to make the question simple:

what is the counterpart of data adapter's fillschema for datareader because i need to use datatable's find method

Code:
....
comd.CommandType = CommandType.StoredProcedure
Using reader As OracleDataReader = comd.ExecuteReader()
Dim dt As New DataTable
dt.Load(reader)
Return dt
End Using ....

help will be appreciated!