im doing a stored procedure in vb.net 2005 using oracle(10g express edition)with the following commands.

        objCommand.CommandText = "bookpackagetest.usp_selectbook"
        objCommand.CommandType = CommandType.StoredProcedure
        objCommand.Parameters.Add("inSearchStr", OracleType.VarChar, searchText.Length).Value = searchText.ToString
        objCommand.Parameters.Add("results_cursor", OracleType.Cursor)
        objCommand.Parameters.Item(0).Direction = ParameterDirection.Output
        objDataAdapter = New OracleDataAdapter(objCommand)
        objDataAdapter.SelectCommand = objCommand
        objDataReaderBook = objCommand.ExecuteReader

however, i encountered the following error. pls help me find my mistake. thank you so much!

      Message="ORA-06550: line 1, column 7:
      PLS-00306: wrong number or types of arguments in call to 'USP_SELECTBOOK'
      ORA-06550: line 1, column 7:
      PL/SQL: Statement ignored"

create or replace package body bookpackagetest
as
   procedure usp_selectbook (inSearchStr IN VARCHAR,results_cursor out cursor_type)
as
  begin
    open results_cursor for
       select booklist.isbn,booklist.title,authors.author,bookli st.publisher,booklist.edition,
              booklist.purchasedate,booklist.copyright,booklist. category,booklist.copy
       from booklist left outer join authors on booklist.author_id=authors.author_id
            where upper(booklist.title) like inSearchStr;
  end;
end;

ariel