VB调用Oracle返回数据集

　　PL/SQL 代码:
　　CREATE OR REPLACE PACKAGE "PKG_TEST" AS
　　TYPE myrcType IS REF CURSOR;
　　FUNCTION get(strbarcode VARCHAR) RETURN myrcType;
　　END pkg_test;
　　
　　CREATE OR REPLACE PACKAGE BODY "PKG_TEST" AS
　　FUNCTION get(strbarcode IN VARCHAR) RETURN myrcType IS
　　rc myrcType;
　　BEGIN
　　OPEN rc FOR strbarcode;
　　RETURN rc;
　　END get;
　　END pkg_test;
　　
　　VB 代码:
　　Private Sub Command1_Click()
　　On Error GoTo cursorErr:
　　Dim cnn As New ADODB.Connection
　　Dim rst As New ADODB.Recordset
　　Dim cmd As New ADODB.Command
　　
　　cnn.ConnectionString = "Provider=OraOLEDB.Oracle.1;Password=tiger;Persist Security Info=True;User ID=scott;Data Source=oraAny;Extended Properties=PLSQLRSet=1"
　　cnn.Open
　　
　　With cmd
　　.ActiveConnection = cnn
　　.CommandType = adCmdText
　　.CommandText = "{CALL scott.pkg_test.get(?)}"
　　.Parameters.Append .CreateParameter("strBarCode", adVarChar, adParamInput, 100, "SELECT * FROM TAB")
　　End With
　　
　　rst.CursorType = adOpenStatic
　　rst.LockType = adLockReadOnly
　　Set rst.Source = cmd
　　rst.Open
　　
　　MsgBox rst.RecordCount
　　
　　Set rst = Nothing
　　Set cmd = Nothing
　　Exit Sub
　　
　　cursorErr:
　　Set cmd = Nothing
　　Set rst1 = Nothing
　　MsgBox Err.Description
　　End Sub