.NET Application Crashes On Opening SQL Compact Edition 3.5 Connection
Apr 15, 2008
Hi,
I'm writing an application with Visual Studio 2005 (Visual Basic .NET 2.0) which uses a SQL Compact Edition 3.5 database. On my HTC Touch with Windows Mobile 6.1 installed the application crashes, without any error message, if I try to open a connection. But...On the Windows Mobile 6 Pro emulator the connection opens normaly. The whole application runs perfect.
On both "devices" are the same dll's, of version 3.5.0.0.
I'm using the following code to open the connection:
Dim localConnection As New SqlCeConnection(mySQLce_strConnection)
localConnection.Open()
I tried so many things but without any success. But...I'm able to open the database (MControl_SQLce.sdf) with the Query Analyzer 3.5 on the Mobile. No problem.
This is my configuration:
Dev PC:
Windows XP SP2
Visual Studio 2005 Pro
.NET Framework 2.0 SP1
.NET Compact Framework 2.0
SQL Server Compact Edition 3.5 (this version I reference to in my VS project)
Mobile Device (HTC Touch):
Windows Mobile 6.1
SQL Server Compact Edition 3.5
I'll try and ask one more time. Does anyone have a clue how to fix this?
"A SQL Server Compact Edition DLL could not be loaded. Reinstall SQL Server Compact Edition. [ DLL Name = sqlceca30.dll ]"
or
"SQL Server Compact Edition encountered problems when opening the database" "Internal error: The database is not initialized."
I've been fighting this for well over a week now. My XP based version works fine but this error occurs routinely on my CE4.2 device. I cannot find anything meaningful using Google other than 'look for non disposed' replication objects which I've done. Is this bad hardware? I don't believe I'm out of memory as the app is about 1.2MB including about 8 DLL's and GC indicates I have about 300KB of objects at the time of the failure. I also use a bunch of static (global) objects that I use throughout the code.
It would be nice if I could get the lower level error messages causing these failures but that is probably too much to ask.
The odd thing is that it's only the replication engine that fails as even after the failure, the app can reopen the DB and work with the data just fine.
My basic order of the application is...
1 Open DB SqlCEConnection 2 Create/Prepare any SqlCECommand objects 3 Do work here 4 Dispose any SqlCECommand objects 5 Close DB 6 Dispose SqlCEConnection object 7 Create SqlCEReplication object 8 BeginSynchronize 9 ... error here.. 10 Dispose SqlCEReplication object 11 Reopen DB SqlCEConnection
I've tried creating the Replication object at program start and that does not help. I'm guessing there is something about .net that I don't understand either with stack space, # dll's or whatever. I've rearranged the order of the Dispose, Create, SQL CE objects to include just about every permutation but still am hitting this same problem.
Are there any tools that can help me profile this app for memory problems or usage? Everything seems geared for .Net and not .NetCF.
I completed that example that I pasted in the subject part and when I try to synchronize my mobile database, the data from the server appear in my pocket pc; but when i refresh the data on my pocket pc they do not show on the server.
I have a package with numerous data flows in it. (I know - this is not recommended as a best practice.) Anyway, one of the Data Flows just started giving me some trouble. When I opened that particular Data Flow, then BIDS would crash. I tried loading the project again, and opening that Data Flow task, and it just kept crashing. I rebooted - same deal.
The Data Flow was itself very simple. There was an OLE DB Source, and OLE DB Destination, a conditional split, a derived column, a data conversion and a Lookup. Pretty routine stuff. Out of the blue really, and long after I created it - it just starting crashing BIDS when I opened it.
My solution was to copy the Data Flow control flow component and paste it back into the same package. This worked perfectly fine, and didn't see any issues after. So, apparently something in the meta data became corrupt, and caused it to crash.
Anyway, just curious if others have seen this behavior, but also wanted to post this as a solution in case someone else has the same problem.
we've got a SQL Server 2005 which replicates with an SQL Server Compact 3.5. Every 10 to 20 synchronisations we're getting the error mentioned above. A Soft reset of the device helps to make the synchronization working again.
Why is this error happening and how can we resolve this?
BTW, we've also running system that replicates with an SQL Server Compact 3.0 without having this problems.
everything is ok for first run. but i leave the program relogin than that error occured ppc2003 second edition devices. Windows mobile 5.0 device works fine. can anybody help me?
VS2005 ver 8.0.50727 SSCE31VSTools-ENU.exe loaded SSCE31SDK-ENU.msi loaded
machine 1 SQL 2005 loaded
machine 2 http://192.168.20.22/ssce/sqlcesa30.dll "Microsoft SQL Server Compact Edition Server Agent" looks fine
pocket pc side C:Program FilesMicrosoft SQL Server Compact Editionv3.1SDKinwce400armv4
End Try ------------------------------------------------------------------------------ i added the following code to very beginning of my code too. that code lock my device
Declare Function LoadLibrary Lib "coredll" Alias "LoadLibrary" (ByVal lpLibFileName As String) As IntPtr
Hello, How are you? I have a problem when I try to create a new connection with Microsoft SQL Server 2005 Compact Edition from Visual Studio 2005 IDE. When I€™m going to choose the data source, the SQL Server 2005 Compact Edition provider doesn€™t appear in the list. I installed the SQL Server 2005 Compact Edition from this page http://www.microsoft.com/downloads/details.aspx?FamilyId=%2085E0C3CE-3FA1-453A-8CE9-AF6CA20946C3&displaylang=en. In the additional information says by installing SQLServerCE31-EN.msi installs the provider (System.Data.SqlServerCe.dll) in the GAC (global assembly cache) and registers the OLEDB provider (sqlceoledb30.dll). So, I don€™t understand why couldn€™t I create a new connection with Microsoft SQL Server 2005 Compact Edition from Visual Studio 2005 IDE?
Will the database get locked if my ASP.Net application that is calling a stored procedure in which a HOLDLOCK for table1 is issued to SQL Server, suddenly crashes just after the stored procedure is called?
I am attempting to use the SQL Server 2008 Developer Edition (Management Studio) to create/manage a Compact Edition 3.5 database. My problem is that I cannot even create/open the compact database in Management Studio. Any help would be GREATLY appreciated. TIA
Problem Creating the Compact Database:
Open 2008 Management Studio
From menu choose File | Connect Object Explorer...
Choose SQL Server Compact Edition as the Server type.
Choose <New Database...> as the Database file.
Browse to folder where file will be created (C:MyDatabase#1.sdf was used in my example)
Leave all other field as default selections OR make changes, either way it does not work.
Click OK.
At this point the OK button just becomes disabled and nothing happens. Problem Opening An Existing Compact Database:
Open 2008 Management Studio
From menu choose File | Connect Object Explorer...
Choose SQL Server Compact Edition as the Server type.
Choose <Browse for more...> as the Database file and locate a ".sdf" file that I created using VS2008.
Enter password, if any.
Click OK.
The following exception is displayed: TITLE: Connect to Server ------------------------------ Cannot connect to C:Documents and SettingsdarrinbMy DocumentsVisual Studio 2008ProjectsTestSQLCompactEdition35TestSQLCompactEdition35AFS.sdf. ------------------------------
ADDITIONAL INFORMATION: Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&LinkId=20476
------------------------------ Could not load file or assembly 'Microsoft.SqlServerCe.Enumerator, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) (mscorlib) ------------------------------ BUTTONS: OK ------------------------------
I have an application that manage an sql srever compact edition database it worked OK until I got the following problem: Only when debuging the application ("Start Debugging" from visual studio). In the first call to an sql server routine I get an exception "Unspecified error [ sqlceqp30.dll ]"
I use Microsof Visual Studio 2005 to write a c# aplication for my compact device (Dell Axim). I also use Sql Server Compact Edition to handle my database. Everything worked OK but suddenly I get an exception on the first call to fill command of a table in my database (Any table) This exception is happenning only when I debug the application if i run the application without debug everything is workink OK. The exception details are :
System.Data.SqlServerCe.SqlCeException was unhandled Message="Unspecified error [ sqlceqp30.dll ]" HResult=-2147467259 NativeError=25123 Source="SQL Server Compact Edition ADO.NET Data Provider" StackTrace: at System.Data.SqlServerCe.SqlCeConnection.ProcessResults() at System.Data.SqlServerCe.SqlCeConnection.Open() at System.Data.SqlServerCe.SqlCeConnection.Open() at System.Data.Common.DbDataAdapter.QuietOpen() at System.Data.Common.DbDataAdapter.FillInternal() at System.Data.Common.DbDataAdapter.Fill() at System.Data.Common.DbDataAdapter.Fill() at Ness300.NessDBDataSetTableAdapters.UsersTableAdapter.Fill() at Ness300.LoginPanel.DoLogin() at Ness300.LoginPanel.OKButton_Click() at NL300Controls.BmpButton.L300Button_MouseUp() at System.Windows.Forms.Control.OnMouseUp() at System.Windows.Forms.Control.WnProc() at System.Windows.Forms.ContainerControl.WnProc() at System.Windows.Forms.Control._InternalWnProc() at Microsoft.AGL.Forms.EVL.EnterMainLoop() at System.Windows.Forms.Application.Run() at Ness300.Program.Main()
I tried to run the application from the mobile device in order to connect to it doing "Attch to running process" from visual studio. But just running the application on the device with the resgistry value: HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NETCompactFrameworkManaged DebuggerAttachEnabled set to 1 caused the crash when I set it back to 0 everything works fine. It worked for me before I do not know what happened. Is it a security problem ?
Can any one helpi me with this because this problem do not give me a way to debug my application.
I have a sql server ce db file that I use in my pocket pc application. It seems to be working until I try to edit my .sdf file in SQL Server (2005) Managment Studio. After this I cannot open modified file in my application.
I receive native exception error when I call Open method for Connection object: ExceptionCode: 0xc0000005 ExceptionAddress: 0x03f8aaac Reading: 0x00000010
When I edit .sdf file in another pc it's all working.
My config is: windows vista business .net compact framework 2.0 sp2 sql server 2005 sql server 2005 compact edition sql server 2005 compact edition server tools sql server 2005 compact edition tools for visual studio 2005
Hello, there are some limitations in SQL Server 2005 Mobile Edition - e.g. there is no TRUNCATE TABLE statement, the UPDATE .. FROM clause is not allowed etc. Are these limitations in Compact Edition too? Is T-SQL in these editions functionally equal or different? Is there any comparison of T-SQL features in both editions?
I'm currently looking at adding a database to my company's WinCE 4.2 -based device, running applications coded with embedded CE 4.0. We want to start tracking potentially large quantities of user data (10K-30K 500 byte records) and are looking at a database engine to support this. The database would reside on the device although we would potentially dump the data from the devices to a central workstation that would be used to pull reports about the data across multiple devices. SQL Server Compact Edition sounds like a possible solution, but I'm unclear if it's supported on CE 4.2 or how to install it if it is. It's clearly supported on CE 5.0, but it may be a while before we upgrade to CE 5.0 or 6.0. I've seen references that say that SQL Server Compact Edition is the same as SQL Server Mobile Edition, and references that Mobile Edition is supported on CE 4.2, but I'm unclear if I can install and use SQL Server Compact Edition on CE 4.2 or if I'm on a wild goose chase. If not, can I use SQL Server Mobile Edition and migrate to SQL Server Compact Edition when we upgrade CE to 5.0 or 6.0? If not Mobile Edition, what about Microsoft SQL Server CE 2.0? Is that going too far back in the archives? Thanks for any guidance/enlightenment you can offer.
I am trying to make a simple example like sql management studio but stuck in the get table names part :) in first step. are there any easy way to get just table names from sdf file ?
I create a small aplication to lookup postal codes, it uses only some basic queries. It's a Winforms (using Visual Studio 2008) application, as MS put as local datase SQL Server Compact 3.5, I use it.
The application works fine it has only tree tables (with the postal codes of USA, Canada and Mexico) using the SQL Server Compact 3.5 database file.
I create a setup project and made and installer, in this case I follow the indications from MS to copy to the application folder alld the SQL Server dll files needed.
In Windows XP, the aplication works fine after installation. But in Windows Vista not. I found that as the installer put all files unde C:Programa filesMy CompanyPostal Codes folder, the application need's administrator permission to run.
I don't know how to change the database file to another location in order to avoid this problem.
Do you know how to avoid this? Maybe using a different path for my database file (if this can you tell me how to make the connection string to works properly) Or making the app to requires the administrator permission (I know tha in VS 2008 this can be done, biy not idea of how?
I am writing an application that is designed for the desktop, or small group (3 or less) desktops. The application is being deployed using the Cassini web server as a complete "embedded" solution. I wanted to use SQL Server Compact because of its small footprint and because of the synchronization capabilities with SQLServer. Also, it is very easy to deploy vs. SQL Server Express. The idea behind this APP is that someone might use it locally and then decide to subscribe to the service and then connect the same application to a web services application. That being said, and with knowledge of Microsoft's stance on SQL Compact under ASP.NET, I have most everything working and it works great except for one thing. When I add a SQLDataSource to the page and set the connection string to my file and the DataProvider to System.Data.SqlServerCe and then bind a data grid to the SQLDataSource, it runs fine on my development machine, but when I deploy to my clean test machine, I get an error when the page loads saying: Unable to find the requested .Net Framework Data Provider. It may not be installed. I can create a dataset in code (in fact,in several other places I do) and it works fine. It is just the SQLDataSource(s) that are throwing this error. I have a copy of System.Data.SqlServerCe.dll in the bin folder and I have all of the compact DLL's in the bin folder as well. I can't figure out what I need to do. I also have a reference to the System.Data.SqlServerCe in the web.config file. Can anyone help?
I am using SQL Server Compact Edition under ASP.NET. I am aware of the limitations and warnings from Microsoft for SSCE under ASP.NET, but this app is designed as a desktop deployed ASP.NET application running under the Cassini web browser. I wanted to use SQL Server Compact because of the RDA capabilities with SQL Server without the overhead of installing SQL Server Express. There would be 1-3 users at most running the application. SSCE seemed to make the most sense.
That being said, I have everything working fine except for this. I have added several SQLDataSource controls to several web forms and then I have GridViews bound to these controls. I like using the controls because of the built in sorting, grouping and updating I can do. When I run this on my development machine, it runs fine. When I move to one of my clean test machines and install the app, the SQLDataSouce controls throw the following error:
Unable to find the requested .Net Framework Data Provider. It may not be installed
I have the System.Data.SqlServerCe.dll in the bin folder along with all of the files from the the SQLServer Compact 3.1 install, a reference to it in the web.config file etc. In fact, I have several other database related datasets and tableadapters that are created throughout the application and they all work fine and can access and display data from my sdf file. It seems to only be with the SQLDataSource controls.
I'm trying to start an application in C# with visual Studio 2008 and I want to connect it to a SQL CE 3.5 Database (local .sdf file). I only found samples or How-to guides that use the wizard to add the datasource and the way dragging the dataset to the form. All things binded to the database where you don't have to do coding.
I don't want to have the binding navigator bar, I just want to use text box, date picker and buttons and Save that to the database myself. That way I think it will be more easy for me to validate or manipulate data before the insertion in the DB.
Some time ago a make an ASP.net that was doing same kind of thing with an Access DB... Hope this can help to show what i really want... (sorry for my bad english....)
Nick
Code Snippet Private Sub btnAskSql_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAskSql.Click lblMsg.Text = "" Dim MyDS As New DataSet
'txtRequest.Text is a SQL command like Select * from..... MyDS = SQLRequest(txtRequest.Text) Try DG01.DataSource = MyDS.Tables(0).DefaultView DG01.DataKeyField = "ID" DG01.DataBind() Catch ex As Exception lblMsg.Text = Err.Description Finally End Try End Sub
Function SQLRequest(ByVal TheRequest As String) As DataSet Dim _Con As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=" & Server.MapPath("Gifts.mdb") & ";") Dim selectCMD As OleDbCommand = New OleDbCommand(TheRequest, _Con) selectCMD.CommandTimeout = 30 Dim custDA As OleDbDataAdapter = New OleDbDataAdapter custDA.SelectCommand = selectCMD
Dim TheDS1 As New DataSet Try custDA.Fill(TheDS1, "Request") Catch ex As Exception 'oups lblMsg.Text = Err.Description Finally _Con.Close() End Try Return TheDS1 End Function
We are developing a desktop windows forms app that uses tha database as storage for application configuration. It may be used by one user locally OR used locally by multiple but sharing the database.
Now, i'm really sure that I have read that sharing the .sdf file over a network is supported and thus have started developing against the 3.5 compact db (sdf file). But when testing this scenario we get a message that sharing over network is not supported. I'm really surprised and frankly puzzled since I know I have read about this being supported.
So, can someone more into this subject exlpain to this to me? Is it supported, and if not, should we use the express version instead?
Also, if we have to change strategy, is there an easy migration path regarding development (app. is not even in beta stage so no migrations will be necessary with customers.).
Thankful for any help since this might cause a lot of extra work...
If this leads down the synchronization path, could someone please explain how this is set up. Is it one "master" that acts as a publisher? If we would like to have the solution where several users access the same db-file (be it sdf or mdf), do we have any choice here?
i had read information about sce and i had not unsderstood a little thing:
is it possible or not to use a dataset with that version of sql server? i have a class that access the database with some functions and one of then return a dataset. the dataset is not to be used because it does not make sense with sql server compact edition or it cannot by use at all cause sql server compact edition does not support it?
thkx and by the way i think that it's a great product!
Dear all, Anybody knows where to download the beta release of SQL Compact Edition 3.5. Please provide the URL to download this 3.5 of SQL CE. Thanks Gops Sofist India gopalan@sofist.com
Does the new SQL server Compact edition RC1 (release in Dec 2006) replace the Microsoft SQL Server 2005 Mobile Edition Device SDK?
OR is this an additional database for specific requirements.
Currently developing against MS SQL Server 2005 Mobile Edition Device SDK;; if I switch to the Compact edition; is there a migration wiarzrd or Upgrade wizard available?
We currently use SQL Mobile and SQL Server 2005. We depend heavily on merge replication for data to the field handheld devices.
We are going to be starting some new projects and I was wondering about moving to SQL Compact Edition as the first step to migrating all of our applications.
I am concerned, however, about the server side and replication. If we simply deploy SQL Compact Edition will there need to be any changes to the server for replication?
I have a Symbol MK1200 device (Intel XScale processor) running CE.NET 4.2 and when I try to reference any SQL objects I get the error:
Can't find PInvoke DLL 'sqlceme30.dll'
The documentation says that Compact Edition is supported on CE.NET 4.2, (ms-help://MS.SSCE.v31.EN/ssmmain3/html/ee220634-55c9-4123-85c4-4e6ceb07f942.htm) but I came across a hotfix (http://support.microsoft.com/kb/924811/) which contradicts this and says CE.NET 4.2 is not supported by default.
Can someone clarify this for me? I know that VS.NET 2005 doesn't support debugging of CF 2.0 apps to CE.NET 4.2 devices but I thought I could manully deploy a CF 2.0 SP1 application with SQL Compact Edition (although I'm still not sure whether I need the hotfix) ?
Either way I've been playing around and here is what I found ...
1. I installed CF 2.0 SP1 and verified a simple 'Hello World' application could deploy. All worked ok. 2. I downloaded & installed the SQL Compact Edition CABs on the device manually from 'SmartDevicesSDKSQL ServerMobilev3.0wce400armv4'. I opened Query Analyzer on the device and it worked i.e. I could open a database, run query, etc. 3. I modified my application with the following sample code:
Once again, just deploying (not debugging) the app. and got the error above 'Can't find PInvoke DLL 'sqlceme30.dll'
4. I installled the HotFix from http://support.microsoft.com/kb/924811/, now Query Anaylzer did not work even though it did work pre-hotfix install, and I'm still getting the same error when I test my code.
Can anyone shed any light on this? It's driving me up the wall ;o)
I have not seen much info on this so I thought I would ask the forum. I have VS2005, no SP1 and SQL Mobile installed on my computer. I started developing an app for Windows Mobile 5 using RDA and it appears to work fine. Now I want to know what happens to SQL Mobile if I install SQL CE. Is it going to affect my app? Do I have to install the SQL CE merge replications tools for IIS again? I already have them for SQL Mobile? Will this affect the operation of my app? It looks like the installation procedures call for installing SQL CE tools to VS2005 before installing VS2005 SP1 then install VS2005 SP1 and finally install SQL CE tools for VS2005 SP1. Any help, thoughts or experiences involving this would be appreciated.
