如何从 .NET 前端在 Oracle 中使用用户定义的数据类型参数执行 Oracle 存储过程

How to execute Oracle stored procedure with User Defined DataTypes Parameters in Oracle from .NET Front-End

我使用 Oracle 作为后端,使用 C# 作为前端。

Oracle包声明如下:

CREATE OR REPLACE PACKAGE SamplePackage IS

TYPE t_number IS TABLE OF NUMBER INDEX BY PLS_INTEGER;

PROCEDURE SampleProc(run_no IN t_number, Id IN t_number);

END;


CREATE OR REPLACE PACKAGE BODY SamplePackage IS

  PROCEDURE SampleProc(run_no IN t_number, Id IN t_number) IS

    l_cnt      NUMBER := 0;
  
  BEGIN
  
    FOR i IN 1 .. Id.count
    LOOP
    
      INSERT INTO SampleSchema.SampleTable
        (run_no,
         Id)
      VALUES
        (run_no(i),
         Id(i));
    
      -- commit every 1000 rows
      l_cnt := l_cnt + 1;
    
      IF (MOD(l_cnt,
              1000) = 0) THEN
        COMMIT;
      END IF;
    
    END LOOP;
    COMMIT;
  
  EXCEPTION
    WHEN OTHERS THEN
      raise_application_error(-20001,
                              'SamplePackage.SampleProc: ' || SQLERRM || dbms_utility.format_error_backtrace);
  END SampleProc;

END;

前端C#代码如下:

string ConnectionString = ConfigurationManager.ConnectionStrings["oracleConnection"].ConnectionString.ToString();
        
using (var connection = new OracleConnection(ConnectionString))
{
    connection.Open();

    double[] run_no = new double[2];
    double[] Id = new double[2];

    run_no[0] = 10;
    run_no[1] = 12;

    Id[0] = 100;
    Id[1] = 120;

    OracleParameter ora_run_no = new OracleParameter();
    ora_run_no.ParameterName = "run_no";
    ora_run_no.OracleDbType = OracleDbType.Double;
    ora_run_no.Direction = ParameterDirection.Input;
    ora_run_no.UdtTypeName = "t_number";
    ora_run_no.Value = run_no;

    OracleParameter ora_p_quote_id = new OracleParameter();
    ora_Id.ParameterName = "Id";
    ora_Id.OracleDbType = OracleDbType.Double;
    ora_Id.Direction = ParameterDirection.Input;
    ora_Id.UdtTypeName = "t_number";
    ora_Id.Value = Id;

    OracleCommand cmdInsert = new OracleCommand();
    cmdInsert.Connection = connection;
    cmdInsert.CommandType = CommandType.StoredProcedure;
    cmdInsert.CommandText = "SampleSchema.SamplePackage.SampleProc";

    cmdInsert.BindByName = true;
    cmdInsert.ArrayBindCount = Id.Length;

    cmdInsert.Parameters.Add(ora_run_no);
    cmdInsert.Parameters.Add(ora_Id);

    cmdInsert.ExecuteNonQuery();
}

这里有些混乱。当我执行 .NET 代码时,它会在 ExecuteNonQuery 处抛出错误,如下所示

ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'SAMPLEPROC'

ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

在 Oracle 后端,我使用 t_number 用户定义的数据类型。我唯一需要知道的是如何将其作为数组处理并从 C# 成功执行。

我对您使用的工具一无所知,但是-由于包中声明了类型,所以我会说:

ora_Id.UdtTypeName = "t_number";

应该是

ora_Id.UdtTypeName = "SampleSchema.SamplePackage.t_number";

就像您用于程序本身一样。


除此之外,由于您使用的类型是 table 个数字 ,您可以尝试使用 Oracle 的内置类型:sys.odcinumberlist .