我们有一个用于报告构建的Web Api服务。此服务使用MS SQL 2008数据库作为数据源。数据库在只读模式下用作镜像。 该服务和数据库托管在单个本地网络的不同计算机上。
名为TicketSaleByAggregator的数据库中有一个存储过程，用于选择报告数据。有时，该过程会抛出异常：
System.Data.SqlClient.SqlException (0x80131904): Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out
然后程序一次又一次地抛出这个异常直到我们重新编译它:: ALTER PROCEDURE [dbo] [TicketSaleByAggregator] 。 在命令ALTER PROCEDURE之后，即使在大数据集上，该过程也能完美运行，但在大约10-15小时后，错误再次抛出：超时已过期
程序参数：
DECLARE @PeriodFrom DATETIME = '2016-12-30 00:00:00'
DECLARE @PeriodTo DATETIME = '2016-12-30 23:59:59'
DECLARE @Dealers Identities
DECLARE @Branches Identities
DECLARE @SaleChannels Identities
DECLARE @Carriers Identities
INSERT INTO @Dealers (Id) VALUES(10068)
INSERT INTO @Branches(Id) VALUES(1),(2),(3)
INSERT INTO @SaleChannels(Id)VALUES (7)
exec TicketSaleByAggregator @PeriodFrom, @PeriodTo, @Dealers, @Branches, @SaleChannels, @Carriers
如果我们在SQL Management Studio中本地（在托管它的计算机上）调用该过程，则它将执行15秒 如果我们在托管web api服务的机器上调用该过程，则在SQL Management Studio中执行15-16秒 。结果数据包含82540条记录
存储过程代码：
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[TicketSaleByAggregator]
(
@PeriodFrom DATETIME,
@PeriodTo DATETIME,
@Dealers Identities READONLY,
@Branches Identities READONLY,
@SaleChannels Identities READONLY,
@Carriers Identities READONLY
)
AS
BEGIN
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
SET NOCOUNT ON
;WITH ParentDealer(childId, parentId, BIN)
AS(
SELECT d.Id,
parentDealer.pId,
parentDealer.BIN
FROM Dealer AS d
JOIN (
SELECT d.Id,
parentDealer.Id pId,
parentDealer.BIN
FROM Dealer d
JOIN Dealer parentDealer
ON parentDealer.Hid = d.Hid.GetAncestor(d.[Hid].[GetLevel]() -1)
) parentDealer
ON d.Id = parentDealer.Id
),
CarrierNames
AS(
SELECT c.Name AS CarrierName
FROM Carrier AS c
INNER JOIN @Carriers crs ON c.Id = crs.Id
),
Result
AS(
SELECT *
FROM
(
SELECT t.[ExpressId] AS TicketExpressId,
o.[OrderCreateDate] AS OperationDate,
1 AS TicketCount,
t.[Tariff] AS Tariff,
6 AS OperationTypeId,
sc.Name AS SalesChannelName,
b.ShortName AS BranchName,
o.CarrierName,
o.PaymentType AS PaymentType,
--financial dealers
uDealer.Surname AS FinancialDealerSurname,
uDealer.Name AS FinancialDealerName,
uDealer.Middlename AS FinancialDealerPatronymic,
d.BIN AS FinancialDealerBin,
uparentDealer.Surname AS FinancialParentDealerSurname,
uparentDealer.Name AS FinancialParentDealerName,
uparentDealer.Middlename AS FinancialParentDealerPatronymic,
parentDealer.BIN AS FinancialParentDealerBin,
--place dealers
uDealer.Surname AS PlaceDealerSurname,
uDealer.Name AS PlaceDealerName,
uDealer.Middlename AS PlaceDealerPatronymic,
d.BIN AS PlaceDealerBin,
uparentDealer.Surname AS PlaceParentDealerSurname,
uparentDealer.Name AS PlaceParentDealerName,
uparentDealer.Middlename AS PlaceParentDealerPatronymic,
parentDealer.BIN AS PlaceParentDealerBin
FROM Ticket AS t
INNER JOIN [Order] AS o ON o.Id = t.OrderId AND o.OrderCreateDate BETWEEN @PeriodFrom AND @PeriodTo
INNER JOIN [Terminal] AS ter ON t.[TerminalId] = ter.[Id]
LEFT JOIN [TerminalData] AS td ON ter.[Id] = td.[Id]
INNER JOIN [SalePoint] AS sp ON td.[SalePointId] = sp.[Id]
INNER JOIN FinAccStation AS fas ON fas.Id = sp.FinAccStationId
INNER JOIN Guo AS g ON g.Id = fas.GuoId
INNER JOIN Department AS dep ON dep.Id = g.DepartmentId
INNER JOIN Dealer AS d ON d.Id = ter.DealerId
INNER JOIN [User] AS uDealer ON uDealer.Id = d.Id
INNER JOIN SalesChannel AS sc ON sc.Id = d.SalesChannelId AND (EXISTS(SELECT * FROM @SaleChannels) AND (d.SalesChannelId IN (SELECT * FROM @saleChannels)) OR NOT EXISTS(SELECT * FROM @saleChannels))
INNER JOIN Branch AS b ON b.Id = dep.BranchId AND (EXISTS(SELECT * FROM @Branches) AND (b.Id IN (SELECT * FROM @Branches)))
INNER JOIN ParentDealer AS parentDealer ON parentDealer.childId = d.Id AND (parentDealer.parentId IN (SELECT Id FROM @Dealers) OR NOT EXISTS(SELECT * FROM @Dealers))
INNER JOIN [User] AS uParentDealer ON uParentDealer.Id = parentDealer.parentId
WHERE t.TicketStatusId IN (3, 6) AND
((EXISTS(SELECT TOP 1 * FROM @Carriers) AND (o.CarrierName IN (SELECT CarrierName FROM CarrierNames))) OR NOT EXISTS(SELECT TOP 1 * FROM @Carriers))
UNION ALL
SELECT t.[ExpressId] AS TicketExpressId,
c.OperationDate AS OperationDate,
-1 AS TicketCount,
(-1)*ct.RetTariff AS Tariff,
3 AS OperationTypeId,
sc.Name AS SalesChannelName,
b.ShortName AS BranchName,
o.CarrierName,
c.PaymentType AS PaymentType,
--financial dealers
uDealer.Surname AS DealerSurname,
uDealer.Name AS DealerName,
uDealer.Middlename AS DealerPatronymic,
d.BIN AS DealerBin,
uparentDealer.Surname AS ParentDealerSurname,
uparentDealer.Name AS ParentDealerName,
uparentDealer.Middlename AS ParentDealerPatronymic,
parentDealer.BIN AS ParentDealerBin,
--place dealers
uDealer1.Surname AS PlaceDealerSurname,
uDealer1.Name AS PlaceDealerName,
uDealer1.Middlename AS PlaceDealerPatronymic,
d1.BIN AS PlaceDealerBin,
uparentDealer1.Surname AS PlaceParentDealerSurname,
uparentDealer1.Name AS PlaceParentDealerName,
uparentDealer1.Middlename AS PlaceParentDealerPatronymic,
parentDealer1.BIN AS PlaceParentDealerBin
FROM Cancelation AS c
INNER JOIN CancelationTicket AS ct ON ct.CancelationId = c.Id
INNER JOIN Ticket AS t ON t.Id = ct.TicketId
INNER JOIN [Order] AS o ON o.Id = c.OrderId
INNER JOIN Terminal AS ter ON ter.Id = IIF(o.PaymentType = 1, c.TerminalId, t.TerminalId)
INNER JOIN Terminal AS ter1 ON ter1.Id = c.TerminalId
LEFT JOIN [TerminalData] AS td ON td.[Id] = ter.Id
INNER JOIN [SalePoint] AS sp ON td.[SalePointId] = sp.[Id]
INNER JOIN FinAccStation AS fas ON fas.Id = sp.FinAccStationId
INNER JOIN Guo AS g ON g.Id = fas.GuoId
INNER JOIN Department AS dep ON dep.Id = g.DepartmentId
INNER JOIN Dealer AS d ON d.Id = ter.DealerId
INNER JOIN Dealer AS d1 ON d1.Id = ter1.DealerId
INNER JOIN [User] AS uDealer ON uDealer.Id = d.Id
INNER JOIN [User] AS uDealer1 ON uDealer1.Id = d1.Id
INNER JOIN SalesChannel AS sc ON sc.Id = d.SalesChannelId AND (EXISTS(SELECT * FROM @SaleChannels) AND (d.SalesChannelId IN (SELECT * FROM @saleChannels)) OR NOT EXISTS(SELECT * FROM @saleChannels))
INNER JOIN Branch AS b ON b.Id = dep.BranchId AND (EXISTS(SELECT * FROM @Branches) AND (b.Id IN (SELECT * FROM @Branches)))
INNER JOIN ParentDealer AS parentDealer ON parentDealer.childId = d.Id AND (parentDealer.parentId IN (SELECT Id FROM @Dealers) OR NOT EXISTS(SELECT * FROM @Dealers))
INNER JOIN [User] AS uParentDealer ON uParentDealer.Id = parentDealer.parentId
INNER JOIN ParentDealer AS parentDealer1 ON parentDealer1.childId = d1.Id
INNER JOIN [User] AS uParentDealer1 ON uParentDealer1.Id = parentDealer1.parentId
WHERE c.OperationDate BETWEEN @PeriodFrom AND @PeriodTo AND
((EXISTS(SELECT TOP 1 * FROM @Carriers) AND (o.CarrierName IN (SELECT CarrierName FROM CarrierNames))) OR NOT EXISTS(SELECT TOP 1 * FROM @Carriers)) AND
c.ResponseXml.value('(/GtETicket_Response/@Type)[1]','nvarchar(max)') != 'ExpressStatus'
)T
)
SELECT *
from Result
END
更新： C＃端的代码：
public IEnumerable<RegisterTicketsByDealerReportItem> GetRegisterTicketsByDealerReport(DateTime periodFrom, DateTime periodTo, int[] dealerIds, int[] salesChannelIds, int[] branchIds, int[] carrierIds)
{
var pars = new DynamicParameters();
var identityFailureValue = new { Id = 0 }.ToEmptyTable().AsTableValuedParameter("Identities");
pars.AddDynamicParams(
new
{
PeriodFrom = periodFrom,
PeriodTo = periodTo,
Dealers = dealerIds.Return(ds => ds.Select(d => new { Id = d }).ToDataTable().AsTableValuedParameter("Identities"), identityFailureValue),
Branches = branchIds.Return(br => br.Select(b => new { Id = b }).ToDataTable().AsTableValuedParameter("Identities"), identityFailureValue),
SaleChannels = salesChannelIds.Return(scs => scs.Select(sc => new { Id = sc }).ToDataTable().AsTableValuedParameter("Identities"), identityFailureValue),
Carriers = carrierIds.Return(scs => scs.Select(sc => new { Id = sc }).ToDataTable().AsTableValuedParameter("Identities"), identityFailureValue)
});
var result = Connection.Query<RegisterTicketsByDealerReportItem>("TicketSaleByAggregator", pars,
commandType: CommandType.StoredProcedure,
commandTimeout: dbConfiguration.SqlLargeTimeoutSeconds);
Connection.CloseIfNoTransaction();
return result;
}
Sql连接参数：
<add key="SqlLargeTimeoutSeconds" value="00:02:00" />
<add name="Readonly" providerName="System.Data.SqlClient" connectionString="Data Source=.;Initial Catalog=db_Readonly;Integrated Security=True;" />
答案 0 :(得分：0)
1-如果是非敏感的跨国数据，请尝试使用（nolock） 2-停止镜像并检查速度。镜像可能会导致此问题