使用C#将数千条记录输入Oracle数据库的sql是什么？

using System;
using System.Data;
using Oracle.ManagedDataAccess.Client;

class Program
{
    static void Main(string[] args)
    {
        string connectionString = "User Id=username;Password=password;Data Source=datasource";
        string insertSql = "INSERT INTO mytable (column1, column2, column3) VALUES (:column1, :column2, :column3)";

        using (OracleConnection connection = new OracleConnection(connectionString))
        {
            connection.Open();

            using (OracleCommand command = new OracleCommand(insertSql, connection))
            {
                command.CommandType = CommandType.Text;
                command.Parameters.Add("column1", OracleDbType.Varchar2, ParameterDirection.Input);
                command.Parameters.Add("column2", OracleDbType.Int32, ParameterDirection.Input);
                command.Parameters.Add("column3", OracleDbType.Date, ParameterDirection.Input);

                for (int i = 0; i < 10000; i++)
                {
                    command.Parameters["column1"].Value = "value1";
                    command.Parameters["column2"].Value = 123;
                    command.Parameters["column3"].Value = DateTime.Now;

                    command.ExecuteNonQuery();
                }
            }
        }
    }
}