Solution : https://service.sap.com/sap/support/notes/790877 (SAP Service marketplace login required)
Key words : 
/im<number>_<opsys>/sapinst/unix/<opsys>/nw04sr1/webas/abap/inf/nucto  /im<number>_<opsys>/sapinst/unix/<opsys>/nw04sr1/webas/copy/inf, /im< number>_<opsys>/sapinst/unix/< opsys>/nw04sr1/webas/copy/ada/im<number>_<opsys>/sapinst/unix/<opsys>/nw04sr1/webas/copy/db6, date     section   description -----------------------------------------------------------------------30 dec 04  2       java system copy----------------------------------------------------------------------- 1     general 2     pre-installation 30 dec 04 java system copysymptom, directory /im<number>_<opsys/sapinst/unix/<opsys>, contents 1     general2     pre-installation3     installation4     post-installationnote, -> system copy sap systems based, java system copy, sap web application server java 6, replaces existing installation master dvds, system copy functions
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