Sqlce 3.0 Vs Sqlce 2.0 Memory Issue
Feb 6, 2006
I am currently upgrading our ppc app (written in .net 2003) to .net 2005 and from sqlce 2.0 to 3.0. The new application runs out memory(storage) when handling lots of data transactions (both in case of using sqlcedatareader, and dataset ). There is no memory leak issue here, sqlce 3.0 simply uses a lot more (3 times more) memory than sqlce 2.0.
Our applicaton runs fine using sqlce 2.0 and .net 2003, but fail due to memory shortage
with the upgrades(which has the same code). Anyone can shed some lights on this issue?
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Oct 3, 2006
Hi all, I am querying an SqlCe Database on my PDA and noticed that the device is slowly running out of memory every time I execute a query. I am using the following code:
public SqlCeDataReader ExecuteReader(string command, params SqlCeParameter[] commandParameters)
{
SqlCeDataReader reader = null;
SqlCeCommand c = new SqlCeCommand(command, cn);
try
{
for (int i = 0; i < commandParameters.Length; i++)
c.Parameters.Add(commandParameters);
reader = c.ExecuteReader();
}
catch
{
// Release resources
c.Parameters.Clear();
reader.Close();
throw;
}
c.Parameters.Clear();
return reader;
}
This method is a part of my 'SqlCeHelper' class that I have written.
I noticed that when I reach the line reader = c.ExecuteReader() , the memory of my device decreases by about 1%. The reader is returned to a class which makes use of it and then disposes of it by calling reader.Close(); The connection to the database is also closed properly at some point, but memory never gets released. Memory gets only released when the application terminates.
I am wondering if I am doing something wrong by not disposing of some resources. Please help!
(Also tried GC.Collect() , didn't help!)
Cheers.
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Jun 9, 2006
Does anyone have any instructions on how to go about uprading a .sdf file
from sqlce 2.0 to sqlce 3.0?
I found this on an msdn website
(link: http://www.microsoft.com/sql/editions/sqlmobile/upgrading.mspx) but
as you can see its very lacking on detail. (I included the link and content
referring to upgrading the database files so you won't have to go to the link
to see the part referring to upgrading the database.) I tried to run the upgrade.exe on my device but it doesn't explain how you're supposed to point it to the .sdf that you are trying to update. Here is the content on the above web page.
Upgrading Database Files
You can upgrade a database created with an earlier version of SQL Server CE
2.0 to a database created with SQL Server Mobile by using the SQL Server
Mobile Database Upgrade tool (upgrade.exe). The Database Upgrade tool runs on
a smart device.
When you run the SQL Server Mobile Database Upgrade tool, the new SQL Server
Mobile database is created on the smart device. The new database, with the
file name extension .sdf, contains all the data that was in the source
database. You need to reinitialize the upgraded database to continue using it
for replication.
Note: If you are using replication or remote data access (RDA) as a
connectivity solution before upgrading to SQL Server Mobile, you must
synchronize the source SQL Server CE database (subscription database) with
the SQL Server database (Publisher). The reason for synchronizing before
upgrading to SQL Server Mobile is to ensure that any changes that exist in
the tables on the SQL Server CE database are updated on the SQL Server
database, because after the upgrade you must resubscribe or repull using the
new database.
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Oct 11, 2006
I presently run on my server SQL SERVER CE 2.0 and want to install, in addition on SQL Server 2.0, SQL Server Mobile 2005.
Is there a procedure to have both installed and running on a computer?
Thanks!
Marco
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May 16, 2007
It is possible to upgrade existing SqlCE to Sql 2k5 database? Or just import CE database to import data model structure and data?
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Dec 12, 2007
My app is working on my local system with the vs2008 development server. It's an asp.net app and I added the line:
AppDomain.CurrentDomain.SetData("SQLServerCompactEditionUnderWebHosting", true);
So it works fine on my system. But I can't get it to work on shared hosting. I have uploaded all the sqlce 3.5 dlls to the bin directory. I am stuck at the error:
Access to the database file is not allowed. [ File name = ]
There actually is a file name in the connection string, and I set the permissions wide open on App_Data to test this.
What are the .net framework requirements for sqlce 3.5? I can't find this info anywhere.
I know sqlce 3.5 is not recommended for asp.net, but it is not the main site database but is used for a setup database utility to be installed for a windows app.
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Jan 31, 2008
Hi,
We have over 1000 terminals running CE 4.2 on an x86 cpu currently using SQLCE 3.1.
We have just upgraded to VS 2008 and found the projects have been upgraded to reference SQL CE 3.5 - this is great, as we wish to use things like TOP etc.
However, all the distributable packages only include CAB files for CE 4.2 for the ARM Processor, or CE 5.0 for the x86. Is there a CAB package available for CE 4.2 for the x86 CPU? (please...)
Even just the relevant .DLL files would be fine as we repackage them ourselves anyway.
Thanks.
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Mar 21, 2007
Hi,
Could some one in copying data from Oracle to MS SQLCe, I have the entire table structure on SQLCe.
I want to do it progamatically, if there is tool which will do this activity I am also fine with that.
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Apr 2, 2007
Hi i developed Wm5 PPC application with sqlce database. i Create Cab file when i install in my HP WM5 PPC that will showe the Message sqlcewm.dll missed. Please tell me 1)sqlce30.ppc.wce5.armv4i 2)sqlce30.wce5.armv4i 3)sqlce20.ppc.wce5.armv4i..Please Help me
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Oct 23, 2007
In my homegrown data layer, I added the ability to do Order By Clauses.
I do one query with an Order By clause (all 6 records in the table retrieved).
Then I do a 2nd query without an Order By (36 of around 200 records in the table retrieved)
And I'm getting Native Exceptions.
ExceptionCode: 0xc00000000c (Null Pointer I believe)
ExceptionAddresss: 0x00c3703c (looks to be in sqlcese30.dll)
Reading: 0x00000005
I ran thru with the debugger, and am finding the error happening inside of a SQLDataReader.Read() call. It's trying to read the 14th of the 36 records that the query has found.
I am all but positive I'm not closing this database connection. The problem is happening while I'm looping off the reader data I just retrieved and in this query there was no ORDER BY clause.
I'm at a loss as to what to do about this. I'm not explicitly closing any database connections, and I'm getting the data right after performing the query.
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Oct 4, 2007
Greetings,
I wrote a very simple C# console application which was designed to give us a rough idea on the performance and reliability of SQLCE (the source code without metrics has been posted to this group recently). What I've found is that there are major performance and reliability issues with SQLCE 3.0 as opposed to SQLCE 2.0. Whereas SQLCE 2.0 seems to be fairly consistent in terms of it's memory usage and the amount of time taken to insert rows into the table regardless of the size of the table (to a limit, after about 300,000 records it too has major performance issues), SQLCE 3.0 seems to slow down noticably and continually use more memory even after a few thousand records are inserted and actually crashes (consistently) after 25592 records are inserted!
What gives? Based on this it would seem that SQLCE 2.0 is far preferable for an unattended device that needs an uptime of over 30 days whilst constantly (several times per minute) inserting into the database.
Thanks for your thoughts on this...
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Mar 3, 2008
I'm using SQL'05, VS'08 SQLCE 3.5 building VB.NET applications.
I'm using LocalDataCache to sync SQLCE and SQL'05
When I write a new record to SQLCE the corresoponding record in SQL'05 shows both LastEditDate and CreationDate values.
When I update the recored in SQLCE the LastEditDate gets updated, but CreationDate gets set to NULL.
Ideas?
David L.
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Mar 20, 2007
Hi,
Could some one guide me hot copy tables/Data from SQL 2005 to Sql 2005 Compact Edition?
Thanks
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Jan 3, 2007
Hello all,
I want to use SQLCE and WPF.
Can anyone direct me to some example code.
two way binding with a sqlceResultSet would be a great start.
(last inquiry was in Aug of 06)
Thanks
Mike (still trying to get the latest tech to work together) Greenway
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Apr 13, 2007
Hi,
Does anybody know how to upgrade a SqlCE db(.sdf) file from Version 3.1 to 3.5?
And a URL where can I get related Info.
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Nov 8, 2007
Last month , I have made a utility named sqlce viewer to help me manage sqlce 3.5 beta version databases .
The location is https://sourceforge.net/projects/sqlceviewer/
And now , I encounter a strange problem , need some help .
After user install this utility or run it standalone execute file .There has a error message poped before see the login in form . Even user has installed .net framework version 3.5 .
And if user has installed visual studio 2008 beta2 ,this problem will not existed .
This utility depend on these components :
1)WPF
2).net framework 3.5 beta
I don't know what's the reason clearly .
Anyone could give some advice are warm welcome.
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May 31, 2007
can anyone tell me how to open/create a SQL Server 2005 Compact Edition database using SQL Server Management Studio Express?
cheers
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Jul 30, 2007
I'm still having trouble deploying my Compact Edition application. The installation on other computers works, but if the program tries to start, i get the error message (translated from german):
"This Version of SQL Server 2005 Mobile Edition is not licencensed for productive use"
I always thought that there are no licence restriction with SQL Compact Edition.
Strangely the the programm works on some computers... as I think on all computers where Visual Studio is installed.
does that makes any sense to one of you?
thanks for any help,
Stefan
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Jun 3, 2004
Problem encountered:
Error Code: -2147467259
Message: A call to SQL Server Reconciler failed. [,,,,,]
Minor Err. 29006
Source: Microsoft SQL Server 2000 Windows CE Edition
Any idea what could be the possible problem?
I have been trying to search thru the internet for a resolution but most of the guides are very brief about the configuration of the merge replication in mssql2000 server.
e.g. http://msdn.microsoft.com/msdnmag/issues/03/09/DataPoints/default.aspx
This link above its recommended by Microsoft, but still doesn't really helps.
Does anybody have a step-by-step guide on configuring the merge replication in mssql? With diagrams preferred.
-OR-
Is there anything wrong with these codes:
oRpl.Publisher = "HANBIN"; // HANBIN is my database server name
oRpl.PublisherLogin = "LHP";
oRpl.PublisherPassword = "<password>";
oRpl.InternetUrl = "http://hanbin/ssce/sscesa20.dll";
oRpl.InternetLogin = "IUSR_HANBIN";
oRpl.InternetPassword = ""; // do i need to put sth here?
oRpl.Subscriber = "CESubscriberTest"; // Any names will do?
oRpl.Publication = "testdbpub";
oRpl.PublisherDatabase = "testdb";
oRpl.Distributor = "HANBIN";
oRpl.DistributorLogin = "sa";
oRpl.DistributorPassword = "<password>";
Any help from any genious will greatly be appreciated.
Regards,
Hanbin
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Apr 6, 2004
I’m using SQLCE and SQL Server2000 to replicate to a Pocket PC running PPC MS windows 2002. What I want to know is it possible to update my cab file on the PDA remotely?
Is it possible to install the cab file trough SQLCE?
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Jan 17, 2008
Hi,
Can I use SqlCe v3.1 and SqlClient v2.0 in one .net application? (Note: I can't use RDA or replication. SqlClient read and write data in ON-LINE mode, SqlCe store and manipulate with data in OFF-LINE mode.)
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Apr 20, 2007
MSDN has examples of deploying SQLCE privately for C# and VB.NET, but that doesn't seem to translate to C++. A .NET application just loads the assembly it needs from the local directory, but from what I can tell I need to use the OLE DB driver to use SQL CE in C++. The problem is that the OLE DB driver is a COM object that (presumably) needs to be registered.
Has anyone successfully used SQLCE from C++ without registering any COM objects? I'm thinking the only way to do that would be to call DllGetObject() on the DLL and get the object manually, but I've never done this so I'd hate to waste the time if there's an easier way, or if this won't work.
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May 21, 2007
In the readme of v3.5, it mentions that if I use 3.5 to open a database file created by previous version, the version number will be updated to 3.5, so I opened it in c# and run some select statement, then I run the verify() command and here's what's returned:
Source : d:Dataceguardian.sdf
Destination : n/a
Verifying - verMajor: 3, verMinor: 0, verBuild: 5300, verPoint: 0
Time - 2007-21-05 14:42:39.847
it seems the database file did not get updated to v3.5. Unless it's returning original info.
Then, I take this same database file and try to access from another project with v3.5 runtime + Enterprise Library, and it generates this error:
An exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in guardian.exe but was not handled in user code
Additional information: You are trying to access an older version of a SQL Server Compact Edition database. If this is a SQL Server CE 1.0 or 2.0 database, run upgrade.exe. If this is a SQL Server Compact Edition 3.0 or later database, run Compact / Repair. [ Db version = 3505053,Requested version = 3004180,File name = D:Dataceguardian.sdf ]
I am confused. Shouldn't 3.5 opens it up regardless of what version it is?
WL
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Jan 31, 2007
I am trying to soak in all this information regarding SQLCE and was hoping someone could set me off in the right direction.
Scenario:
I have an Windows Mobile 5.0 data collection application that I need to sync with a desktop database. I will need the ability to sync 1 or more Pocket PC's with a desktop database.
Questions:
1.) Assuming I need to sync the data, is using a SQLCE database on the device AND the desktop a viable solution?
2.) If not, would my only other option be to use SQL Server Express (SQL Server is not an option, $$$)?
3.) Keeping simplicity in mind, what would be my best choice of syncing technology? RDA? Merge Replication? Microsoft Synchronization Services for ADO.NET?
Generally speaking, I want to know if YOU were starting from scratch, what combination of technologies would you use?
Thanks!!!
Mike
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Apr 20, 2008
hi
I am new in SQLCE and I am trying to run SQLCE SERVER...
I have already downloaded the software and installed it as server on my computer...
I have checked the services running on my system but could not find SQLCE server, I don't know what is wrong with it and don't know what to do with SQLCE server ..
I will be glad if any one would tell me what to do...
thanks.......
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Jun 5, 2007
how can one ce database sync to two different server?
for example, i sync ce to server A, also i would like to sync to server B.
And the other case how can i re-sync ce data to same server if server has some data lost??
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Feb 21, 2008
I was initially interested in building my small retail app on Framework 3.5, until just now when I saw the download size. I won't make a single sale with that as a prerequisite.
I would, however, like to use VS2008 for this. If I target Framework 2.0, will I still be able to use SQLCE v3.5? The new SET IDENTITY INSERT functionality is an absolute requirement. (Note: I haven't installed VS2008 yet--I'm still investigating options.)
Thanks!
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Mar 11, 2008
I'm having a bit of a problem figuring out how to pass a dataset to sqlce to be appended to a table.
I'm using the CSVDataAdapter.dll to import from a csv file. I'm able to load the data into a dataset but from there I'm having my problem. Since the recordset is not from my table that I want to write, how can I pass the recordset for appending?
Code Snippet
Dim ds = New DataSet()
da = New CSVDataAdapter(apppath + "DBmyfile.csv", True)
'Fills the recordset with CSV file information
da.Fill(ds, "Newfile")
'display in grid
Me.DataGrid1.DataSource = ds.Tables("Newfile")
Could I use - USING?
Code Snippet
Using cmd As New SqlCeCommand("Newfile", conn)
cmd.CommandType = CommandType.TableDirect
'code to manipulate the resultset
Using ds As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable)
End Using
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Apr 25, 2007
When I execute EXEC sp_rename 'PATHSPECIMEN.PVVALUE', 'PVPROC', 'COLUMN', I am getting the following error:
Major Error 0x80004005, Minor Error 25621
> EXEC sp_rename 'PATHSPECIMEN.PVVALUE', 'PVPROC', 'COLUMN'
The specified argument value for the procedure is not valid. [ Argument # = 3,Name of procedure(if known) = sp_rename ]
Could some one guide me where I am wrong?
I am executing this query against SqlCE in Sql Server 2005 Management Studio.
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Apr 24, 2007
I unable to do the SCOPE_IDENTITY on a insert query at SQL Mobile.
I need to perform on this query the insert on Client table and to get the ID.
I am programming on Visual Basic on Visual Studio 2005
My code is:
Dim ClientID as Integer
Dim sql As String = "INSERT INTO Client(Number) VALUES('5'); SELECT scope_identity()"
Dim cmd As New SqlCeCommand(sql, connection)
connection.Open()
ClientID = Convert.ToInt32(cmd.ExecuteNonQuery())
connection.Close()
And I get an error like this:
There was an error parsing the query. [ Token line number = 1,Token line offset = 76,Token in error = SELECT ]
Thanks!
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May 30, 2007
Neither the SQLManagement Studio nor Visual Studio 2005 will open a 3.5 database. I understand that it's a "Orcas" technology but it works fine with vs2005 and Framework 2.0. I'm currently using VS2005 with CE 3.5 and using Rafik's Sync services, support for 3,5 would be a great help for the XSD and query creation.
Does anyone know when broader support for 3.5 will be available?
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May 7, 2007
Hi,
I have a simple query as follows:
SELECT COUNT(ID) FROM AI_DTREE DT WHERE PARENT =@pPID AND
CARTRIDGE_ID = @pCID AND COMMAND =@pCMD AND OBJECT =@pObj
Where @pPID=16700130,@pCID=43000000,@pCMD=€?=€?, and
@pObj=€?the cecum, identified by appendiceal orifice & IC valve€?
The filed OBJECT in AI_DTREE is of nvarchar(30)(of course the length of @pObj is more than 30 in my current query).
I have build the SqlCeCommand sccmd object with the above sql text and the parameters.
returnval = sccmd.ExecuteScalar();
When I execute the above statement I am getting the following error:
ex.Message = "@pObj : String truncation: max=30, len=55, value='the cecum, identified by appendiceal orifice & IC valve'."
But when I execute the same in Sql Server Management Studio against SqlCE db, it works fine and the result returnval =0.
How to overcome this SqlCeParameter issue?, for me it is difficult to messure the length of the filed before I exeuting the command.
Thanks
G Sreenaiah
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Apr 8, 2008
hi,
I am developing a PDA project using Windows CE 6.0
I develop an Application using VS 2008 and create a database using SQLCE 3.5 in VS2008.
I run the Application in Mobile 6 Emulator, it is correctly.
When I integrate it in My Custom OS, there is an error to connect the SQLCE 3.5 Database.
My CE 6.0 customed OS included: All 'File System and Data Store' Components.
I also Include the 7 DLL: in C:Program FilesMicrosoft SQL Server Compact EditionV3.5Deviceswce500armv4i
-sqlcecompact35.dll
-sqlceme35.dll
-sqlceqp35.dll
-sqlceca35.dll
-sqlceer35EN.dll
-sqlceoledb35.dll
-sqlcese35.dll
Also, I include the three CAB Files:
- sqlce.dev.ENU.wce5.armv4i.CAB
- sqlce.wce5.armv4i.CAB
- sqlce.repl.wce5.armv4i.CAB
I first Run the three CAB files in My PDA Emulator.
Then I run the Application located: Windows
All the files I imported in my OS is located in Windows
When I run my Application, there is an error prompted:
"The Database file cannot be found. Check the Path to the database.
[Data Source = WindowsTest.sdf]"
I try to use The Query Analyer to open the DB:WindowsTest.sdf,
The Error Message shown:
Error: 0x8004005 E_FAIL
Native Error: (25046)
Interface definning error: IID_IDBInitialize
Param 0 : 0
Param 1 : 0
Param 2 : 0
Param 3 : WindowsTest.sdf
I, then, create a database in my PDA Emulator using isqlw35.exe (Query Analyzer)
and located in WindowsTest2.sdf.
After create the Test2.sdf, I use the Query Analyzer to re-open it. It is correct with no error!
I use my Application to open the WindowsTest2.sdf, and it is correctly too!
Therefore, the problem would be: The SQLCE 3.5 database I created in VS2008, named 'Test.sdf'
cannot be opened in my customed ce 6.0 OS. However the database I created in my customed OS 6.0
emulator ,named 'Test2.sdf' works fine.
Is there any difference or what's wrong when I create a SQLCE 3.5 database and integrated in Windows CE 6.0???
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