Solution : https://service.sap.com/sap/support/notes/497413 (SAP Service marketplace login required)
Key words : 
sapm ebp instance installation 4      post installation 5      miscellaneous 1 pre installation ------------------------<d029035, solution contents   date     section   description_______________________________________________________________________30/sep/03     1      crm 3, \usr\sap\<sapsid>\sys\profile\<sapsid_instancename_ hostname>, 'enterprise buyer server installation'14/jan/02    2      ebp/oracl, database network configuration dialog24/jan/03     4      ebp, sapinst dialog 'database network configuration' displayed, file<sapmnt>/profile/<sapsid_instancename_ hostname>, sapdata file system requirements24/feb/03    2+3     oracle, file/sapmnt/<sapsid>/profile/<sapsid_instancename_hostname>, sapdata file system requirementsfile requirements
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