Caching Of Stored Procedure
Apr 13, 2007
Hello all,
I've got an application that calls a really simple stored procedure - just selects all records from the dbase. The problem is this seems to cache every now and then and as the same table is updated very frequently by other users this means the data returned isn't up to date. I thought it was Sql Server caching the results of the stored procedure, but I can do an iisreset and it will be up to date again. And unless I'm missing some point iisreset has no bearing on Sql Server. So is there an application data cache somewhere that I should be clearing to ensure the recordset is always up to date?
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Sep 13, 2005
I needed to do lookup on tables with approx 1 million records (how else do I know if record already exists?).
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Sep 21, 2007
I am wonder if i could use caching if i am using a stored procedure to select records from several tables? If so how do i accomplish this?
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Jul 15, 2002
Is there any way to find out what SP's are cached? Top ten Stored PRocs used or anything close?
THanks,
David
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Nov 1, 2007
Hi all - I'm trying to optimized my stored procedures to be a bit easier to maintain, and am sure this is possible, not am very unclear on the syntax to doing this correctly. For example, I have a simple stored procedure that takes a string as a parameter, and returns its resolved index that corresponds to a record in my database. ie
exec dbo.DeriveStatusID 'Created'
returns an int value as 1
(performed by "SELECT statusID FROM statusList WHERE statusName= 'Created')
but I also have a second stored procedure that needs to make reference to this procedure first, in order to resolve an id - ie:
exec dbo.AddProduct_Insert 'widget1'
which currently performs:SET @statusID = (SELECT statusID FROM statusList WHERE statusName='Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
I want to simply the insert to perform (in one sproc):
SET @statusID = EXEC deriveStatusID ('Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
This works fine if I call this stored procedure in code first, then pass it to the second stored procedure, but NOT if it is reference in the second stored procedure directly (I end up with an empty value for @statusID in this example).
My actual "Insert" stored procedures are far more complicated, but I am working towards lightening the business logic in my application ( it shouldn't have to pre-vet the data prior to executing a valid insert).
Hopefully this makes some sense - it doesn't seem right to me that this is impossible, and am fairly sure I'm just missing some simple syntax - can anyone assist?
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Mar 3, 2008
Hi all,
I have 2 sets of sql code in my SQL Server Management Stidio Express (SSMSE):
(1) /////--spTopSixAnalytes.sql--///
USE ssmsExpressDB
GO
CREATE Procedure [dbo].[spTopSixAnalytes]
AS
SET ROWCOUNT 6
SELECT Labtests.Result AS TopSixAnalytes, LabTests.Unit, LabTests.AnalyteName
FROM LabTests
ORDER BY LabTests.Result DESC
GO
(2) /////--spTopSixAnalytesEXEC.sql--//////////////
USE ssmsExpressDB
GO
EXEC spTopSixAnalytes
GO
I executed them and got the following results in SSMSE:
TopSixAnalytes Unit AnalyteName
1 222.10 ug/Kg Acetone
2 220.30 ug/Kg Acetone
3 211.90 ug/Kg Acetone
4 140.30 ug/L Acetone
5 120.70 ug/L Acetone
6 90.70 ug/L Acetone
/////////////////////////////////////////////////////////////////////////////////////////////
Now, I try to use this Stored Procedure in my ADO.NET-VB 2005 Express programming:
//////////////////--spTopSixAnalytes.vb--///////////
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim sqlConnection As SqlConnection = New SqlConnection("Data Source = .SQLEXPRESS; Integrated Security = SSPI; Initial Catalog = ssmsExpressDB;")
Dim sqlDataAdapter As SqlDataAdapter = New SqlDataAdaptor("[spTopSixAnalytes]", sqlConnection)
sqlDataAdapter.SelectCommand.Command.Type = CommandType.StoredProcedure
'Pass the name of the DataSet through the overloaded contructor
'of the DataSet class.
Dim dataSet As DataSet ("ssmsExpressDB")
sqlConnection.Open()
sqlDataAdapter.Fill(DataSet)
sqlConnection.Close()
End Sub
End Class
///////////////////////////////////////////////////////////////////////////////////////////
I executed the above code and I got the following 4 errors:
Error #1: Type 'SqlConnection' is not defined (in Form1.vb)
Error #2: Type 'SqlDataAdapter' is not defined (in Form1.vb)
Error #3: Array bounds cannot appear in type specifiers (in Form1.vb)
Error #4: 'DataSet' is not a type and cannot be used as an expression (in Form1)
Please help and advise.
Thanks in advance,
Scott Chang
More Information for you to know:
I have the "ssmsExpressDB" database in the Database Expolorer of VB 2005 Express. But I do not know how to get the SqlConnection and the SqlDataAdapter into the Form1. I do not know how to get the Fill Method implemented properly.
I try to learn "Working with SELECT Statement in a Stored Procedure" for printing the 6 rows that are selected - they are not parameterized.
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Nov 14, 2014
I am new to work on Sql server,
I have One Stored procedure Sp_Process1, it's returns no of columns dynamically.
Now the Question is i wanted to get the "Sp_Process1" procedure return data into Temporary table in another procedure or some thing.
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Jan 29, 2015
I have some code that I need to run every quarter. I have many that are similar to this one so I wanted to input two parameters rather than searching and replacing the values. I have another stored procedure that's executed from this one that I will also parameter-ize. The problem I'm having is in embedding a parameter in the name of the called procedure (exec statement at the end of the code). I tried it as I'm showing and it errored. I tried googling but I couldn't find anything related to this. Maybe I just don't have the right keywords. what is the syntax?
CREATE PROCEDURE [dbo].[runDMQ3_2014LDLComplete]
@QQ_YYYY char(7),
@YYYYQQ char(8)
AS
begin
SET NOCOUNT ON;
select [provider group],provider, NPI, [01-Total Patients with DM], [02-Total DM Patients with LDL],
[Code] ....
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Sep 19, 2006
I have a requirement to execute an Oracle procedure from within an SQL Server procedure and vice versa.
How do I do that? Articles, code samples, etc???
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Dec 28, 2005
I have a sub that passes values from my form to my stored procedure. The stored procedure passes back an @@IDENTITY but I'm not sure how to grab that in my asp page and then pass that to my next called procedure from my aspx page. Here's where I'm stuck: Public Sub InsertOrder() Conn.Open() cmd = New SqlCommand("Add_NewOrder", Conn) cmd.CommandType = CommandType.StoredProcedure ' pass customer info to stored proc cmd.Parameters.Add("@FirstName", txtFName.Text) cmd.Parameters.Add("@LastName", txtLName.Text) cmd.Parameters.Add("@AddressLine1", txtStreet.Text) cmd.Parameters.Add("@CityID", dropdown_city.SelectedValue) cmd.Parameters.Add("@Zip", intZip.Text) cmd.Parameters.Add("@EmailPrefix", txtEmailPre.Text) cmd.Parameters.Add("@EmailSuffix", txtEmailSuf.Text) cmd.Parameters.Add("@PhoneAreaCode", txtPhoneArea.Text) cmd.Parameters.Add("@PhonePrefix", txtPhonePre.Text) cmd.Parameters.Add("@PhoneSuffix", txtPhoneSuf.Text) ' pass order info to stored proc cmd.Parameters.Add("@NumberOfPeopleID", dropdown_people.SelectedValue) cmd.Parameters.Add("@BeanOptionID", dropdown_beans.SelectedValue) cmd.Parameters.Add("@TortillaOptionID", dropdown_tortilla.SelectedValue) 'Session.Add("FirstName", txtFName.Text) cmd.ExecuteNonQuery() cmd = New SqlCommand("Add_EntreeItems", Conn) cmd.CommandType = CommandType.StoredProcedure cmd.Parameters.Add("@CateringOrderID", get identity from previous stored proc) <------------------------- Dim li As ListItem Dim p As SqlParameter = cmd.Parameters.Add("@EntreeID", Data.SqlDbType.VarChar) For Each li In chbxl_entrees.Items If li.Selected Then p.Value = li.Value cmd.ExecuteNonQuery() End If Next Conn.Close()I want to somehow grab the @CateringOrderID that was created as an end product of my first called stored procedure (Add_NewOrder) and pass that to my second stored procedure (Add_EntreeItems)
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Sep 26, 2014
I have a stored procedure and in that I will be calling a stored procedure. Now, based on the parameter value I will get stored procedure name to be executed. how to execute dynamic sp in a stored rocedure
at present it is like EXECUTE usp_print_list_full @ID, @TNumber, @ErrMsg OUTPUT
I want to do like EXECUTE @SpName @ID, @TNumber, @ErrMsg OUTPUT
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Mar 28, 2007
I have a stored procedure that calls a msdb stored procedure internally. I granted the login execute rights on the outer sproc but it still vomits when it tries to execute the inner. Says I don't have the privileges, which makes sense.
How can I grant permissions to a login to execute msdb.dbo.sp_update_schedule()? Or is there a way I can impersonate the sysadmin user for the call by using Execute As sysadmin some how?
Thanks in advance
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Jan 23, 2008
Has anyone encountered cases in which a proc executed by DTS has the following behavior:
1) underperforms the same proc when executed in DTS as opposed to SQL Server Managemet Studio
2) underperforms an ad-hoc version of the same query (UPDATE) executed in SQL Server Managemet Studio
What could explain this?
Obviously,
All three scenarios are executed against the same database and hit the exact same tables and indices.
Query plans show that one step, a Clustered Index Seek, consumes most of the resources (57%) and for that the estimated rows = 1 and actual rows is 10 of 1000's time higher. (~ 23000).
The DTS execution effectively never finishes even after many hours (10+)
The Stored procedure execution will finish in 6 minutes (executed after the update ad-hoc query)
The Update ad-hoc query will finish in 2 minutes
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Sep 13, 2007
Hi all,
I am trying to debug stored procedure using visual studio. I right click on connection and checked 'Allow SQL/CLR debugging' .. the store procedure is not local and is on sql server.
Whenever I tried to right click stored procedure and select step into store procedure> i get following error
"User 'Unknown user' could not execute stored procedure 'master.dbo.sp_enable_sql_debug' on SQL server XXXXX. Click Help for more information"
I am not sure what needs to be done on sql server side
We tried to search for sp_enable_sql_debug but I could not find this stored procedure under master.
Some web page I came accross says that "I must have an administratorial rights to debug" but I am not sure what does that mean?
Please advise..
Thank You
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Mar 31, 2008
I have a stored procedure 'ChangeUser' in which there is a call to another stored procedure 'LogChange'. The transaction is started in 'ChangeUser'. and the last statement in the transaction is 'EXEC LogChange @p1, @p2'. My questions is if it would be correct to check in 'LogChange' the following about this transaction: 'IF @@trancount >0 BEGIN Rollback tran' END Else BEGIN Commit END.
Any help on this would be appreciated.
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Oct 10, 2006
Hi,I am getting error when I try to call a stored procedure from another. I would appreciate if someone could give some example.My first Stored Procedure has the following input output parameters:ALTER PROCEDURE dbo.FixedCharges @InvoiceNo int,@InvoiceDate smalldatetime,@TotalOut decimal(8,2) outputAS .... I have tried using the following statement to call it from another stored procedure within the same SQLExpress database. It is giving me error near CALL.CALL FixedCharges (@InvoiceNo,@InvoiceDate,@TotalOut )Many thanks in advanceJames
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Nov 15, 2006
I have a store procedure (e.g. sp_FetchOpenItems) in which I would like to call an existing stored procedure (e.g. sp_FetchAnalysts). The stored proc, sp_FetchAnalysts returns a resultset of all analysts in the system.
I would like to call sp_FetchAnalysts from within sp_FetchOpenItems and insert the resultset from sp_FetchAnalysts into a local temporary table. Is this possible?
Thanks,
Kevin
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May 18, 2007
This is the Stored Procedure below ->
SET QUOTED_IDENTIFIER ON GOSET ANSI_NULLS ON GO
/****** Object: Stored Procedure dbo.BPI_SearchArchivedBatches Script Date: 5/18/2007 11:28:41 AM ******/if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[BPI_SearchArchivedBatches]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)drop procedure [dbo].[BPI_SearchArchivedBatches]GO
/****** Object: Stored Procedure dbo.BPI_SearchArchivedBatches Script Date: 4/3/2007 4:50:23 PM ******/
/****** Object: Stored Procedure dbo.BPI_SearchArchivedBatches Script Date: 4/2/2007 4:52:19 PM ******/
CREATE PROCEDURE BPI_SearchArchivedBatches( @V_BatchStatus Varchar(30)= NULL, @V_BatchType VARCHAR(50) = NULL, @V_BatchID NUMERIC(9) = NULL, @V_UserID CHAR(8) = NULL, @V_FromDateTime DATETIME = '01/01/1900', @V_ToDateTime DATETIME = '01/01/3000', @SSS varchar(500) = null, @i_WildCardFlag INT)
AS
DECLARE @SQLString NVARCHAR(4000)DECLARE @ParmDefinition NVARCHAR (4000)
IF (@i_WildCardFlag=0)BEGIN
SET @SQLString='SELECT Batch.BatchID, Batch.Created_By, Batch.RequestSuccessfulRecord_Count, Batch.ResponseFailedRecord_Count, Batch.RequestTotalRecord_Count, Batch.Request_Filename, Batch.Response_Filename, Batch.LastUpdated_By, Batch.LastUpdated, Batch.Submitted_By, Batch.Submitted_On, Batch.CheckedOut_By, Batch.Checked_Out_Status, Batch.Batch_Description, Batch.Status_Code, Batch.Created_On, Batch.Source, Batch.Archived_Status, Batch.Archived_By, Batch.Archived_On, Batch.Processing_Mode, Batch.Batch_TemplateID, Batch.WindowID,Batch.WindowDetails, BatchTemplate.Batch_Type, BatchTemplate.Batch_SubType FROM Batch INNER JOIN BatchTemplate ON Batch.Batch_TemplateID = BatchTemplate.Batch_TemplateID WHERE ((@V_BatchID IS NULL) OR (Batch.BatchID = @V_BatchID )) AND ((@V_UserID IS NULL) OR (Batch.Created_By = @V_UserID )) AND ((Batch.Created_On >= @V_FromDateTime ) AND (Batch.Created_On <= @V_ToDateTime )) AND Batch.Archived_Status = 1 '
if (@V_BatchStatus IS not null) begin set @SQLString=@SQLString + ' AND (Batch.Status_Code in ('+@V_BatchStatus+'))' end
if (@V_BatchType IS not null) begin set @SQLString=@SQLString + ' AND (BatchTemplate.Batch_Type in ('+@V_BatchType+'))' end END
ELSEBEGIN SET @SQLString='SELECT Batch.BatchID, Batch.Created_By, Batch.RequestSuccessfulRecord_Count, Batch.ResponseFailedRecord_Count, Batch.RequestTotalRecord_Count, Batch.Request_Filename, Batch.Response_Filename, Batch.LastUpdated_By, Batch.LastUpdated, Batch.Submitted_By, Batch.Submitted_On, Batch.CheckedOut_By, Batch.Checked_Out_Status, Batch.Batch_Description, Batch.Status_Code, Batch.Created_On, Batch.Source, Batch.Archived_Status, Batch.Archived_By, Batch.Archived_On, Batch.Processing_Mode, Batch.Batch_TemplateID, Batch.WindowID,Batch.WindowDetails, BatchTemplate.Batch_Type, BatchTemplate.Batch_SubType FROM Batch INNER JOIN BatchTemplate ON Batch.Batch_TemplateID = BatchTemplate.Batch_TemplateID WHERE ((@V_BatchID IS NULL) OR (isnull (Batch.BatchID, '''') LIKE @SSS )) AND ((@V_UserID IS NULL) OR (isnull (Batch.Created_By , '''') LIKE @V_UserID )) AND ((Batch.Created_On >= @V_FromDateTime ) AND (Batch.Created_On <= @V_ToDateTime )) AND Batch.Archived_Status = 1 '
if (@V_BatchStatus IS not null) begin set @SQLString=@SQLString + ' AND (Batch.Status_Code in ('+@V_BatchStatus+'))' end
if (@V_BatchType IS not null) begin set @SQLString=@SQLString + ' AND (BatchTemplate.Batch_Type in ('+@V_BatchType+'))' end
END
PRINT @SQLString
SET @ParmDefinition = N' @V_BatchStatus Varchar(30), @V_BatchType VARCHAR(50), @V_BatchID NUMERIC(9), @V_UserID CHAR(8), @V_FromDateTime DATETIME , @V_ToDateTime DATETIME, @SSS varchar(500)'
EXECUTE sp_executesql @SQLString, @ParmDefinition, @V_BatchStatus , @V_BatchType , @V_BatchID, @V_UserID , @V_FromDateTime , @V_ToDateTime , @SSS
GO
SET QUOTED_IDENTIFIER OFF GOSET ANSI_NULLS ON GO
The above stored procedure is related to a search screen where in User is able to search from a variety of fields that include userID (corresponding column Batch.Created_By) and batchID (corresponding column Batch.BatchID). The column UserID is a varchar whereas batchID is a numeric.
REQUIREMENT:
The stored procedure should cater to a typical search where any of the fields can be entered. meanwhile it also should be able to do a partial search on BatchID and UserID.
Please help me regarding the same.
Thanks in advance.
Sandeep Kumar
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Apr 29, 2008
I have a stored procedure that among other things needs to get a total of hours worked. These hours are totaled by another stored procedure already. I would like to call the totaling stored procedure once for each user which required a loop sort of thing
for each user name in a temporary table (already done)
total = result from execute totaling stored procedure
Can you help with this
Thanks
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Apr 29, 2004
Hi there
i have a stored procedure like this:
CREATE PROCEDURE SP_Main
AS
SET NOCOUNT ON
BEGIN TRANSACTION
exec SP_Sub_One output
exec SP_Sub_Two output
IF @@ERROR = 0
BEGIN
-- Success. Commit the transaction.
Commit Tran
END
ELSE
Rollback Tran
return
GO
now the problem is, when i execute the stored procedure's inside the main stored procedure, and these sub sp's has an error on it, the main stored procedure doesnt rollback the transation.
now i can put the "begin transation" in the two sub stored procedure's. The problem is
what if the first "SP_Sub_One" executed successfully, and there was error in "SP_Sub_Two"
now the "SP_Sub_One" has been executed and i cant rollback it... the error occured in the
"SP_Sub_Two" stored procedure ... so it wont run ... so there will be error in the data
how can i make a mian "BEGIN TRANSACTION" , that even it include the execution of stored procedure in it.
Thanks in advance
Mahmoud Manasrah
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Mar 2, 2007
Hello people,
When I am trying to call a function I made from a stored procedure of my creation as well I am getting:
Running [dbo].[DeleteSetByTime].
Cannot find either column "dbo" or the user-defined function or aggregate "dbo.TTLValue", or the name is ambiguous.
No rows affected.
(0 row(s) returned)
@RETURN_VALUE =
Finished running [dbo].[DeleteSetByTime].
This is my function:
ALTER FUNCTION dbo.TTLValue
(
)
RETURNS TABLE
AS
RETURN SELECT Settings.TTL FROM Settings WHERE Enabled='true'
This is my stored procedure:
ALTER PROCEDURE dbo.DeleteSetByTime
AS
BEGIN
SET NOCOUNT ON
DECLARE @TTL int
SET @TTL = dbo.TTLValue()
DELETE FROM SetValues WHERE CreatedTime > dateadd(minute, @TTL, CreatedTime)
END
CreatedTime is a datetime column and TTL is an integer column.
I tried calling it by dbo.TTLValue(), dbo.MyDatabase.TTLValue(), [dbo].[MyDatabase].[TTLValue]() and TTLValue(). The last returned an error when saving it "'TTLValue' is not a recognized built-in function name". Can anybody tell me how to call this function from my stored procedure? Also, if anybody knows of a good book or site with tutorials on how to become a pro in T-SQL I will appreciate it.
Your help is much appreciated.
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May 16, 2008
Hello,
I am hoping there is a solution within SQL that work for this instead of making round trips from the front end. I have a stored procedure that is called from the front-end(USP_DistinctBalancePoolByCompanyCurrency) that accepts two parameters and returns one column of data possibly several rows. I have a second stored procedure(USP_BalanceDateByAccountPool) that accepts the previous stored procedures return values. What I would like to do is call the first stored procedure from the front end and return the results from the second stored procedure. Since it's likely I will have more than row of data, can I loop the second passing each value returned from the first?
The Stored Procs are:
CREATE PROCEDURE USP_DistinctBalancePoolByCompanyCurrency
@CID int,
@CY char(3)
AS
SELECT Distinct S.BalancePoolName
FROM SiteRef S
INNER JOIN Account A ON A.PoolId=S.ID
Inner JOIN AccountBalance AB ON A.Id = AB.AccountId
Inner JOIN AccountPool AP On AP.Id=A.PoolId
Where A.CompanyId=@CID And AB.Currency=@CY
CREATE PROCEDURE USP_BalanceDateByAccountPool
@PoolName varchar(50)
AS
Declare @DT datetime
Select @DT=
(Select MAX(AccountBalance.DateX) From Company Company
INNER JOIN Account Account ON Company.Id = Account.CompanyId
INNER JOIN SiteRef SiteRef ON Account.PoolId = SiteRef.ID
Inner JOIN AccountBalance AccountBalance ON Account.Id = AccountBalance.AccountId
WHERE SiteRef.BalancePoolName = @PoolName)
SELECT SiteRef.BalancePoolName, AccountBalance.DateX, AccountBalance.Balance
FROM Company Company
INNER JOIN Account Account ON Company.Id = Account.CompanyId
INNER JOIN SiteRef SiteRef ON Account.PoolId = SiteRef.ID
Inner JOIN AccountBalance AccountBalance ON Account.Id = AccountBalance.AccountId
WHERE SiteRef.BalancePoolName = @PoolName And AccountBalance.DateX = @DT
Order By AccountBalance.DateX DESC
Any assistance would be greatly appreciated.
Thank you,
Dave
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Jul 20, 2005
Is it possible to execute a stored procedure in one database, which thenitself executes a stored procedure from another database? We have decide tosplit our data into a tree structure (DB1) and data blobs (DB2) (we areusing MSDE and we have a 2gb limit with each DB so we've done it this wayfor that reason). I would like to, say, execute a stored procedure in DB1,passing in the data blob and other details, DB1 will create a tree node inDB1 and then add the blob record to DB2. DB1 will wrap in a transaction ofcourse, as will DB2 when it adds the blob. Is this possible?
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Jul 20, 2005
Hi All,I have an application that reads data from a very slow database link(like 10 seconds per call) though what I am looking for would be ofgeneric use for anyone who has long-running queries that arefrequently repeated.I would like to be able to cache the results of a query so that I donot have to re-execute that query if it is reissued. Ideally Ibelieve that this could be implemented by hiding the query inside aUDF and exposing the UDF through a view. The UDF could then "Checkthe cache" and only run the slow query if there wasn't a match (or ifthe match was too old). From what I understand the best way to dothis would be for the cache to be an extended stored procedure.Has anyone done or seen this? Has someone written a copy that Icould purchase? Does anyone care to offer their opinnion of how or ifthis could work?Thanks in Advance,Steven
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Jul 21, 2006
Hello All,
I want to use SQLDataSource as a base of all Gridview in my application. I have read that SQLDataSource support caching.
I want to know as SQLDataSource is a child control of page class. It will get unloaded when page is unloaded. So how caching works. Like I am using SQLDataSource as base of my GridView control. When I perform paging or sorting,In theory It says that It will not hit the Datbase again. It will keep that Data in memory as DataSet, but this will stay alive upto life of page, which starts again and again when a page is requested, So as its child controls.
Can anybody give me more intrinsics on this.
Any Help from Microsoft is appreciated !!!!
Thanks !!
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Nov 4, 2006
I know I can use the SqlDataSource object and cache the results by setting it's enableCache property to true, but what if I am using essentially the same SqlDataSource control across multiple pages? For instance I have a States SqlDataSource on many pages in my site, if I enable caching on all of these objects won't they all be cached separately? Is the solution to not use the SqlDataSource and instead cache the datatable of results and bind the dropdownlists to that? Thanks in advance.
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Nov 9, 2006
Hi Expert, Am I doing it right? Can you give me any suggestions please? Thank you!!I followed the way for setting up the sql cache dependency from http://quickstarts.asp.net/QuickStartv20/aspnet/doc/caching/SQLInvalidation.aspx.However, I still have the following error:
When using SqlDependency without providing an options value, SqlDependency.Start() must be called prior to execution of a command added to the SqlDependency instance.
IssueSummary.aspx<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="IssueSummary.aspx.vb" Inherits="IssueSummary" title="Issue Summary" %><%@ Register Assembly="AtlasControlToolkit" Namespace="AtlasControlToolkit" TagPrefix="cc2" %><%@ Register Assembly="Microsoft.Web.Atlas" Namespace="Microsoft.Web.UI" TagPrefix="cc1" %><%@ OutputCache Duration="999999" VaryByParam="None" SqlDependency="CommandNotification" %>
Global.asaxSub Application_Start(ByVal sender As Object, ByVal e As EventArgs)Dim connectionString As String = ConfigurationManager.ConnectionStrings("ICTConnectionString").ConnectionStringDim needToInstall As Boolean = TrueTryDim tables() As Stringtables = SqlCacheDependencyAdmin.GetTablesEnabledForNotifications(connectionString)If (Not tables Is Nothing) ThenDim tbl As StringFor Each tbl In tablesIf (tbl.ToLower().Equals("IssueDetails")) ThenneedToInstall = FalseEnd IfNextEnd IfCatch ex As ExceptionneedToInstall = TrueEnd TryIf (needToInstall) ThenSqlCacheDependencyAdmin.EnableNotifications(connectionString)SqlCacheDependencyAdmin.EnableTableForNotifications(connectionString, "IssueDetails")End IfEnd Sub
Web.config<connectionStrings><add name="ICTConnectionString" connectionString="Data Source=jamesle-3;Initial Catalog=IssueCommunicationTool;Integrated Security=True" providerName="System.Data.SqlClient"/></connectionStrings><system.web><caching><sqlCacheDependency enabled="true" pollTime="1000" ><databases><add name="ICTDB" connectionStringName="ICTConnectionString" /></databases></sqlCacheDependency></caching>
SQL Server 2005 - Database - IssueCommunicationToolSELECT is_broker_enabled FROM sys.databases WHERE name = 'IssueCommunicationTool'
Return = 1, it means the broker service is enabled. Also, the database has created the table ASPNET_SQLCacheTableForChangeNotification, the trigger in IssueDetails table, and some other store procedures.
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Nov 24, 2006
Hello, I have caching enabled in my application and I am using SqlCacheDependency to cache my tables. Well, the cache works fine but when the table is updated the information in my cache does not update. I DO have the broker service started and running but not sure what else i am missing. I am using sql server 2005.
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Jan 16, 2007
I have a control that shows the top 5 best selling products. Thes list does not need to be up to date at all times. Ideally I would like to cache the data for say 24hr before pulling it again if someone accesses the control. I thought there was an easy way to do this, but I can't seem to find anything. Can anyone point me in the right direction.
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Jun 25, 2007
Hi, I'm trying to set up a SqlCacheDependency using the Query notifications of SQL Server 2005.
I haven't even got to the point of testing the notifications part. My problem is that my DataTable is not
even getting stored in the cache when I insert it. The cache seems to be getting invalided as soon
as I add the DataTable. Here is my code:
(am trying to get a simple example working first)protected void Page_Load(object sender, EventArgs e)
{ DataTable results = (DataTable)HttpRuntime.Cache.Get("supplyFunctions");
if (results == null)
{ Response.Write("Cache Invalidated, hitting DB. TIME: " + DateTime.Now.ToString());
results = getSupplyFunctions();
}
else
{ Response.Write("got from Cache, TIME: " + DateTime.Now);
} GridView1.DataSource = results;
GridView1.DataBind();
}private DataTable getSupplyFunctions()
{ DataTable results = new DataTable(); using (SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ToString()) )
{ using (SqlCommand command = connection.CreateCommand())
{
command.CommandText = "schema.myStoredProc"; command.CommandType = CommandType.StoredProcedure;
SqlCacheDependency dependency = new SqlCacheDependency(command); SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = command; DataSet dataset = new DataSet();
adapter.Fill(dataset);
results = dataset.Tables[0];
HttpRuntime.Cache.Insert("supplyFunctions", results, dependency);
}
} return results;
}
Also, whats weird is that when I keep refreshing the page, after like 5 to 10 minutes it works, and starts caching the data.
This disturbs me-- I would like to know what is going on. I am pretty sure my stored procedure doesn't break the rules of the query notifications. Can someone help me out?!??!
Thanks!
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Jul 31, 2007
Question for all Cache Gurus
I have a page in my website that pulls content for a
newsletter from a SQL Server 2000 database using a SqlDataSource and a
FormView. I add a new newsletter every week. Other than that weekly addition,
no changes are really ever needed or made to the data. Scott Gu says every
application can and should make use of caching and I would like to add some
kind of caching to improve the performance of this page. I have read about SqlCacheDependency with SQL
2000, but if I understand it correctly, it will poll the database for changes
every x seconds, an expensive operation that I just don’t need; the data only
changes once a week. I’ve seen some code examples using DataSets and the Cache
API but I’m really just looking for a simple, mostly declarative solution using the
SqlDataSource. Theoretically, I would
like the data cached forever until I insert a new item. I have set the
following cache-related properties on my SqlDataSource as follows:
EnableCaching = TrueDataSourceMode = DataSetCacheDuration = InfiniteCacheExpirationPolicy = Absolute
Setting these properties seems to work great for caching the
data but how do I programmatically invalidate the cache when a new item is
inserted? I have a separate admin page with a FormView that I use to insert the
newsletter each week. Is there some kind of code that I could put in the
ItemInserted event that would invalidate the cache so that the new item will be
displayed and then cached? I don't have any experience with caching; where am I going wrong? Are my expectations unrealistic? Thank you in advance to anyone who can shed some
light on this issue.
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May 14, 2008
I've recently deployed an ASP.Net application, with admittedly not a lot of experience with SQL Server 2005 caching.A problem that I ran into is a user searching for a case number very soon after entering it, and it not showing up. However, after a few minutes and re-running the search it appeared.I'm guessing that this is a SQL Server caching issue, but I'm not sure what to do about it.On my search screen, I have a listview for the results, a textbox for the case # input, a button and a sqldatasource. The SqlDataSource uses a select statement, and two parameters for user(ensure the case belongs to that user) and casenumber. The SqlDataSource has enablecaching set to false. Any ideas what I can do about this issue? Also, any good places I can read about sql server caching? Thanks
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May 9, 2007
I'm trying to performance tune a procedure and am sort of being thwarted by caching.
When I first run the procedure, it takes a few seconds which is too long in this case. Subsequent executions in Management Studio are nearly instantaneous, though, which I imagine is due to caching and does not reflect the behavior of the procedure in production.
Is there a way to disable caching so that each execution of the procedure in Management Studio will be consistent and reflect the "first run" performance?
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