[英]SQL transaction rollback failure
我有两个要插入数据的表,表“ CAM”和表“ COut”,在“ CAM”中插入数据后,它将返回一个retAutoID,该ID将作为“ COut”的必需参数之一被传递给“ COut”插入。 我在业务逻辑中实施了回滚,这样,如果“ Cout”在插入时遇到异常错误,即使成功,先前对“ CAM”的插入也会回滚。
使用下面的代码,尝试执行插入后出现此错误: “当分配给命令的连接处于挂起的本地事务中时,ExecuteNonQuery要求命令具有事务。该命令的Transaction属性尚未初始化”。
我认为该问题可能是由于:
dbCommand = GetStoredProcedureCommand(“ COut_Add”)dbCommand.Connection = dbConnection
如果完全删除“ Cout”的第二个数据插入,则不会有问题。 请指教。 谢谢。
Public Function InsertCM(ByVal objCMBLL As CMBLL, ByVal dbTrans As DbTransaction, ByVal dbConnection As DbConnection, ByVal COut As DataSet) As Boolean
Dim dbCommand As DbCommand = Nothing
Dim retAutoID As Int32 = Nothing
Dim bol_Success As Boolean = False
Try
If dbConnection.State <> ConnectionState.Open Then
dbConnection.Open()
End If
dbCommand = GetStoredProcedureCommand("CAM_Add")
dbCommand.Connection = dbConnection
dbCommand.Transaction = dbTrans
With objCMBLL
AddInParameter(dbCommand, "@Code", DbType.String, 50, DBNull.Value)
If Not String.IsNullOrEmpty(.CamCode) Then
dbCommand.Parameters("@Code").Value = .CamCode
End If
retAutoID = CType(ExecuteScalar(dbCommand), Integer)
dbCommand = GetStoredProcedureCommand("COut_Add")
dbCommand.Connection = dbConnection
For i As Integer = 0 To COut.Tables("COut").Rows.Count - 1
dbCommand.Parameters.Clear()
AddInParameter(dbCommand, "@Ol_Code", DbType.String, 50, DBNull.Value)$
dbCommand.Parameters("@Ol_Code").Value = COut.Tables("CampaignOutlets").Rows(i).Item(0).ToString
AddInParameter(dbCommand, "@Campaign_AutoID", DbType.Int32, 0, DBNull.Value)
dbCommand.Parameters("@Campaign_AutoID").Value = retAutoID
Next i
ExecuteNonQuery(dbCommand)
End With
bol_Success = True
Catch ex As Exception
Throw New DALException(ex, dbCommand, Caching.GetCustomerCodeCookie(), "InsertCampaignManagementTable")
Finally
If Not dbCommand Is Nothing Then
dbCommand.Dispose()
End If
End Try
Return bol_Success
End Function
好的,结果我没有为tbl“ COut”包含'dbCommand.Transaction = dbTrans'。
我在您的代码中看到:
dbCommand.Connection = dbConnection(第二次)。
您是否真的需要为命令重新分配连接? 我想你不应该。 我们应该只重新分配Command对象的sql文本。 应该是这样的:
dbCommand.text = GetStoredProcedureCommand(“ COUt”)
代替
dbCommand = GetStoredProcedureCommand(“ COut_Add”)dbCommand.Connection = dbConnection
和
对于i As Integer = 0到COut.Tables(“ COut”)。Rows.Count-1 dbCommand.Parameters.Clear()
我想您必须在循环之前调用dbCommand.Parameters.Clear()。
HTH。
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