Hi all,
I just want to know if SSCE 3.0/3.5 can cater for Multi-user instances? I have a desktop application that I want to allow multiple Windows-user accounts to access. basically I need a datastore that can be lightweight (which SSCE is) and support "User Instances" (like in SQL Server Express)
thanx!
When I am in Visual Studio 2005, and I try to add an SQL database, I get the following error "generating user instances in sql server is disabled. use sp_configure user instances enabled to generate user instances." I am currently using SQL server 2005 Express. What do I need to do, to create an SQL database? Thanks in advance.
View 4 Replies View RelatedDoes the SQL2K Developers Edition allow you to install/test/support multi instances?
View 1 Replies View RelatedDoes the SQL2K Developers Edition allow you to install/test/support multi instances?
View 1 Replies View RelatedIs it possible to install 2 SSAS instance (one default and one named) and have them access a single sql server instance (default) all on the same server?
View 3 Replies View RelatedI 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
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
Hi. I am trying to connect to a database but keep encountering the same error. I have a free hosting account with quantasoft (qsh.eu) who fully support SQL express user instances. I have also used the connection string generator on their site. This is the result of the error.
Cannot create file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase_log.LDF' because it already exists. Change the file path or the file name, and retry the operation.Could not open new database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'. CREATE DATABASE is aborted.Cannot attach the file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase.mdf' as database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'.File activation failure. The physical file name "C:Documents and SettingsJamesLocal SettingsTempVWDWebCacheftp_transmission.qsh.eu_wwwApp_DataDatabase_log.LDF" may be incorrect.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Cannot create file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase_log.LDF' because it already exists. Change the file path or the file name, and retry the operation.Could not open new database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'. CREATE DATABASE is aborted.Cannot attach the file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase.mdf' as database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'.File activation failure. The physical file name "C:Documents and SettingsJamesLocal SettingsTempVWDWebCacheftp_transmission.qsh.eu_wwwApp_DataDatabase_log.LDF" may be incorrect.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException (0x80131904): Cannot create file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase_log.LDF' because it already exists. Change the file path or the file name, and retry the operation.
Could not open new database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'. CREATE DATABASE is aborted.
Cannot attach the file 'H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase.mdf' as database 'transmission.qsh.eu_a45add63-33a4-4414-b09c-6880f10717b3'.
File activation failure. The physical file name "C:Documents and SettingsJamesLocal SettingsTempVWDWebCacheftp_transmission.qsh.eu_wwwApp_DataDatabase_log.LDF" may be incorrect.]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +437
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105
System.Data.SqlClient.SqlConnection.Open() +111
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +121
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +137
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +83
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1770
System.Web.UI.WebControls.Repeater.GetData() +50
System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +232
System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +53
System.Web.UI.WebControls.Repeater.DataBind() +72
System.Web.UI.WebControls.Repeater.EnsureDataBound() +55
System.Web.UI.WebControls.Repeater.OnPreRender(EventArgs e) +12
System.Web.UI.Control.PreRenderRecursiveInternal() +77
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Control.PreRenderRecursiveInternal() +161
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1360
------------------------------------------------------------------------------------------------------------------------------------------------------------------
When i remove the database= tag i get this
An attempt to attach an auto-named database for file H:HomeWebsqsh.eu ransmission_24be67cf-3e4c-4852-b3ec-fc849ce5b009wwwApp_DataDatabase.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
I have been developing and testing my app for some time without worrying about the question of user instances. Due to the nature of the app, I would want the database to be copied to laptops, where data would be added and then merged back into the "main" DB.
To facilitate this, when the (VB) app first installs, it copies the DB files from the data directory to an easily accessible folder which it creates in the C: drive (if they are not already there - to facilitate application upgrades).
The code is written and working. However, then I thought about user instances. With User Instance set to True, I suspect that this concept of a DB file created by a user on a given machine being readable by another user with a laptop is likely to fail (unfortunately I only have access to a single machine).
So I tried to change the User Instance to false (in the App.config file). This stopped the application from running. I checked in the Modify Connection (Advanced) screen which still showed User Instance to be True. I tried to change this but got an error message.
I can see a way around this, but I don't like it. I guess, rather than "export" the DB files to the laptop, I could send the data as an XML file. However, this seems to me to compromise security as it would be very easy for anyone to filter any actual data they wanted from such a file - unless there is a way to password protect an XML file?
So, is there any way that I can make these DB files (on the C: drive) available to any user, on any machine who is running the application so that they can import the data to their version of the App, add to it and then send the changes back to the original?
Thanks,
Rich
Hi,
So if the connection strings for say 2 separate users is configured for a user instance, what is the best approach to synchronising the user instances against each other and the Server instance?
This architecture suits remote users and I'm very interested to learn more about it.
Cheers,
John
I have a query that works fine in SQL Server,
SELECT TC.[TestId]
,TS.[NameId]
,[regressionLevel]
,Mstr.[MethodId]
,users.[UserId]
FROM [db_db].[dbo].[TEST] TC
join
[NEW_DB].[dbo].[Users]users
on
users.FirstName=TC.Username
join
[New_DB]..[Method_Master] Mstr
on
Mstr.Description=TC.Method
join
[New_DB]..[TestSource] TS
on
TS.Name = TC.TestName
basically there is a join between three tables to repalce all the varchars to the corresponding ID.
Please guide me in how should I go about in designing my SSIS package to achieve this requirement.
thanks in Advance
I have a general question relating to SQL Express User Instances. Our application connects to a local SQL Express database through the default SQLEXPRESS user instance. My question is simply whether a user may experience a problem in connecting to our application's database should another application already be connected through the same default user instance (SQLEXPRESS)? The two applications are therefore running similtaneously. Also, are there any limit to how many applications could use the same service similtaneously?
On first run, my app takes the blank database from the data directory and sticks it into a folder on the C: drive. Lets call this folder ABC for convenience.
Now, sometimes, we need to take this DB to use on another machine. So I have a "Guest" button available at logon screen of the app that allows the user to browse the file system and select a different DB to use then creates the appropriate connection string for say, a DB on a USB stick or wherever.
Con = "Data Source=.SQLEXPRESS;AttachDbFilename="
Con += OpenFileDialog1.FileName
Con += ";Integrated Security=True;Connect Timeout=30" ';User Instance=True"
No problems here, it works for Express Edition.
However, someone else who is trying to use the app has SQL 2005 (not Express Edition installed) and it wouldn't work because the connection strings had User Instance = True in them.
Okay then, we'll just remove that bit of the connection string and it should work. They should be an Admin so no reason for User Instances.
It works fine if we browse to any DB file other than the one in ABC folder.
However, it is impossible to connect to the DB in ABC folder unless User Instance is set to True.
Secondly; for the app to work with the non-express version, would the connection string need to be changed (SQLEXPRESS)? If so, how do you detect programmatically which version the user has?
Can anyone help please, in idiot proof terms!!!
Thanks,
Rich
Hi
We have developed an application that uses User Instances of the database for each user. We have a stored proc that enables and disables the triggers on the various tables of the database. In our first round of debugging we have found that the applciation hangs when we try to either enable or disable the triggers. Can you modify triggers in user instances???
Thanks
Kenzie
I couldn't reply the another thread so I'm continuing here.
Was about "Enable user SQL instances" and the Report Service didn€™t started too.
How do I enable this remote connections?
And in the instalation, Should I Add a user to the SQL Server Administration Role?
And also in the step "ready to install" of the SQL Server SP2 shows the following:
The following components will be installed:
· SQL Server Database Services (Upgrade)
(Database Services, Replication, Full-Text Search)
· Reporting Services
(Reporting Services, Report Manager)
· Client Components (Upgrade)
(Connectivity Components, Management Studio Express)
Warning: Setup found that the following components that already exist are at a different service pack level than the components being installed.
Components: Microsoft SQL Server 2005 Tools Express Edition, Microsoft SQL Server 2005 Express Edition (SQLEXPRESS)
After completing setup, you must download and apply the latest SQL Server 2005 service pack to all the components.
Hi,
I nearly went nuts before finding out that SqlExpress Names Instances don't listen on Port 1433. Having discovered that I now think I can nominate a specific port, is that correct.?
My main question. I copied my databases from my development machine to a server, which will be accessed from an internal domain, and also through VPN tunnels. Should I change from User Instances on the server, and if so, how do I do this.?
My original application wasn't using User Instances, but chnaged to them somehow, when my PC had a name change.
Tailor
HiI'm having no end of problems with Visual Web Developer and SQL Server 2005 Express Edition.
View 1 Replies View RelatedDear all,
to restore one perticular backup set, i've made the database to single user mode, now it is not accepting me to connect to that again...
how can i bring the database to multiuser mode?
thanks in advance
Vinod
Even you learn 1%, Learn it with 100% confidence.
I have recently returned to developing a website using Visual Web Developer Express 2008. I want to store information in a database. I have SQL Server 2005 Express edition installed on my pc.
When I try to Add New Item -> SQL Database from VWD2008 by right clicking in the App-Data folder and completing the dialogue I get the following error message:
Generating user instances in SQL Server is disabled. Use sp_configure ‘user instances enabled' to generate user instances.
I have SQL Server Management Studio installed but do not seem to be able to resolve this issue.
My operating system is windows XP Home SP2.
Some guidance on solving this would be appreciated.
Many thanks
Roger L
Is there any documentation on using full-text search with user instances? Is it even supported?
View 6 Replies View RelatedI am attempting to restore a backup of a 2008 R2 database to my new 2012 instance. I am receiving the message, "FILESTREAM feature is not supported on user instances."Â I am running v11.0.5343.0 (X64), Express Edition.I was under the impression from the features supported page [URL] .... that FILESTREAM was supported across editions. I can't seem to find anything online specific to 2012 as to why I am not able to restore.
View 5 Replies View RelatedI would like to have more info on UserInstances concept of SQLExpress 2005.
Can i find any code samples for this feature in MSDN.
I have tried using the following links..
http://msdn2.microsoft.com/en-us/library/ms143401(SQL.90).aspx
http://msdn2.microsoft.com/en-us/library/ms143684(SQL.90).aspx
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsse/html/sqlexpuserinst.asp
http://msdn2.microsoft.com/en-us/library/ms254504.aspx
http://msdn2.microsoft.com/en-us/library/ms165690(SQL.90).aspx
http://msdn2.microsoft.com/en-us/library/ms143446(SQL.90).aspx
any other links will be helpful for me in this regard.
Thanks,
Vaishu
Hi,
I've read the readme for the Service Pack 1 for Microsoft SQL Server 2005.
http://download.microsoft.com/download/b/d/1/bd1e0745-0e65-43a5-ac6a-f6173f58d80e/ReadmeSQL2005SP1.htm
But I'm not quite clear on what will happen if you currently have SQL Server Express 2005 installed with User Instances, and then you launch the installer for SP1.
Will it also update the User Instance? If so, how could I tell? When I go to the registry for the User Instance it has the older version value ie.
HKLMSOFTWAREMicrosoftMicrosoft SQL Server[instance name]MSSQLServerCurrentVersion = 9.00.1399.06
Shouldn't it be saying 9.00.2047.00?
Does this mean that I have to uninstall the User Instance before installing SP1?
Any help will be appreciated.
Thanks
Sam
Hi all,
This is my first C# (2.0) Windows based app accessing a local SQL Server database. Ive build a couple of web based apps using C#.
First I just copied a datbase access wrapper class from one of my web apps and used that. It works, but, the database shown in Server Explorer in VS2005 shows the table as empty. The table in /bin/ however, is updated as expected. Before I realised that there were seperate instances of the database i stripped everything down to a very simple example
[code]
string sConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True;User Instance=True";
SqlCommand foo = new SqlCommand("INSERT INTO tblTest (foo) VALUES ('atest')");
SqlConnection conn = new SqlConnection(sConnectionString);
conn.Open();
foo.Connection = conn;
foo.ExecuteNonQuery();
foo.Dispose();
conn.Close();
[/code]
This little tester windows based app has a simple tester drag and dropped grid view in it. When i run /pathToApp/bin/Debug/<AppName>.exe, independantly of VS, the grid view is full of the value "atest" as expected, but not when ran under visual studio. As I said above i found (at least i think this is right) there is a debug and user instance of the database. So im guessing I need two connection strings if i want to update both whilst dev'ing the application.
Ive had a look throuhg connectionstring.com and, to be honest, im confused... Any help for what the second connection string should be would be greatly apprecaited.
Thanks.
Can multiple users connect to SQL Server 2005 concurrently?
View 4 Replies View RelatedDoes anyone have links to various strategies for handling multi-user concurrency issues when updating data in SQL Server (2000 or 2005), either in the database (stored procedures) or via code.
I've seen a couple such as:
Check individual user updated columns to see if the database columns have changed and if not apply the updated columns (either individual updates or constructing a dynamic SQL statement).
Check all the fields for any change and if no change, update all the fields.
Check a version field for change and if no change, update all the fields.
What I haven't seen is complete solutions such as for the first one, ensuring the record is locked and can't be changed while checking for concurrency and ultimately updating the data. For the second one, how to raise an error if there was a problem, or for the third one how to ensure the record is locked between the version check and the update.
Even pieces of solutions are welcome (locking records, testing for change, etc). Just want to compare and contrast various methods as I create an infrastructure for 2005.
Thanks,
LarryC
Dear All,
i've altered my database to single user mode. and now trying to change to multi user mode with the query
alter database mydb set multi_user
but it is saying that it is in single user mode. query analyser closed.
how can i change that to multi user mode? idont know who opend that
to run sp_who it is not showing the database in dropdown list in enterprise manager.
thanks in advance
Vinod
Even you learn 1%, Learn it with 100% confidence.
I've taken over development of a Vs2003(vB)/MsSql2000 application which usually runs in on a Windows 2000 server with multiple workstations running the application simultaneously in Remote Desktop Sessions.
The central user interface element of the application is an un-databound grid (actually a farpoint spreadsheet) which displays sql table rows that are accessable from every workstation. The grid refreshes its content whenever a specific subroutine is called. That subroutine performs a query which loads its results into a collection which is then loaded into the grid. The subroutine is called during startup and at other times using the rather elaborate mechanism described below. Each workstation also has the ability to modify any row in the grid via a dialog-based editor. The grid itself is not setup to allow inplace editing.
The grid usually contains about 200 records and 20-50% of these records get modified (some repeatedly) every hour.
My question involves the classic multi-user issues of keeping all of the seperate workstation's grids current as individual workstations make modifications to the data.
What is Microsoft's recommended method for handling multi-user data-refresh requirements in custom applications written in VB.NET2003 with MsSQL2000?
Now that you know what I'm looking for, let me add a little more detail. The existing code handles this multi-user refresh issue in the following way...
A SQL Trigger is attached to the SQL Table's Insert/Modify and Delete events. That Trigger calls the xp_logevent built-in stored procedure to make an entry in the NT Event Log.
The application contains a subroutine to handle EventLog("Application").EntryWritten messages. That subroutine calls the subroutine (mentioned earlier) which refreshes the grid contents through a new SQL query.
In this way, whenever any workstation changes the table data, a trigger fires which makes a log entry and broadcasts an EntryWritten message into the global windows environment. The individual applications (each running in their own RDP session) hear the message and respond by refreshing their grid.
This all seems a little "rube goldberg" to me, but it has worked for many years.
That is, until we moved the SQL2000 server to a seperate machine to improve program responsiveness.
Now when the trigger is fired and the log entry is made, the EntryWritten message is broadcast into the windows environment of the dedicated SQL server where there are no applications listening for it. Meanwhile, the applications continue to run with unrefreshed data on the (now) dedicated RDP server from where the EntryWritten messages cannot be "heard".
So my question really comes down to this...
In an environment where the SQL server and the RDP server are two seperate machines, what is the best method for coordinating multi-user screen refreshes across seperate applications running in distinct RDP Client sessions?
Thanks in advance for any assistance.
Peace,
Colt Taylor
Computer Golf Sofware
I have developed two programs that operates against the same database. One of the program is just a display program that displayes the data put into the other administation program where you put in the data to be displayed (an administration program).
Every time I access the db from the administration program, the display program stops and throws connection pool errors and other database errors. For me, it looks like it does´t do multi-access to a database.
I have tried putting user instance to off in both programs, but this didn´t help.
Connection string also points to same file database.
Please help....
I have designed an application that uses sql server 2005 express database. This application was intended to be installed and used on a local desktop machine. However, now this application needs to be also installed on several computers and still needs to use only 1 database. Part of the database saves local user settings, so what I have done thus far is use two connection strings: one for local database (because the application may be used as origionally intended) and one for remote database that everyone should be able to connect to.
When I remotely connect to the database, it works fine. However, it seems to be locked so when I chose the same database for another user I get the error message "This File Is In Use." I need to know how to unlock it and make it usable for several users at the same time.
Thank you for your help! Please let me know if you need more information or if something is unclear in my description.
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
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
I am new to SQL Server but have been using Access to provide Multi-User acces to a central data store. We are evaluating the replacement of Access with SQL Server. With Access we don't need any special installation; I believe that the Jet Database Engine installed locally on each user's PC allows them to work with this in a disconnected manner; we use ADO.net 2.0 with VB.net 2005.
If each user has a locally installed SQL Server Express can they all attach to a database that resides on a shared network location?
In another post on the Forum I see the following regarding multi-user access:
Our application You will need to pick a central computer that everyone will be using the access the data and attach the file to the parent instance of SQL Express on that comuter, giving it a name that you can use to access it. Then you will need to modify your connection string to connect to the named database on the central server...
Can multiple locally installed SQL Server Express instances attach to a single data store that resides on a shared network location?
If not, what permissions do I need to create a parent instance of SQL Server Express?
Thank you for helping me understand how to implement our solution.
JudiR