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我有一个存储过程，当从我们的网站（通过网站连接池）调用时偶尔会超时。一旦超时，它就会一直被锁定在超时状态，直到从 Management Studio 会话中使用 drop/create 或 sp_recompile 重新编译该过程。

在超时时，使用 Management Studio 对相同过程使用相同参数不会超时。

通过 Management Studio 执行“ALTER PROCEDURE”并（相当彻底地）更改过程的内部执行并没有清除超时 - 在运行完整的 sp_recompile 之前它不会清除。

存储过程以OPTION (RECOMPILE)

该过程调用了两个函数，它们在产品的其余部分中普遍使用。使用这些功能（以类似方式）的其他程序都可以工作，即使在相关程序超时的期间也是如此。

如果有人可以就可能导致此超时的原因提供任何进一步的建议，将不胜感激。

存储过程如下：

ALTER PROCEDURE [dbo].[sp_g_VentureDealsCountSizeByYear] (
  @DateFrom         AS DATETIME = NULL
  ,@DateTo          AS DATETIME = NULL
  ,@ProductRegion   AS INT = NULL
  ,@PortFirmID      AS INT = NULL
  ,@InvFirmID       AS INT = NULL
  ,@SpecFndID       AS INT = NULL
) AS BEGIN
-- Returns the stats used for Market Overview
DECLARE @IDs    AS IDLIST
INSERT INTO @IDs
    SELECT IDs
    FROM dbo.fn_VentureDealIDs(@DateFrom,@DateTo,@ProductRegion,@PortFirmID,@InvFirmID,@SpecFndID)

CREATE TABLE #DealSizes (VentureID INT, DealYear INT, DealQuarter INT, DealSize_USD DECIMAL(18,2))
INSERT INTO #DealSizes
    SELECT vDSQ.VentureID, vDSQ.DealYear, vDSQ.DealQuarter, vDSQ.DealSize_USD
    FROM dbo.fn_VentureDealsSizeAndQuarter(@IDs) vDSQ

SELECT 
    yrs.Years Heading
    ,COUNT(vDSQ.VentureID)          AS Num_Deals
    ,SUM(vDSQ.DealSize_USD) AS DealSize_USD  
FROM tblYears yrs
    LEFT OUTER JOIN #DealSizes vDSQ ON vDSQ.DealYear = yrs.Years
WHERE (
        ((@DateFrom IS NULL) AND (yrs.Years >= (SELECT MIN(DealYear) FROM #DealSizes))) -- If no minimum year has been passed through, take all years from the first year found to the present.
            OR
        ((@DateFrom IS NOT NULL) AND (yrs.Years >= DATEPART(YEAR,@DateFrom)))   -- If a minimum year has been passed through, take all years from that specified to the present.
    ) AND (
        ((@DateTo IS NULL) AND (yrs.Years <= (SELECT MAX(DealYear) FROM #DealSizes))) -- If no maximum year has been passed through, take all years up to the last year found.
            OR 
        ((@DateTo IS NOT NULL) AND (yrs.Years <= DATEPART(YEAR,@DateTo)))   -- If a maximum year has been passed through, take all years up to that year.
    )
GROUP BY yrs.Years
ORDER BY Heading DESC
OPTION (RECOMPILE)
END
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1 回答 1

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如果您想在每次执行 SP 时重新编译它，您应该使用 recompile声明它；您的语法仅重新编译最后一次选择：

ALTER PROCEDURE [dbo].[sp_g_VentureDealsCountSizeByYear] (
  @DateFrom         AS DATETIME = NULL
  ,@DateTo          AS DATETIME = NULL
  ,@ProductRegion   AS INT = NULL
  ,@PortFirmID      AS INT = NULL
  ,@InvFirmID       AS INT = NULL
  ,@SpecFndID       AS INT = NULL
) WITH RECOMPILE

我不知道您的程序的哪一部分会导致问题。您可以尝试注释掉选择部分以查看从表函数创建临时表是否会产生性能问题；如果没有，那么查询本身就是一个问题。您可以按如下方式重写过滤器：

WHERE (@DateFrom IS NULL OR yrs.Years >= DATEPART(YEAR,@DateFrom))
  AND (@DateTo   IS NULL OR yrs.Years <= DATEPART(YEAR,@DateTo))

或者，也许更好，声明 startYear 和 endYear 变量，相应地设置它们并更改如下：

declare @startYear int
set @startYear = isnull (year(@DateFrom), (SELECT MIN(DealYear) FROM #DealSizes))
declare @endYear int
set @endYear = isnull (year(@DateTo), (SELECT MAX(DealYear) FROM #DealSizes))
...
where yrs.Year between @startYear and @endYear

如果 WITH RECOMPILE 不能解决问题，并且删除最后一个查询也没有帮助，那么您需要检查用于收集数据的表函数。

于 2012-07-19T09:54:49.330 回答