Sorry the note should be valid from 7.5 and higher releases so seems to be ok.
But it seems to me there is an error when it says ;
.....
DBA user: SAP<SID> (SAP BASIS 6.10 or higher)
xuser -U DEFAULT -u SAP<SID>,<password> -d <database_name> -n <database_server> -S SAPR3 -t 0 -I 0 set
There should not be SAP<SID> in place of SAPR3 ?
regards