Solution : https://service.sap.com/sap/support/notes/972262 (SAP Service marketplace login required)
Key words : 
step key nw_uninstall ind ind ind ind 0 0 nw_system_uninstall ind ind ind ind 30 nw_system_uninstall_users ind ind ind ind 5 0 removesystemusers wasexecuted, script nw_abap_prepare ind ind ind ind, /usr/sap/qo1/jc00/j2ee/cluster/server0/log/defaulttrace, /instguides -> sap business suite applications -> sap scm -> sap scm servercaution, rename /usr/sap/s14/sys/profile/s14_dvebmgs20_zsi-aix693p2_d20081204, /usr/sap/<sapsid>/<instance>/j2ee/cluster/server0/log/defaulttrace, sap netweaver 2004s sps 11  java based software  components dvd, sap netweaver 2004s sps 12  java basedsoftware  components dvd, sap nw 2004s sps12 dvdmar/13/09   4        restarting sapinst aborts, /usr/sap/s14/sys/profile/s14_dvebmgs20_zsi-aix693p2
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