Question

我试图将数据从数据库带入dataTable，记录大约为600万。我们知道DataTable Limit 16,777,216

参考：http://msdn.microsoft.com/en-us/library/system.data.datatable.aspx

但是我的dataTable仅在250万条记录中耗尽了内存。我不知道为什么？

public DataTable Func(int totalRecords)
{
     SqlDependency.Start(ConfigurationManager.AppSettings["ConnectionString"].ToString());
     DataTable dt = new DataTable();

     SqlDataAdapter sda = new SqlDataAdapter();
     sda.SelectCommand = new SqlCommand();

     sda.SelectCommand.CommandText = "SP_NAME";
     sda.SelectCommand.Transaction = sqlTrans;
     sda.SelectCommand.Connection = this.connection;
     sda.SelectCommand.CommandType = CommandType.StoredProcedure;
     SqlCacheDependency dependency = new SqlCacheDependency(sda.SelectCommand);

     if (connection.State == ConnectionState.Closed)
         connection.Open();

     dt.Load(sda.SelectCommand.ExecuteReader(CommandBehavior.CloseConnection));
     return dt;
 }

Answer 1

它是可执行文件吗？如果是这样，请确保

 Project Settings -> Build -> Prefer 32-bit

未选中

仅仅2.5M记录后，DataTable就会失去内存

1 个答案: