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过程参数中的Oracle UDT绑定无效

user-defined-types oracle-xe odp.net c#

5

Omar · 技术社区 · 13 年前

我正试图调用一个采用自定义数据类型 table of numbers 作为参数之一。

以下是类型的定义:

create type num_list as table of number;

以及程序的定义:

create or replace procedure my_procedure
    (listofnumbers num_list,
                  v_value char)
is
begin

  update my_table
     set my_column = v_value
   where my_row_id in (select column_value
                         from table(listofnumbers));

end;

使用odp.net和c,我声明如下:

var row_ids = new int[] { 1, 2 };

using (var oracleConn = new Oracle.DataAccess.Client.OracleConnection(myConnectionString))
{
    oracleConn.Open();
    var cmd = new Oracle.DataAccess.Client.OracleCommand("my_procedure", oracleConn);
    cmd.CommandType = CommandType.StoredProcedure;

    var param1 = new Oracle.DataAccess.Client.OracleParameter("listofnumbers", Oracle.DataAccess.Client.OracleDbType.Array, ParameterDirection.Input);
    param1.CollectionType = Oracle.DataAccess.Client.OracleCollectionType.PLSQLAssociativeArray;
    param1.UdtTypeName = "num_list";
    param1.Value = row_ids;
    cmd.Parameters.Add(param1);

    var param2 = new Oracle.DataAccess.Client.OracleParameter("v_value ", Oracle.DataAccess.Client.OracleDbType.Char, ParameterDirection.Input);
    param2.Value = "Y";
    cmd.Parameters.Add(param2);

    cmd.ExecuteNonQuery();
}

引发的异常说明:

无效的参数绑定参数姓名:号码列表

定义参数时缺少哪些属性?

1 回复 | 直到 10 年前

1

2

Stephen Drew 10 年前

http://developergeeks.com/article/35/working-with-user-defined-type-oracle-udt-and-custom-type-using-odp-net-11g

param1.Size = row_ids.Length;

TYPE t_stringlist IS TABLE OF VARCHAR2(4000);


            string[] values = new string[] { "AAA", "BBB" };

            OracleParameter parameter = new OracleParameter();
            parameter.Name = "my_param";
            parameter.CollectionType = OracleCollectionType.PLSQLAssociativeArray;
            parameter.OracleDbType = OracleDbType.Varchar2;
            parameter.ArrayBindSize = new int[values.Length];
            parameter.ArrayBindStatus = new OracleParameterStatus[values.Length];
            parameter.Size = values.Length;

            for (int i = 0; i < values.Length; ++i)
            {
                parameter.ArrayBindSize[i] = 4000;
                parameter.ArrayBindStatus[i] = OracleParameterStatus.Success;
            }

            parameter.Value = values;

http://download.oracle.com/docs/html/E15167_01/featUDTs.htm