COMMIT TRANSACTION请求没有相应的BEGIN TRANSACTION

Question

此代码有什么问题。

出现此错误The COMMIT TRANSACTION request has no corresponding BEGIN TRANSACTION. 当程序中出现某些异常时。 我该如何解决？

    BEGIN 
    BEGIN TRANSACTION 
    DECLARE  
         @Id bigint 
        ,@Month nvarchar(100) 
        ,@Year nvarchar(100) 
        ,@CountryofExport nvarchar(100)
        ,@CountryofOrigin nvarchar(100) 
        ,@HSCode nvarchar(100)
        ,@Unit nvarchar(100)
        ,@Quantity nvarchar(100)
        ,@CustomValue nvarchar(255)
        ,@Type nvarchar(100)
        ,@TypeBit bit
        ,@CountryofExportID int
        ,@CountryofOriginID int
        ,@MeasurementId int
        ,@Remarks nvarchar(500)
        ,@CommodityId int
        ,@SDate nvarchar(100)
        ,@SameRec int
        ,@counts int


    DECLARE @Cursor_TradeFlow CURSOR
    SET @Cursor_TradeFlow = CURSOR FOR

    SELECT [Id],[Months],[Years],[CountryofExport],[CountryofOrigin],[HSCode],[Quantity],[Unit],[CustomValue],[Type] FROM [Temp_Trading]    

    OPEN @Cursor_TradeFlow
    FETCH NEXT FROM @Cursor_TradeFlow INTO @Id, @Month, @Year, @CountryofExport, @CountryofOrigin, @HSCode,@Quantity, @Unit, @CustomValue, @Type

    WHILE @@FETCH_STATUS = 0

    BEGIN
    Set @Remarks='';




   Declare @EICountry varchar(100),
   @Checkbit bit,
    @CheckYearIsNumeric bit,
    @CheckMonthIsNumeric bit


      BEGIN TRY        

         SET @CheckMonthIsNumeric= convert(INT, @Month);

      END TRY 

      BEGIN CATCH
    begin

             set @Checkbit=1;
         set @Remarks = @Remarks + 'Invalid Month'
         set @CheckMonthIsNumeric=1 
         end
      END CATCH



      BEGIN TRY

          set @CheckYearIsNumeric=  convert(INT, @Year);

      END TRY
      BEGIN CATCH


        SET @CheckYearIsNumeric= 1;
        set @Checkbit=1;
        set @Remarks = @Remarks + 'Invalid Year'

      END CATCH      


    Set @SameRec = (Select COUNT(*) From TradeFlow Where int_Month = @CheckMonthIsNumeric and int_Year = @CheckYearIsNumeric
                  and int_OriginLocationId = @CountryofExportID and int_DestinationLocationId = @CountryofOriginID and int_CommodityId = @CommodityId
                  and int_MeasurementId = @MeasurementId)   


    IF @@ERROR <> 0
    BEGIN
         ROLLBACK
    END

    FETCH NEXT FROM @Cursor_TradeFlow INTO @Id, @Month, @Year, @CountryofExport, @CountryofOrigin, @HSCode,@Quantity, @Unit, @CustomValue, @Type

    END
    CLOSE @Cursor_TradeFlow
    DEALLOCATE @Cursor_TradeFlow
    COMMIT
END

Answer 1

具有：

IF @@ERROR <> 0
BEGIN
     ROLLBACK
END

在游标循环内是一个不好的信号-您回滚事务，然后继续进行下一个迭代。 当循环最终结束时，您将尝试提交，并且-糟糕-不再有打开的事务，并且回滚后的所有操作都保留在原处。

您可能想在回滚后使用GOTO退出循环，或以其他方式处理错误。 很难说出最佳策略是什么。

Answer 2

您可以使用命名交易：

-初期的大交易
开始交易BIG_TRANSACTION

 -- your code here -- a transaction for each fetched item BEGIN TRANSACTION FETCH_TRANSACTION -- your code here if OK COMMIT TRANSACTION FETCH_TRANSACTION else ROLLBACK TRANSACTION FETCH_TRANSACTION 

提交/回滚事务BIG_TRANSACTION