post-installation steps 3.0F | 
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| 53851 | AS/400: Upgrading application servers | 
| 53760 | AS/400: Procedure for journal receivers in upgrade | 
| 49701 | iSeries: Info and recommendations for kernel libraries (46D) | 
| 48632 | Additional Info: Upgrading to 3.0F | 
| 48007 | SAP Kernel 3.0x/3.1x DB2/400: Released operating systems |