Solution : https://service.sap.com/sap/support/notes/106532 (SAP Service marketplace login required)
Key words : 
step_env=z_dbr3startenv_nt_ind          step_user=@sapntdomain@\@lower_sapsystemname@adm          step_userpassword=@osusersidadmpasswd_nt_ora=password@    2, topic areas arei/  important general informationii/  database installation problemsiii/ problems, individual install phaseiv/  post installation procedurev/   probrems, ii/  database installation problems iii/ problems, \\usr\sap\<sid>\sys\exe\run, database        [dbr3start_nt_]          action=          class=cexecute, 0b japanese language disc ga2, start importing japanese language data, terms japan japanese windows nt 4, individual install phase   phase
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