we can connect to oracle database throught conntection 
string....
code for connecting to db

set con=createobject("ADODB.Connection")
set rs=createobject("ADODB.Recordset");
con.ConnectionString="DRIVER={oracle in orahome92};SERVER=
(servername);UID=(username);PWD=(password);DBQ=dbserver"
con.open
query="select * from tablename"
rs.open query,con
while not rs.EOF
i=0;
msgbox(rs(i))
i++
rs.move next
wend
rs.close
con.close
set rs=nothing
set con=nothing

any coments always welcome

by odbc connection using DSN

set con=createobject("ADODB.Connection")
set rs=createobject("ADODB.Resultset");
con.open"provider=oraoledb.1;server=
(servername);UID=(username);PWD=(password);DB=dbserver"
rs.open query,con
Do while not rs.EOF
i=0;
msgbox(rs(i))
i++
rs.move next
loop
rs.close
con.close
set rs=nothing
set con=nothing