Question

即使在设置cmd.CommandTimeout = 0后，我也收到超时过期错误查询从SAP数据库中提取，在SAP中，sql查询运行正常，但是当我尝试在visual studio中的适配器上运行它时，我得到了Timeout Expired错误。有什么我想念的吗？如何延长超时时间以便我的查询可以运行？这是我的VB.Net代码：

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
  Dim ds As New DataSet
  Dim dv As New DataView
  Dim ConStr As String = "Data Source= .\SQLOLEDB.1;Password=Password;Persist Security Info=True;User ID=User;Initial Catalog=XXX;Data Source=xxx.xxx.x.x;Connection Timeout=0"
  Dim cn As SqlConnection
  Try
      cn = New SqlConnection(ConStr)
      cn.Open()
      Dim cmd = cn.CreateCommand()
      cmd.CommandTimeout = 0
      Dim ad As New SqlDataAdapter("/* SELECT FROM [dbo].[OITM] T2 */" &
                                        " DECLARE @Whs_From AS VARCHAR(10)" &
                                        " DECLARE @Whs_To AS VARCHAR(10)" &
                                        "/* WHERE */" &
                                        " SET @Whs_From = /* T2.DfltWH */ 'AUT-L-N'" &
                                        " SET @Whs_To = /* T2.DfltWH */ 'AUT-L-N'" &
                                        " SELECT    QUT1.[ItemCode] AS 'Code'," &
                                        " ISNULL(SUM(QUT1.[OpenQty]), 0) AS 'Open'" &
                                        " INTO  #QuoteSum" &
                                        " FROM  QUT1 QUT1 INNER JOIN OITM OITM ON QUT1.[ItemCode] = OITM.[ItemCode] INNER JOIN OQUT OQUT ON QUT1.[DocEntry] = OQUT.[DocEntry]" &
                                        " WHERE     QUT1.[WhsCode] = OITM.[DfltWH] AND QUT1.[LineStatus] = 'O' AND OQUT.[Canceled] != 'Y' GROUP BY QUT1.[ItemCode]" &
                                        " SELECT    QUT1.[ItemCode] AS 'Code'," &
                                        " SUM(QUT1.[quantity]) AS 'Last360'" &
                                        " INTO  #Last360" &
                                        " FROM  QUT1 QUT1 INNER JOIN OITM OITM ON QUT1.[ItemCode] = OITM.[ItemCode] INNER JOIN OQUT OQUT ON QUT1.[DocEntry] = OQUT.[DocEntry]" &
                                        " WHERE     QUT1.[WhsCode] = OITM.[DfltWH] AND CONVERT(CHAR, QUT1.[DocDate], 112) < CONVERT(CHAR, GetDate()-270, 112) AND CONVERT(CHAR, QUT1.[DocDate], 112) >= CONVERT(CHAR, GetDate()-360, 112) AND OQUT.[Canceled] != 'Y'" &
                                        " GROUP BY QUT1.[ItemCode]" &
                                        " SELECT    OITW.[WhsCode] AS 'Warehouse'," &
                                        " OITW.[ItemCode] AS 'Item Code'," &
                                        " OITM.[ItemName] AS 'Item Description'," &
                                        " ISNULL(QuoteSum.[Open], 0) AS 'Sales Quote Qty'," &
                                        " OITW.[IsCommited] AS 'Sales Order Qty'," &
                                        " (ISNULL(QuoteSum.[Open], 0) + OITW.[IsCommited]) AS 'Demand'," &
                                        " OITW.[OnHand] AS 'In Stock Qty', OITW.[OnOrder] AS 'Purchase Order Qty'," &
                                        " (OITW.[OnHand] + OITW.[OnOrder]) AS 'Available'," &
                                        " OITW.[OnHand] - OITW.[IsCommited] - ISNULL(QuoteSum.[Open], 0) + OITW.[OnOrder] AS 'To Manufacture/Buy'," &
                                        " Last360.[Last360] as 'Last 271-360'" &
                                        " FROM  OITW OITW LEFT OUTER JOIN #QuoteSum QuoteSum ON OITW.[ItemCode] = QuoteSum.[Code] INNER JOIN OITM OITM ON OITW.[ItemCode] = OITM.[ItemCode] AND OITW.[WhsCode] = OITM.[DfltWH] LEFT OUTER JOIN #Last360 Last360 ON OITW.[ItemCode] = Last360.[Code]" &
                                        " WHERE     OITM.[DfltWH] >=@Whs_From AND OITM.[DfltWH] <= @Whs_To" &
                                        " BEGIN DROP TABLE #QuoteSum END" &
                                        " BEGIN DROP TABLE #Last360 END;", cn)
      ad.Fill(ds, "OITM")
      dv.Table = ds.Tables("OITM")
      Me.DataGridView1.DataSource = dv
  Catch ex As Exception
      MsgBox(ErrorToString)
  End Try
End Sub

以下是我收到的确切错误消息：

System.Data.SqlClient.SqlException：超时已过期。超时在完成操作或服务器之前经过的时间段没有回应。在 System.Data.SqlClient.SqlConnection.OnError（SqlException异常， Boolean breakConnection）at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（TdsParserStateObject stateObj）在System.Data.SqlClient.TdsParser.Run（RunBehavior runBehavior，SqlCommand cmdHandler，SqlDataReader dataStream， BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject System.Data.SqlClient.SqlDataReader.ConsumeMetaData（）中的stateObj）在System.Data.SqlClient.SqlDataReader.get_MetaData（）at System.Data.SqlClient.SqlCommand.FinishExecuteReader（SqlDataReader ds， RunBehavior runBehavior，String resetOptionsString）at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds（的CommandBehavior cmdBehavior，RunBehavior runBehavior，Boolean returnStream，Boolean async）at System.Data.SqlClient.SqlCommand.RunExecuteReader（的CommandBehavior cmdBehavior，RunBehavior runBehavior，Boolean returnStream，String 方法，DbAsyncResult结果）at System.Data.SqlClient.SqlCommand.RunExecuteReader（的CommandBehavior cmdBehavior，RunBehavior runBehavior，Boolean returnStream，String 方法）at System.Data.SqlClient.SqlCommand.ExecuteReader（的CommandBehavior 行为，String方法）at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader（的CommandBehavior 行为） System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader（的CommandBehavior 在System.Data.Common.DbDataAdapter.FillInternal（DataSet。）的行为） dataset，DataTable [] datatables，Int32 startRecord，Int32 maxRecords，字符串srcTable，IDbCommand命令，CommandBehavior行为）at System.Data.Common.DbDataAdapter.Fill（DataSet dataSet，Int32 startRecord，Int32 maxRecords，String srcTable，IDbCommand命令， CommandBehavior行为）at System.Data.Common.DbDataAdapter.Fill（DataSet dataSet，String srcTable）在CR_Test.Form1.Form1_Load（对象发送者，EventArgs e）在c：\ users \ leroif \ documents \ visual studio 2013 \ Projects \ CR Test \ CR Test \ Form1.vb：第46行

Answer 1

在Try语句之前放置以下代码，然后它不会忽略

 Dim cmd = cn.CreateCommand()
 cmd.CommandTimeout = 0

超时已过期（cmd.CommandTimeout = 0被忽略）

1 个答案: