Solution : https://service.sap.com/sap/support/notes/201874 (SAP Service marketplace login required)
Key words : 
chronological order date      topic      short description----------------------------------------------------------------------19/apr/05  iii        note 3807 replaces note 16951, cd $oracle_home/dbs      cp /usr/sap/<sapsid>/sys/exe/run/sapdba_role, directory    /general/r3server/patches/rel46d/nt/i386/ora/place, 6d 64-bit kernel tousr/sap/<sid>/sys/exe/run, ---------------------< d030326/d022030 11/apr/00 >------------------------changed---------< d019132 26/mai/00 >--------------------------------changed---------< d019132 14/aug/00 >-----<, 6d 64 bit kernel termination'sql error 1438 performing ins, 6d 64 bit kernelin usr/sap/put/exe, edit script \usr\sap\put\bin\oragetnls, x19/jul/00    iii      create/update sapdba role, -point'create/update sapdba role' applies
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