Temporary Tables In Multi User Environment
Feb 6, 2004
Hi,
I am developing reporting application (access project) which will be used in multi user environment.
Here is what I have:
1 SQLServer database for many users
Each report will be based on:
stored procedure which creates a table filtered for specific dates predefined views will use the newly generated table to show results to the client. However, if more than 1 person runs reports results will not be accurate if each person specified different dates because they will look at the same table and results will match only for a user who called the stored procedure last.
what can you recommend - how to report in multi user environment?
Many thanks
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Apr 19, 2007
Hi!
In my database I have all business logic in stored procedures. For example there are procedures: ReadBike and UpdateBike. Bike is business object stored in 4 tables.
On my system work 100 employees and we have one problem with this. The stroy is;
1. User A reads data about Bike1
2. User B reads data about Bike1
3. User A updates data about Bike1 (user B have old data)
4. User B updates data about Bike1
So user B don't know about chnages made by user A. How to solve that ptroblem?
It's probably solved in ADO, but I want use business login in procedures.
Regards,
Walter
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Jan 20, 2007
I was wondering if you guys might give me some advice on how best to handle a particular scenario i'm struggling with.
I have a client that basically wants web-based-update access to their sql server database. Specifically, for a group of users to be able to access a page where they select a record for editing. the caveat is that no two users should be able to pull up the same record at the same time. Originally I would have thought there was some easier record-locking-mechanism I could exploit within sql server or ado.net itself, but I haven't been able to come up with anything.. so this is my current approach:
The page they use starts-out with basically a blank form. there are custom-built paging controls at the bottom of the screen. they click page-forward to begin and a stored procedure is ran to select a record and update a field on that record to indicate "in-process". when they finish editing the record - or page on to the next record without updating - another stored procedure is ran - updating/resetting the status field on the record appropriately.
The entire page is encapsulated within an ajax.net updatepanel.
The entire page has caching disabled. This works well in conjunction with the first page being blank. if they get out of the app and try to get back in by clicking the back button - all they can do is get to the first (blank) page.
A piece of javascript window.onunload clicks a button on the page that releases the record they currently have selected in the event of a re-direct, clicking back, etc.. it appears to work with everything except a window close. in that case, i have a stored procedure running periodically on the server that checks how long a record has been selected - and if it exceeds the time indicated - resets the record as to allow it to be re-selected later.
In the event of session timeout, they are redirected to another page that tells them their session has timed-out (and since the window.onunload fires - it takes care of releasing the record if they have one on the screen).
The concept seemed to be working well until I started multi-user testing. Now it seems as if two users time it perfectly - they are actually able to both select the same record. it happens pretty rarely, but it does seem to happen. I'm guessing this has to do with how my stored procedure is structured - possibly allowing a tiny-enough window between the record being selected for editing - and the update running to actually status the record as in-process (2 separate sql statements within the one stored procedure).
I believe I also have a found a second quirk in my approach where something is causing the window.onunload event to fire twice in some strange situations.. but that's more annoying/confusing from a logging standpoint than anything..
I've read where people say to ensure you dont update a record that's already been updated - that you should compare the fields before you actually perform the update and ensure they haven't changed since you selected it.. but to me that doesn't solve anything.. if two people select the same record and both spend time working on it - the person that tries to update last has just wasted their time.
I've also toyed with the idea of maintaining a separate table in the database to hold the keys to the currently selected records and use that to keep multiple people from selecting the same record - but honestly i dont know if that approach is any better than what i'm doing now.
anyway, I was just curious if you guys had any advice in regards to how you'd handle a request like this.. or if you see any obvious problems/fixes with my current approach..
I would greatly appreciate any info you could provide-
thanks-
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Mar 10, 2006
Hiya,Is there really no way to use temporary tables from within a UDF? Ilike UDFs because I can use them like a table -- e.g., SELECT row1,row2 from MyFunc('abc')
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Sep 23, 2014
Disaster Recovery Options based on the following criteria.
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--We have 18000 databases (same schema across databases)- majority of databases are less than 2gb-- across 64 instances approximately
--Recovery needs to happen within 1 hour (Not sure that this is realistic
-- We are building a new data center and building dr from the ground up.
What I have looked into is:
1. Transactional Replication: Too Much Data Not viable
2. AlwaysOn Availability Groups (Need enterprise) Again too many databases and would have to upgrade all instances
3. Log Shipping is a viable option and the only one I can come up with that would work right now. Might be a management nightmare but with this many databases probably all options with be a nightmare.
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Oct 1, 2007
We are currently managing about 75 SQL Server instances. Each instance contains jobs (backups, index work, admin, etc) which report back to a central instance for monitoring. This is working well, but each time I need to change one of the jobs, I am having to log into each instance to do so.
I have recently played with Multi-server Environment, using a master and target, to see if this might help. There is relatively little written about Multi-server in books-online, and I am left with a question.
All jobs appear to be exact duplicates. But I don't want exact duplicates. For example, on the various target servers, I would like for the backup jobs to run at different times, and write to different directories. How are the rest of you working around this situation, if you are using Multi-server Environment?
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Jan 6, 2004
My company uses a quad processor server connected to a SAN to load and summarize detail sales information from 2000 stores on a nightly basis. We poll and load around 5,000,000 rows of data each night. THis information is summarized up to various levels, then replicated to one or more secondary datamart servers for end user access via web reporting, BI tools like Proclarity/Analysis Services etc...
The initial data polling server is only touched by the development staff supporting the process (1-5 programmers) and is licensed for SQL server Enterprise using a CAL model. Each datamart server is licensed with MS SQL server processor licenses.
The question: We were told that the quad processor polling machine, which has no end user access allowed, must be licensed with processor licenses since it touchs the data ultimately consumed by end users. This makes no sense to me.
The Microsoft white papers discussing multi_tier environments don't seem to address this type of issue. They focus on applications that ultimately pass thru a data request to the SQL server machine. In this situation, user requests are handled by the datamart servers, which are licensed with processor SQL licenses.
Can anyone clarify?
Thanks, Mike
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Nov 27, 2006
I am currently working on a project in which I am using SqlTransaction objects with their IsolationLevel set to Serializable. I am wondering what would be the effect if multiple threads were to call this code at the same time? Would the second transaction (created by the second thread on the same connection), for example, be queued until the first one (created by the first thread on the same connection) finishes? Or would an exception be thrown for the second transaction? In case an exception is thrown, would using the synchronization (locks) around critical sections solve the issue?
I guess it is easier to understand the scope of transactions in terms of multiple users, but it is confusing (for me) when I start thinking in terms of multiple threads. The underlying data is held in a single table and the scope of the transaction spans multiple SELECTs and an UPDATE or an INSERT.
I have been trying to find a feasible answer, and haven't found anything credible yet. Help!
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Mar 27, 2006
Hi,
I want to join a temporary table with a table in my stored procedure :
CREATE PROCEDURE sp_DeltaabgleichDarlehen
AS
BEGIN
SELECT Grundeinstellungen.Dat_Initialisierung, Grundeinstellungen.Dat_Jahresbeginn
INTO #temp_IniDatum
FROM Grundeinstellungen
INSERT INTO DeltaDarlStammdaten (Datum, Vertragsnummer)
SELECT ImpDarlStammdaten.Datum, ImpDarlStammdaten.Vertragsnummer
FROM ImpDarlStammdaten
WHERE ImpDarlStammdaten.Datum=#temp_IniDatum.Dat_Jahresbeginn
END
i get the error :
The multi-part identifier "#temp_IniDatum.Dat_Jahresbeginn" could not be boundfor example
What is the problem? and how can i solve this?
thank you
Jupp
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Mar 27, 2007
My product is growing rapidly and currently I have a db for each client with identical schema. Of course maintenance is pretty hard. I was thinking of using a shared db but having a schema for each client (sql 2005) - I have almost 100 tables in the schema which means with just 10 clients the db would pass 1000 tables. My gut is telling me this ain't going to fly!any ideas? and if it does work ... any thoughts on updating the internal schemas for each client?thanks-c
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Oct 19, 2006
Hello--
Is it possible to install/configure SQL-Server 2005 on a multi-processor machine so that the relational DB utilizes a given subset of processors while Analysis Services utilizes another subset?
Thanks,
- Paul
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Aug 17, 2015
I am setting up sharepoint and sql server integration environment. I am considering the following topology: PowerPivot for SharePoint 2013 and Reporting Services in SharePoint mode Two Server Deployment
[URL]
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My first question is, what would involve having the SP Object Model in the SQL Server?
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Oct 5, 2007
Firstly I consider myself quite an experienced SQL Server user, andamnow using SQL Server 2005 Express for the main backend of mysoftware.My problem is thus: The boss needs to run reports; I have designedthese reports as SQL procedures, to be executed through an ASPapplication. Basic, and even medium sized (10,000+ records) reportingrun at an acceptable speed, but for anything larger, IIS timeouts andquery timeouts often cause problems.I subsequently came up with the idea that I could reduce processingtimes by up to two-thirds by writing information from eachcalculationstage to a number of tables as the reporting procedure runs..ie. stage 1, write to table xxx1,stage 2 reads table xxx1 and writes to table xxx2,stage 3 reads table xxx2 and writes to table xxx3,etc, etc, etcprocedure read final table, and outputs information.This works wonderfully, EXCEPT that two people can't run the samereport at the same time, because as one procedure creates and writesto table xxx2, the other procedure tries to drop the table, or read atable that has already been dropped....Does anyone have any suggestions about how to get around thisproblem?I have thought about generating the table names dynamically using'sp_execute', but the statement I need to run is far too long(apparently there is a maximum length you can pass to it), and evenbreaking it down into sub-procedures is soooooooooooooooo timeconsuming and inefficient having to format statements as strings(replacing quotes and so on)How can I use multiple tables, or indeed process HUGE procedures,withdynamic table names, or temporary tables?All answers/suggestions/questions gratefully received.Thanks
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Feb 27, 2008
I am using SharePoint Services 3.0 (SP1) with default configuration options, which installs the Microsoft##SSEE instance of SQL to my local C: drive.
While attempting to relocate the files to another drive, I set one of the databases (as recommended) to Single User by using the SQL Server Management Express tool.
I cannot now reset that database to Multi User, even by executing the query
exec sp_dboption 'database_name', 'single user', ''FALSE'
again by using the Management Express Tool.
Can someone please help, in plain english???? Thanks
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Nov 11, 2002
Do you guys know how to fix this error?
windows cannot find the local profile and is logging you on with a temp profile? how do you get around this? Thanks.
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Jun 21, 2004
I have written a VB/SQL Server based application. The application uses stored procs and the SQL Server security model to handle logins and permissions. My partner and I want to sell the applicaiton to specific businesses and offer a rental program for smaller companies that would like to use the application to connect to an internet based database. The application uses TCP/IP with a specific port number to connect to the database so it can be used in or out of LAN.
If we rent the application, maintenance is simple. I just create a user in the database with the login/password the user would like and viola they have access to the data.
When a company wants to purchase the program to use in-house, we would like to offer two alternatives: #1 a single user or #2 a multiple user SQL Server database.
My question is if a company purchases the single-user version, how can we keep them from adding users to their database. In other words, since we have no control over the database at the client's location, how can we ensure that it remains a single-user database?
Thanks for any help!
Randall Medcalf
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Mar 15, 2004
Can you create a temporary table using an ad-hoc query?
What I am trying to do is a type of filter search (the user has this and this or this) were i will not know how may items the user is going to select until they submit....that is why i can't use a stored procedure(i think)....any help on how to do this?
Thanks,
Trey
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Sep 12, 2004
Hi could anyone give me a hint what does term "temporary table" mean regarding sql server?
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Nov 7, 2005
Hi all,
how can i execute this query without errors??
create table #luca(c int)
drop table #luca
select * into #luca
from anagrafica_clienti
The error lanched is:
Server: Msg 2714, Level 16, State 1, Line 6
There is already an object named '#luca' in the database.
Why if i drop the table?How can i do?Thanks guy
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Jan 15, 2007
Afternoon.
I'm having trouble with a query and ASP. The query itself is easy. I need a temporary table to be filled with the contents of a select and then i need to select out of the temporary table and return the results to the ASP.
So:
Code:
DECLARE @RESULTS TABLE (
ItemID int,
ItemDescription char(50),
ItemType int,
ItemRequestedBy char(50),
ItemStatus int,
ItemQuantity int,
ItemCostPer money,
ItemOrderNumber int,
DateAdded smalldatetime,
DateLastEdited smallDateTime
)
INSERT into @results (ItemID, ItemDescription, ItemType, ItemRequestedBy, ItemStatus, ItemQuantity, ItemCostPer, ItemOrderNumber, DateAdded, DateLastEdited)
SELECT * from cr_EquipmentData
SELECT * from @results
When I run this in Query Analyser, I get exactly the results I need... But when I try and run the ASP script, I get an error about the recordset not being open. (It's not the ASP checking 'cos when I run a simple select statement it works)
I appreciate there is no use for the query as it stands, but eventually I want to be able to perform not destructive statements on the @results table before returning the data to ASP. This is more 'testing' than anything at the mo'
Has anyone got any ideas?
Thanks...
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Apr 14, 2004
I am writing a stored procedure that outputs it's information to a temporary table while it assembles the information. Afterwards, it returns the contents of the temporary table as the results of the stored procedure.
I found that if you create the table, inside the SP, as an ordinary table, the information builds to that table considerably faster than if you use a true temporary table.
I found that if I create a user function that returns a table as it's return value, it is also as slow as if I used a true temporary table.
The database can amass over 2 million records in one table in just a few days. If I have the procedure query against this table, and output to an ordinary table it creates, and summarize the information it is adding to the table, then it takes an average of around 4 minutes to return the results from the query. If I change the output table to a temporary table (#temp), it between 12 and 15 minutes. Nothing else in the procedure changed. Just the kind of table. If I take the logic and move it to a function which returns those results in a RETURN table, it also takes over 14 minutes.
Why would it take so much longer outputing to a temporary table rather than a normal table? Is it because temporary tables are stored in a different database (tempdb)? Why would returning query results from a function be just as slow?
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May 25, 2004
How can I view logs of local (to a session) temporary that are created/dropped?
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Aug 21, 2007
Hi,
I am trying to join two tables usig two temporary tables.I want the Output as table2/table1 = Output
Select temp2.Value/temp1.Value as val
from
(
(
select count(*)as Value from [Master] m
inner join [Spares]s on s.SId=m.SID
where m.Valid_From between '2007-06-01' and '2007-06-30'
)temp1
Union
(
select isnull(sum(convert(numeric(10,0),s.Unit_Price)),'0') as Value
from [Order] h
inner join [Spares] s on s.Number = s.Number
where h.Valid_Date between '2007-06-01' and '2007-06-30'
))temp2
as t
I could not find the output..
Plz help me..
Thanks..
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Nov 2, 2007
Hello,
Our java application is running on oracle and now we would like to port it to sql server 2000. In oracle we have a global temporary tables that has an option on commit to delete rows.
Now I am looking for the same option in sql server but as far as I can see sql server's local temporary tables are visible per connection. Since the connection are shared in the pool it seems I can not rely on local temporary tables since the connection does not get closed at the end of the user's session. I need something that is visible per transaction not per connection.
Is it a better approach just to create a regular table and basically have a trigger to delete all data on commit?
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Jul 20, 2005
If a stored procedure invokes another stored procedure that creates atemporary table why can't the calling procedure see the temporary table?CREATE PROCEDURE dbo.GetTempASCREATE TABLE #Test([id] int not null identity,[name] as char(4))INSERT INTO #Test ([name]) VALUES ('Test')CREATE PROCEDURE dbo.TestASEXEC dbo.GetTempSELECT * FROM #Test -- Invalid object name '#Test'.Thanks,TP
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Jul 20, 2005
Hi, just a quick question regarding performance and speed.Q. Run a complicated query three times or create a TEMPORARY table andaccess it as needed?I have a page where it will be accessed 10,000+ a day.In that page I have an SQL query where it involves 3 different tables(approximate table sizes T1) 200,000 T2) 900,000 T3) 20 records)I'll be running that query 3 times in that page...One to retrieve the content and display it on the page.Second to count the number of records (using COUNT(*) function)And third to retrieve the content regions. (using DISTINCT function)What would be the best way of doing...Running the SQL query 3 timesOrCreate a temporary table and access it as many time as I needRegards,
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May 8, 2007
Hello,
I would like to know from other members whether they are successful in using temporary tables within a stored procedure and use that stored procedure in a report.
My scenario is like this:
I have a stored procedure A which fetches the data from different tables based on the orderno passed as input parameter.
I have built another stored procedure B with a temporary table created and inserting the rows in to this temporary table based on vendor related specifc orders by calling the above procedure A.
I have used this stored procedure in the dataset created and getting this error:
Could not generate a list of fields for the query. Check the query syntax, or click the Refresh Fields on the query toolbar.
Does anybody encountered this and have a resolution.
Thanks in advance.
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Dec 12, 2007
Hi All
declare @temp table
([EVENT_TYPE_ID] [int],
[Desc] [nchar](50) NOT NULL,
[Lead_Time] [smallint] NULL)
INSERT @temp
SELECT *
FROM TBL_EVENT_DEFINiTION
The table definition for @temp is the same as TBL_EVENT_DEFINiTION. The problem is I need to add a field to the @temp table and define the values using an update statement. If I include the additional field in the @temp table declaration then I get an error saying something to the effect of the number of fields is different. Is there a way of altering the temporary table to add this field?
Many thanks in advance
Alex
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May 15, 2006
Hello!
I'm creating a temporary table in a procedure to help me with some calculations. I would like the name of the temporary table to be 'dynamic', I mean, to have the hour it was created, something like this: create table #myTempTable15May11:10:00, so if someone access the procedure while it's running, he won't have problems in creating his 'own' temporary table (create table #myTempTable15May11:10:02). Is there anyway I can do this?
Thank you!
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Apr 26, 2007
Hello,
I tried to make a DTS to transform data in a text file, I used a Store Procedure that use a temp table (#Resultados) but the DTS give me an error.
I read that in this case I canīt use local temp tables but I can use global temp tables, then I changed in my Store, #Resultados by ##Resultados, bu the result was the same.
My Store is likely to his. Please help me.
INSERT ##Resultados (Planta, Etapa,GrupoEquipo,Equipo,Concepto,Fecha,Guardia,
Valor,idConcepto)
EXEC CalculosDiarios @Area,@Reporte,@FechaIni,@FechaFin,0
SELECT LEFT(RP.Grupo,3) + LEFT(RP.Equipo,12) + LEFT(RP.SubGrupo,2)
+ LEFT(D.Fecha,8) + D.Valor as Dato
FROM
ReportesPlantilla RP
LEFT JOIN
##Resultados D
ON
RP.Planta = D.Planta
AND RP.Etapa = D.Etapa
AND RP.GrupoEquipo = D.GrupoEquipo
AND RP.Equipo = D.Equipo
AND RP.Concepto = D.Concepto
AND D.Fecha BETWEEN @FechaIni AND @FechaFin
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Jul 23, 2007
Can some one tell me how to display the fields of temporary table in the report? In the query a global temp table is created and in the end i am displaying the fields of that table. How do i do that?
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Aug 9, 2007
Hi,
I have some questions regarding Temporary tables.
I need to use a temporary table within a stored procedure (which is a transaction), should I use local temporary table or global temporary table?
If I use a temporary table in my transaction, do I destroy the temporary table at the end of the transaction, or just leave it, and let the sytem clean it up? If I destroy the temporary table at the of the transaction, what happens if another user session is accessing the temporary at the very moment?
Thanks.
Cathie
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