Solution : https://service.sap.com/sap/support/notes/1072161 (SAP Service marketplace login required)
Key words : 
------------------ <updated d031901 sep/22/06 > --------------------------------------------- < d023890 nov/16/05 > ---------------------------include equivalent support package level, prepare phases---------------------< i024101 29/aug/05 >-----------------------------phase detect_start_release_components failsthe phase detect_start_release_components fails, sap nw 2004s db2 udb ux/win, sap nw 2004s ms sql server, sap nw 2004s db2 udb os/390, j2ee engine restart phasethis problem occurs, include equivalent support package level, -----------------------< d031901 nov/02/05 >---------------------------free space requirements, start_j2ee_ep phasethe bootstrap process fails, undeploy_applications phasethe undeploy_applications phase fails
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