How Use Stored Procedures In Multi-user Environment?
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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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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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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Jan 29, 2008
Hi,
I have a small requirement because of which i am facing some migration problems.
For changing the variables say InitialCatalog and Custom logging destination path, i am making use of XML configuration files. Till here i have no issues.
But problem starts here. Basically DTS package is called by calling a stored procedure from a front end application.
Within the stored procedure the package location say (D:Packages<packagename.dtsx>) is being hard coded due to which i need to change the package
location paths each time when i am migrating the stored procedures to Testing and Production environments.
Is there any efficient way of avoiding the hard coding of the package paths using Windows Environment vars or something else.
If so please help me out.
Any help would be greatly appreciated.
create procedure spexecDTS_Pkg
@g_p1 varchar(50),
@g_p2 varchar(50)
AS
declare @jid uniqueidentifier
declare @cmd varchar(4000)
SET @cmd = '"C:Program FilesMicrosoft SQL Server90DTSBinnDTExec.exe" /F "D:Packages est.dtsx" '
SET @cmd = @cmd + ' /SET "Package.Variables[User::userid].Properties[Value]";'+'"'+@g_p1+'"'
SET @cmd = @cmd + ' /SET "Package.Variables[User::cname].Properties[Value]";'+'"'+@g_p2+'"'
DECLARE @jname varchar(128)
SET @jname = cast(newid() as char(36))
-- Create job
exec msdb.dbo.sp_add_job
@job_name = @jname,
@enabled = 1,
@category_name = 'Samples',
@delete_level = 1,
@job_id = @jid OUTPUT
exec msdb.dbo.sp_add_jobserver
@job_id = @jid,
@server_name = '(local)'
exec msdb.dbo.sp_add_jobstep
@job_id = @jid,
@step_name = 'Execute DTS',
@subsystem = 'CMDEXEC',
@command = @cmd
-- Start job
exec msdb.dbo.sp_start_job
@job_id = @jid
Thanks in advance.
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Sep 23, 2014
Disaster Recovery Options based on the following criteria.
--Currently running SQL 2012 standard edition
--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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Jan 28, 2004
hi,
I want to execute two user created stored procedures in a multithreaded manner in ms-sql server . Can some tell me how i can do that.
Thanks in advance.
Regards,
Manpreet
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Jul 23, 2005
Hi all,What I am trying to do is generate a stored procedure that is desiredto output XML in this type of format<Parent Device><Device><Device ID>1</DeviceID><ChildRegister><ChildRegisterID>22</ChildRegisterID></ChildRegister></Device><Device><Device ID>2</DeviceID><ChildRegister><ChildRegisterID>23</ChildRegisterID></ChildRegister></Device></Parent Device>The area of concern is the child register, the XML being generateddisregards the Device the ChildRegister belongs to and always places itas elements of the last device.<Parent Device><Device><Device ID>1</DeviceID></Device><Device><Device ID>2</DeviceID><ChildRegister><ChildRegisterID>23</ChildRegisterID></ChildRegister><ChildRegister><ChildRegisterID>22</ChildRegisterID></ChildRegister></Device></Parent Device>I am trying to produce XML like the first one I described and have yetto discover a way of associating the ChildRegister with the parentDevice in XML. I am not sure if it is a limitation of SQL Server, or ifmy implementation is incorrect. If anyone could post hints orsolutions, I would greatly appreciate it.A shortened version of the stored procedure is belowCheers :)AlvinSELECT1AS TAG,NULL AS PARENT,NULL AS [Device!2!DeviceID!element],NULL AS [ChildRegister!3!RegisterID!element]FROM udetails INNER JOINDetail ON udetails.ID = Detail.IDWHERE (uDetails.JobID = @ID)UNION ALLSELECT2 AS TAG,1 AS PARENT,TempTable.DeviceIDAS [Device!2!DeviceID!element],NULL AS [ChildRegister!3!RegisterID!element][color=blue]>From #Temp as TempTable INNER JOIN[/color]device ON TempTable.DeviceID = device.DeviceIDUNION ALLSELECT3 AS TAG,2 AS PARENT,NULL AS [Device!2!DeviceID!element],RegisterID AS [ChildRegister!3!RegisterID!element]FROM #Temp t INNER JOINregister ON t.DeviceID =register.DeviceIDFOR XML EXPLICIT
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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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Nov 30, 2006
is there a sql query i can type in to list all the user stored procedures for the tables within my database?
or do i have to find them manually and how?
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Jul 10, 2007
Dear all,
How to find out how many user stored procedures are there in a single Database in sql server.
Thanks,
msrs
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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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Feb 1, 2005
Hi There,
I've written an inline table-valued function in SQL such as the following:
ALTER FUNCTION dbo.GetCityByID( @CityID int)
RETURNS TABLE
AS
RETURN(
SELECT
Name,
Url
FROM Cities
WHERE (CityID = @CityID) )
suppose that Cities table includes three fields (CityID, Name, Url).
By the way I wrote a store procedure as follow:
ALTER PROCEDURE MyProcedure ( @MyID int)
AS
SELECT
CountryID,
OriginCityID,
DestCityID
FROM
MyTable
WHERE (MyID = @MyID)
The OriginCityID and DestCityID are related to CityID in Cities table. I wanna get the name
and url of each city by its ID through this stored procedue by making relation to Cities table.
so I call GetCityByID function in my stored procedure like this:
ALTER PROCEDURE MyProcedure ( @MyID int)
AS
SELECT
CountryID,
dbo.GetCityByID(OriginCityID),
dbo.GetCityByID(DestCityID)
FROM
MyTable
WHERE (MyID = @MyID)
this procedure dosn't work an returns error.
What's your solution for getting information from Cities table for OriginCityID and DestCityID?
Thank you in advance.
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Jun 12, 2015
user have db_datareader role in in a database.But user is not able to see the stored procedures.
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Nov 6, 2007
I'm new to 2005 (new to sql server in general). Up until now it's only been writing easy stored procedures. Read that it's a good idea to have a user who can only run stroed procedures (so aren't connceting with 'sa' privileges and such). How would I go about doing this?
The server I am working on has about 15 different databases on it. My database (named "myDBForTest") is the only one I want my end user to be able to connect on. I'm writing a .NET application that will have several users using it at same time. They will all be connecting with same information (limited to only running stored procedures and connecting/disconnecting). I basically want them to be able to run any stroed procedures that are part of my database. If I go back in 4 months and add 100 stored procedures, the next time the log on they should be able to use those new ones also.
Is there some kind of command I run to add a user (maybe with username of sprocUser?) who can do this? I'm interfacing with database using SQL Server Management Studio Express (from MS).
Thanks for any help you can give.
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Jun 2, 2007
Hi,
I presume the two problems I have are actually one. (hopefully)
I copied my database from my client machine, to a small business server when I deployed the application.
When I ran the program, where it called up a stored procedure, I got an error message
The EXECUTE permission was denied on the object 'Empty Temp Tables' database datbasename, schema 'dbo'
The procedures are there and visible in the Visual Studio IDE and they were there in the Sql Data directory, from where I copied the database files. I checked this from Management Studio on the client machine.
I decided to check my stored procedures in Management Studio on the server, and it seems the whole folder is missing.
Help would be appreciated
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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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Jun 1, 2004
Hello all:
Running into a brain problem here. I remeber reading an article a while back (2002?) on either Visual Studio Magazine or MSDN Magazine where there was a way to generate Stored Procedures from User Defined Functions. I need this information in order to do my job as it is also a way to cut down on time for this project I am trying to finish. Does anyone have the code or remeber what I am talking about. I just finished Kathleen Dollards article again on using XSLT to generate code but would really like to use the User Defined Functions.
I searched for the article on line but came up dry. Searched through all my magazines but could not find the article. Any help would be greatly appreciated. Bit of topic I guess but still relevant to the board.
Thanks
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Sep 25, 2015
How can I allow a user to run a stored procedure but deny them the ability to see it in SSMS?
I don't mean 'view def' permissions, I mean the actual proc.
I read about encryption which mask the contents but they can still see the proc, any other ways I can accomplish this?
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Feb 4, 2006
What are the pros and cons of each?
One advantage that I can see withh UDFs is that they are a bit a Views with parameters. You can perform joins on UDF columns (which you cannot do with a Stored Proc). You can do the same with Views but UDFs have the advantage that you restrict the number of rows with a parameterised WHERE (or HAVING) clause.
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Jun 19, 2008
Hi to all, Can any body tell me what is the difference between Stored procedures and User Defined Functions ? In my assumption Function return a value or table, but SP doesn't return value instead of that SP use select statement or assign value to output statement. This is right?
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Mar 13, 2001
I have defined a user defined data type. When I try to create a stored procedure specifying the column and user define data tpye I receive message
Server: Msg 2715, Level 16, State 3, Procedure spStoredproc, Line 0
Column or parameter #1: Cannot find data type udtcol1.
Server: Msg 2715, Level 16, State 1, Procedure spStoredproc, Line 0
Column or parameter #2: Cannot find data type udtcol2.
Server: Msg 2715, Level 16, State 1, Procedure spStoredproc, Line 0
Column or parameter #3: Cannot find data type udtcol3
Can you have user defined data types in stored procedures.
Store Procedure creation text
CREATE PROCEDURE spStoredproc
@col1 udtcol1,
@col2 udtcol2,
@col3 udtcol3
AS
INSERT INTO tblTempEmployee
(col1 , col2 , Col3)
VALUES (@col1 , @col2, @col3)
GO
SET QUOTED_IDENTIFIER OFF SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF SET ANSI_NULLS OFF
GO
Dave
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Apr 26, 2004
Can a user be granted the ability to create stored procedures with read only capabilities? I wouldn't mind be able to UPDATE but simply need to read only.
ddave
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May 6, 2014
We are using a third party tool that does not store passwords in an encrypted format therefore we created a user with minimal rights. Isn't there a way to grant "execute any stored procedure" to a user/Login? Do we really have to grant execute on each procedure to the user? And then do the same for each new store procedure? The only other option we have found to be able to "see" and execute the stored procedures is by granting "db_owner". I would think that would negate the user being minimal rights.
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Sep 3, 2007
Hi,
I have a problem with sp execution.:
objects of [dbo]
Tables of [nuran]
Grants of [nuran]
[dbo].tabloA
[nuran].tmptabloA
Select,insert, update on [dbo].tabloA
[dbo].tmptabloA
Deny for [dbo].tmptabloA
[dbo].sp_yordam
Grant for executing [dbo].sp_yordam
(1)
create PROCEDURE [dbo].[SP_yordam]
AS
BEGIN
BEGIN TRANSACTION @Tran1
¦¦¦¦¦. ¦¦¦¦¦¦ ¦¦¦¦.
INSERT INTO [tabloA]
(, ,)
SELECT ,,
FROM [tmptabloA] WHERE ......
¦¦¦ ¦¦¦ ¦¦¦.
DELETE FROM [tmptabloA]
COMMIT TRANSACTION @Tran1
When user [nuran] execute the procedure sp_yordam by a VB program, the procedure use [dbo].tmptabloA not [nuran].[tmptaboA]. If there are data in the [dbo].tmptabloA, the procedure insert data to [dbo].tabloA from [dbo].tmptabloA. But when I checked user name in the procedure during execution, the user was [nuran].
If I write the procedure like that:
(2)
create PROCEDURE [dbo].[SP_tmpSil]
AS
declare @tablo1 as varchar(50),
DECLARE @sil as nvarchar(max)
select @tablo1='[tmptabloA]'
SELECT @sil = ' DELETE FROM ' + @tablo1 + ';'
EXEC (@sil)
END
And it executed by user [nuran],then it used the correct table [nuran].tmptabloA
Is there any way to use users table in an stored procedure without using the user name :
(3)
create PROCEDURE [dbo].[SP_yordam]
AS
BEGIN
BEGIN TRANSACTION @Tran1
¦¦¦¦¦. ¦¦¦¦¦¦ ¦¦¦¦.
INSERT INTO [tabloA]
(, ,)
SELECT ,,
FROM [nuran].[tmptabloA] WHERE ......
¦¦¦ ¦¦¦ ¦¦¦.
DELETE FROM [nuran].[tmptabloA]
COMMIT TRANSACTION @Tran1
I don't want to use (2) and (3) code methods, I prefer to use (1) script. Is there any compilation method, or any aditional way for using script (1) with correct user rights?
Thanks a lot
Nuran
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Jul 22, 2007
Greetings,
We have recently begun using transactional replication to keep the data in our SQL Servers synchronized in a geographically dispersed environment. We replicate our tables but we have never replicated views, stored procedures, or user functions in our production systems. We are thinking of doing so but wonder if the overhead of running the replication agents doesn't outweigh the benefits of having replication assist with the occassional change to these design elements.
Is anyone on this forum replicating views, sprocs, and user functions? What has your experience been?
Thanks for any ideas that you share.
BCB
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Jul 26, 2007
I have user XY in SQL 05. I would like to find all stored procedures, where user XY has permission for executing. Is there any way to find it than look in every stored procedure?
Thanks for tips
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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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Sep 22, 2015
disable the following system stored procedure (xp_grantlogin and xp_revokelogin)?
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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]
I am looking to follow the topology example by the letter, which involves installing PowerPivot for SharePoint (aka SSAS in SharePoint mode) in the same server as my SQL, and installing SSRS in SharePoint (SP) integrated mode in the same server as SharePoint.
I understand, however, that if I wanted to install SSRS in SP mode in the same server as SQL, I could but only if the server contains the SP Object Model.
My first question is, what would involve having the SP Object Model in the SQL Server?
Would only installing SP binaries be enough; or Do I need to do a minimal install of SP in the SQL server enough for it to joing the SP farm? And most importantly, what would be the licensing implications for SP in case I want proceed down this route and have SSRS in SharePoint mode installed in the same server as the SQL?
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Aug 7, 2007
Hello All,I tried to set the access permissions for debugging stored procedure by reading the articlehttp://msdn2.microsoft.com/en-us/library/w1bhybwz(VS.80).aspxandhttp://technet.microsoft.com/en-us/library/ms164014.aspxI have tried to add the role to sysaminas follows1)SELECT * FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_NAME = 'sp_sdidebug'(to find the sp)Error:--The stored procedure not found2)sp_addsrvrolemember 'Developmentswati.jain', 'sysadmin' though this is executed successfuly . Error is still persisting
Cannot debug stored procedures because the SQL Server database is not setup correctly or user does not have permission to execute master.sp_sdidebug.
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Feb 4, 2008
the stored procedure don't delete all the records
need help
Code Snippet
DECLARE @empid varchar(500)
set @empid ='55329429,58830803,309128726,55696314'
DELETE FROM [Table_1]
WHERE charindex(','+CONVERT(varchar,[empid])+',',','+@empid+',') > 0
UPDATE [empList]
SET StartDate = CONVERT(DATETIME, '1900-01-01 00:00:00', 102), val_ok = 0
WHERE charindex(','+CONVERT(varchar,[empid])+',',','+@empid+',') > 0
UPDATE [empList]
SET StartDate = CONVERT(DATETIME, '1900-01-01 00:00:00', 102), val_ok = 0
WHERE charindex(','+CONVERT(varchar,[empid])+',',','+@empid+',') > 0
TNX
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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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