Sql Server Express Loses Ability To Write To Database
Jun 17, 2006
After a period of use (typically 1-2 hours), an application using SQL Server Express stops writing to the database, whilst still continuing to read from it. As far as I can tell, no error message is generated by any operation. The application is written in VB Express and is executed on several machines, with SQL Server Express on a central machine. Re-starting the application on the affected machine restores normal operation.
The problem on one machine does not cause a similar problem elsewhere at the same time (hence it appears to be an issue with the relationship between the application and SQL Server)
This does not appear to relate to the response to Q asked by sgcook on 9 may as we are not using user instances, but only a bare minimum connection string.
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Apr 30, 2015
we have problems with our SQL Reporting Service 2012 (SSRS) server . We have setup Kerberos delegation between SSRS and the database server (SQL Server Always-on cluster) so users are authenticated down to the database. The issue occurs from time to time that SSRS loses the ability to delegate the user credentials to the database. At this point in time the Report Server logs contain rejected database connections because of ANONYMOUS logon. After restarting SSRS the problem is gone.
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Jun 13, 2006
Hello:
Can SQL Server Express open/read a .db database file that is Sybase?
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Jan 9, 2008
I have a lot of databases under SQL Server Express 2005, reading an writing datas with VB6 (yes Visual Basic 6) and ADO (Provider SQLOLEDB). I do NOT install the SP2, but yesterday I install Silverlight and now I have SP2 on my SQL Server (9.0.3042) !?
Now I have a strange problem: I can read all datas, but I can't write any data to any tables.
Here a simple example:
I have a table "Professions", one column "RecNo" as int identity (1,1) with primary key and a column "Profession" as nvarchar(30).
Reading like this works:
Dim rcs As New Recordset
sTmp = "select * from Professions order by Profession"
rcs.Open sTmp, gcn, adOpenForwardOnly, adLockReadOnly
If rcs.RecordCount > 0 Then
Do
...
rcs.MoveNext
Loop Until rcs.EOF
End If
rcs.Close
Writing like this doesn't work anymore:
Dim lNewRecNo as long
Dim rcs As New Recordset
sTmp = "select * from Professions where RecNo = 42"
rcs.Open sTmp, gcn, adOpenKeyset, adLockOptimistic
If rcs.RecordCount < 1 Then rcs.AddNew
rcs!Profession = "XYZ"
rcs.Update
lNewRecNo = CNull2Val(rcs!RecNo)
rcs.Close
The rcs-object still give me the new record number after rcs.update, but the record is not in the database table. Adding a record in the Management Studio gives an error "row failed on retrieve on last operation". If I then click the button "Execute SQL" the new record is shown.
Another behaviour: Adding a row in the IDE like described above locks the Management Studio. From where I recieve a time out error then click the button "Execute SQL".
Any ideas whats wrong ?
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Oct 9, 2006
I have an application that creates a new database during installation,and I've noticed some strange behavior. Once I've created thedatabase, I am able to immediately create tables and populate lookupdata, provided I remain connected to the server. If, however, Idisconnect and attempt to reconnect immediately, I'll get an errorsaying that my login is invalid for the new database.I can get around this by having my code simply wait 5 seconds beforeattempting to reconnect, but I'm curious to see if anybody here cangive an explaination for why this is happening. Here is a bit ofpseudo code to explain what I'm seeing:open new connectioncreate databasecreate tablespopulate tablesclose connection// open new connection /* can't do this yet, as it would break */for (int a=0; a<5; a++){Thread.Sleep(2000)try{open new connectionbreak;}catch{Debug("still waiting...");}}Running my version of this code, I'll see that "still waiting..."message go past 2-3 times before SQL Server wakes up and realizes thatI'm allowed to connect to it. Anybody know why?Thanks,Jason KesterExpat Software Consulting Serviceshttp://www.expatsoftware.com/---Get your own Travel Blog, with itinerary maps and photos!http://www.blogabond.com/
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Sep 30, 2006
Hi
When I deploy a database (mdf and ldf) and attch the database I get errors when my stored procedures attempt to call CLR stored procs.
Error regards database trust and assembly safety etc. This works on my development system/database so it's setup correclty there.
Clearly I'm missing some additional setup when attaching the database to another server instance. Can't figure it out though. I'm marking the assembly UNSAFE (it requires network access) and the database as trustworthy when attaching but the error persists. Also making sure the server instance has CLR enabled.
What am I missing? Any ideas?
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Nov 23, 2006
Hi all Im currently going through a ASP.NET book but i just cant get to use the SQL server express databases that come with the code examples in the book. All i can do is read the data but thats about it. I keep on getting the error below whenever i try to alter the data in the databases. I have tried enabling write permissions for the NETWORK SERVICE account for the App_Data folder but i still get the same issue. Im running the web apps with these databases in IIS v5.1 and using Visual web developer express. Im still an ASP.NET novice so please keep the solution to my problem as simple as humanly possible.Thanks in advance all.
Matt
Server Error in '/Chapter06' Application.--------------------------------------------------------------------------------Failed to update database "C:INETPUBWWWROOTCHAPTER06APP_DATAWROXUNITED.MDF" because the database is read-only. 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: Failed to update database "C:INETPUBWWWROOTCHAPTER06APP_DATAWROXUNITED.MDF" because the database is read-only.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): Failed to update database "C:INETPUBWWWROOTCHAPTER06APP_DATAWROXUNITED.MDF" because the database is read-only.] System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +857338 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734950 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +149 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +886 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +132 System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) +415 System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +135 System.Web.UI.WebControls.SqlDataSourceView.ExecuteDbCommand(DbCommand command, DataSourceOperation operation) +401 System.Web.UI.WebControls.SqlDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +721 System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +78 System.Web.UI.WebControls.DetailsView.HandleUpdate(String commandArg, Boolean causesValidation) +1152 System.Web.UI.WebControls.DetailsView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +461 System.Web.UI.WebControls.DetailsView.OnBubbleEvent(Object source, EventArgs e) +95 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35 System.Web.UI.WebControls.DetailsViewRow.OnBubbleEvent(Object source, EventArgs e) +109 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35 System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +115 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +163 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +174 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102 --------------------------------------------------------------------------------Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
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Feb 9, 2007
Hi there, i have sometimes trouble to write data to a table in a sql server expr. database.
i have a vb.net application that writes every 2 minutes data to a table. sometimes (no regulary phenomen) the error appears after some hours, sometimes after some days. then i cannot write data in the table. it seems that the database sleeps or is offline.
before i write the data i check if the connection is open and i can write data.
if i cannot write the data i try several times and often after the third try i can write the data.
i have checked everything (no power save's on or other power off modes)
i have also test it with SqlClient.SqlConnection.ClearAllPools()
and many other things to find the bug, but no success at the moment.
it seems that the database or the table is away ?? or sleeps for some seconds ?!? i have no idea.
could you help me ?
Greetings Andreas
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Feb 28, 2008
Hi i m using vwd2005 express and sql express.1. I want to write stored procedure in sql express using sql server management studio express. I m not sure where to write and how to execute the stored procedure in sql server management studio express. Can any one explain the steps required to achieve this? 2.And what is the difference between creating database using:- a. right click the project in solution explorer-> add new item->SQl database(creating .mdf file)and b.clicking a database explorer->data connection->Add connection .... thanks. jack.
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Dec 27, 2004
Good day all,
I am no longer able to manage SQL Server at the server explorer in Visual studio. i.e. create, modify and delete for Diagrams, Tables, Views, Stored Procs & Functions. Further more, it missing Diagram and function folder. I can only view or read data.
But I can access local MSDE as usual.
Whats I have done wrong? Please Help. Thanks.
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Sep 25, 2003
For no reason that I can see my SQL Server enterprise manager keeps losing all its SQL Server registrations. Enterprise Manager retains the top-level groups.
I am running enterprise manager on XP.
Help!
:confused:
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Dec 1, 2004
We have a view in a 9205 oracle database. We can query fine
and the decimal precision is there.
When we query this same view from ms sql server we lose the precision
so 115.25 becomes 115.
does anyone know a workaround for this?
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May 14, 2007
I use linked serve with (Security :be made with specific security conterxt) to connect to my production server from a Data Archive server.
Stored Procedures loop throught the prodcution data to insert records into Archive tables...Howerver after few hundreds of iteration I get the following error...
"Access to the remote server is denied because no login-mapping exists."
I am confused with the error message as it happens only after some successful insertions....
Any help is apprecaited...
Thanks
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Sep 9, 2004
Hi all. We have a mix of informix and mssql server and I want to know if something we do in informix has an analogous feature in MSSQL. We can define a "row type" in informix, like so:
create row type name_1(fname char(20),lname char(20));
The when we create any table that includes a first and last name, we do so using this row type like so:
create table sometable(name name_1, some column,...etc)
This allows us to set a standard for certain common fields and avoids having different developers build the same type of field in more than one way, different lengths, etc.
Is there a similar function in MSSQL server?
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Jul 30, 2015
I have a SQL 2014 SP1 set of servers with two asynchronous copies of an availability group. One of the asynchronous sites is down and SQL can no longer replicate the changes. I need to understand how long SQL Server can continue this way before the secondary replica will no longer be able to catch up. I assume this is really tied to the transaction log on the primary replica but would like it clarified.
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Sep 16, 2014
In one of my environments, I need to grant the ability to view all the logins and agent jobs to an account, but I don't want to give him "sysadmin" or "securityadmin".
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May 16, 2007
Here's a weird one:
We are setting up a job for the SQL Server Agent via SSMS. The Job Step Type is SSIS.
In the Job Step Properties window, on the Set values tab, you can enter Values to override your package variables - normally all well and good.
However in this particular case, the variable Value contains semicolons ( - it is a Connection String for an ODBC driver. Eg: Driver={Client Access ODBC Driver (32-bit)};system=MYSERVER;...
The behaviour for this Value is weird:
If the Value is not surrounded with double quotes ("), the job fails with "The command line parameters are invalid."
If the Value is surrounded with double quotes ("), the job will run as intended. The catch is: that entry and any subsequent "Set Values" entries disappear next time the Job Step Properties window is opened.
This looks like a bug with the parsing of those strings by the Job Step Properties window?
Or am I missing something?
Mike
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Apr 25, 2008
Hello All,
My boss told me that we can write migration scripts to database using Sql server management studio. can someone guide me or point to a website which explains in detail how to do this please. i want to learn this. or even a tutorial also would be great. i am interested in writing or executing scripts by using sql server management studio( in sql server 2005). i think its called sql enterprise manager in sql server 2000.
Thanks a lot.
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Oct 6, 2015
How do I determine the read/write frequency on a database table? I am trying to do this on a 2012 and 2008 R2 servers.
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Apr 16, 2007
When I downloaded/started using Visual Web Developer I was under the impression that I needed to install SQL Server Management Studio Express in order to create/manage databases, and to provide the engine to access the data.
Since then I have found tutorials and have successfully created/used databases solely from within Visual Web Developer. I'm assuming that Visual Web Developer includes a database engine, much like the webserver that is included. (This is an awesome thing).
When I tried to upload my web application with database to my production server, the database would not work, it started working after I installed SQL Server Management Studio Express on the server.
Is it my understanding that you need SQL Server Management Studio Express if you do not have Visual Web Developer Express installed in order to provide the data access engine?
Also, I am unable to "attach" my Visual Web Developer Express created database to SQL Server Management Studio Express. Are there any posts that provide more information about this topic?
The only reason I'm asking is that I have extra whitespace on the end of my text fields, and I thought ANSI_PADDING was turned on. I do not see the option in Visual Web Developer Express, but have found it in SQL Server Management Studio Express.
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Feb 18, 2008
Hi,
I am a newbie so i apologies beforehand for any mistakes i make on this forum.
Anyway, i created an asp.net website using the MS Visual Web developer tool. This has a couple of SQL SERVER databases within it.
I then latervinstalled the SQL SERVER management studio express in order to manage the SQL SERVER DBs that i had as part of my website but they do not appear within the management studio db list.
As this is the express version, is there anyway of importing the existing SQL SERVER dbs that i have to the management studio so i can manage them from there?
Regards,
Shuja.
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Jul 10, 2007
Okay, I've read massive topics on ClickOnce, and embedded database applications, etc, etc.
I need a handful of good suggestions how I can create a deployment package, to get my sql express database onto a SQL Express server.
The database will need to be multi-user, because I am also developing a WinForms application to connect to the SQL Express database.
I'm thinking I need to use some automated scripting features, to generate scripts for the database once I am done (unless you have a better suggestion).
After that, I need to know what to do with those scripts, and how can I create a setup / deployment packages to run those scripts against a SQL Express server.
The other alterntative obviously is to copy my sql express database, and run an attach command. This will work the first time, only because this will have been the first deployment of this database.
Please keep in mind when answering this question, that I will not be embedding the database, and as far as I understand ClickOnce is a feature for use with embedded databases or user instance databases (not sure).
Daniel Crane
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Apr 30, 2006
Hi, I'm completely new to SQL Server and ASP.NET, so please bear with me on my learning curve! I've installed Visual Web Developer Express and SQL Server Express (on the same PC). I then used Web Developer Express to successfully create a new database with a couple of tables in it. So far so good. I then installed SQL Server Management Studio Express on the same PC and tried to connect to my new database. The connection to the SQL Server instance appears to work OK (using Windows Authentication) but I can't see the database I previously created. All I can see are the System Databases. Does anyone know what the solution might be?
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Dec 3, 2007
Hi all,
In the last one and half years, I used the Northwind Database in SQL Server Management Studio Express (SSMSE) to learn the programming of SqlConnections, Data sources, Database Exploere, ADO.NET 2.0, etc. via VB 2005 Express.
The Northwind Database in my SSMSE got lost very often, but I was not aware of it. How can I know where the Northwind Database is used or processed by my VB 2005 Express projects that were the examples of some tutorial books or my trial projects? How can I release the Northwind Database back to my SSMSE from the VB 2005 Express projects? Please help and advise.
Thanks in advance,
Scott Chang
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Jun 24, 2007
I am new to this type of programming and and have read all articles on adding an image to the database and it seems they all use sql queries to add an image but I want to add an image at design time. I am using Visual Basic 2005. I am also using Visual Basic 2005 Express Edition to try the same thing. I am trying to build a Translator program for english to Brazilian Portuguese and the reason I want to add the images is so that when I translate the word cat from english to Portuguese, I can also show an image of a cat. Can anyone please help me
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Jan 6, 2007
Hi all,
I have read/studied (i) Working with Databases in Visual Web Developer 2005 Express in http://quickstarts.asp.net/QuickStartv20/aspnet/doc/data/vwd.aspx, (ii) Xcopy Deployment (SQL Server Express) in http://msdn2.microsoft.com/en-us/library/ms165716.aspx, (iii) User Instances for Non-Administrators in http://msdn2.microsoft.com/en-us/library/ms143684.aspx, and (iv) Embedding SQL Server Server Express in Applications in http://msdn2.microsoft.com/en-us/library/ms165660.aspx. I do not understand the concepts and procedures to do Xcopy and User Instances for non-administrators completely-I do not know how to connect to databases and create database diagrams or schemas using the Database Explorer. I have a stand-alone Windows XP Pro PC. I have created a ChemDatabase with 3 dbo tables in the SQL Server Management Studio of my SQL Server Express and a website of my VWD Express application with an App_Data folder. I am not able to proceed to use Xcopy and user instance to bring the 3 dbo tables of ChemDatabase to my App_Data folder. Please help and give me some detailed procedures/instructions to bring the 3 dbo tables of ChemDatabase (or ChemDatabase itself) from the SQL Server Management Studio Express to the App_Data folder of the website of my VWD Express project?
Thanks in advance,
Scott Chang
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Sep 13, 2001
Hello,
My problem is this. I did a dts of my old access database to a new sql 7
db. I used Access 97 as the frontened and connected the two databases using linked tables. I made sure all the indexes and such were correct in the SQL database before linking + made sure all the security was corret. When I open a table in the access frontend that is linked to the sql backend, I cannot update or change any data even though I am part of the NT administration group which is given full permissions to the database. Any reason why?
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Jan 11, 2006
I recently added a new user to my database. Now I want to delete that user, but I keep getting the error above. What do I need to do to delete my recently added user?
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Jan 12, 2012
i attached adventure works in sql server 2008 and it showing as read only ,make it read write or remove read only tag from database.
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Sep 13, 2001
Hello,
My problem is this. I did a dts of my old access database to a new sql 7
db. I used Access 97 as the frontened and connected the two databases using linked tables. I made sure all the indexes and such were correct in the SQL database before linking + made sure all the security was corret. When I open a table in the access frontend that is linked to the sql backend, I cannot update or change any data even though I am part of the NT administration group which is given full permissions to the database. Any reason why?
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Oct 23, 2007
Is it normal that my scd loses its mappings if I change one of its inputs?
When I talk about mappings, I talk about the first page of the scd wizard. I set everything (all the columns, business keys) and run the wizard until the last step. SCD creates two outputs (Changed and New Rows). All Ok.
If a column I use as input in the scd changes (for example, it is not a conversion column any more but a derived with the same name), my scd loses all the mappings!
It is very annoying since I have to map all of the columns again. Is this a normal behaviour of the scd or I' doing something wrong? Is there a way to 'repair' my mappings without needing to set one column at the time every time?
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Jan 23, 2008
Hi,
What are the steps required to migrate or upgrade data or database from a sql server 2005 express database to main sql server 2005 database?
Regards,Sandy
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Dec 11, 2006
Hi,
I'm trying to learn some VB programming with the VB 2005 Express Absolute Beginner Series video tutorials (which I think is great) and have come across a problem that I can't solve.
When I follow the instructions in Lesson 9 (Databinding Data to User Interface Controls) my application will display the data from the database correctly and I can edit it (and as long as the debugger is running the data remains changed). However, the changes won't propagate back to the database. I don't get any error messages but after I edit the data, save (with the save button on the BindingNavigator toolbar), and end debugging the data in my database remains unchanged. When I use a MessageBox to show how many rows where edited/updated in the
Me.myTableTableAdapter.Update(Me.myDatabaseDataSet.myTable)
I get the correct number back. I'm sure the problem is not due to coding errors since I've also tried running the accompanying Lesson 9 project file that can be downloaded from MSDN and the problem persists.
I'm using Windows XP SP2, SQL Server 2005 Express Edition and VB 2005 Express Edition. I've tried installing SQL Server 2005 Express with a number of different settings, including default settings, but it doesn't make any difference.
Would greatly appreciate any feedback on this as I'm keen to resolve this problem so I can get on with the next tutorial lesson.
Thanks,
Ieyasu
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