Solution : https://service.sap.com/sap/support/notes/870863 (SAP Service marketplace login required)
Key words : 
step key nw_export ind ind ind ind 0 0 nw_java_export_dialog ind ind ind ind 4 0 nw_java_export_db ind ind ind ind 3 0 exportj2eedatabase, jload procedures2  maxdb-specific procedure3  ms sql server-specific procedure4  oracle-specific procedure5  ibm db2 udb, choose system administration -> system configuration -> knowledge management -> content management -> repository managers -> file system repository 3, choosingsap netweaver 2004s/business suite application 2005 --> lifecycle management --> system copy --> ibm db2 udb, 3 ms sql server-specific procedure 4 oracle-specific procedure -------------------------<d020904, 00 32/64-bit _<bit>/dbindep                    prepexpdb6nw04s patch #1to run sapinst, lifecyle management -> system copy -> <db type> -> target system -> distributed system -> based, <export dump directory>/java/db/<dbtype>24/oct/05    1        abap system copy/unix, eserver iseries-specific procedure7  ibm db2 udb, eserver iseries-specific procedure 7 ibm db2 udb
Related Notes : 
       
| 1433781 | DB6: Unchanging tablespace names during system copy | 
| 1177833 | DB6: Specific R3szchk patches - overview | 
| 996263 | Missing P indexes in E and F fact tables after migration | 
| 966752 | Java system copy problems with the Java Migration Toolkit | 
| 941635 | System copy with MaxDB 7.6: Additional information | 
| 937362 | Java System Copy update list of special db table handling | 
| 936441 | Oracle settings for R3load based system copy | 
| 928474 | Error when exporting/importing the DDLOG package | 
| 904245 | SAPinst: Error in step "unpackSDMKITJAR" | 
| 903441 | System Copy of SAP Web AS 6.40 and 7.00 J2EE with LAC-WPS | 
| 886103 | System Landscape Copy for SAP SCM | 
| 884452 | Remote export of Java stack | 
| 883859 | Analyzing problems with KM Content Exchange Service (ICE) | 
| 883533 | -2003 output columns too long. | 
| 883286 | SAPinst: Error in step "enableUsageTypes" for ERP 2005 | 
| 831812 | Config Tool shows incorrect parameters after System Copy |