GUIDs Using NEWSEQUENTIALID() On SQL Server Mobile

Feb 28, 2006

Hello,

I've been thinking about using GUIDs as primary keys within my application. One problem I have with this approach is that GUIDs generated with NEWID() are not sequential, and this can have a huge impact on insertion performance due to fragmented indexes. It would seem that NEWSEQUENTIALID() solves this issue, however it doesn't seem very practical to use this on SQL Server Mobile. With SQL Server, you can specify an OUTPUT clause for an INSERT statement, and using this, determine what the last inserted GUID was. There doesn't seem to be such an option in SQL Server Mobile, so how can I get the last generated GUID so that I can attach children records to my parent record? It's been suggested that you could use the MAX() function to get the latest GUID, but there is a problem with this approach - NEWSEQUENTIALID() guarantees that the GUIDs generated will be sequential for the machine generating them, but makes no guarantees about how this will fit in with GUIDs generated by other machines. It is entirely possible that GUIDs generated by a different machine will be larger than the latest one generated on the current machine, so using MAX() to determine the latest value doesn't seem like a valid option to me.

Does anybody have any ideas on tackling this problem? Any thoughts on the suitability of using GUIDs as the primary key for SQL Server Mobile devices in general?

Thanks,
Adrien.

View 1 Replies


ADVERTISEMENT

SQL Server Mobile Merge Replication Walkthrough, Cant Find The .NET Framework Data Provider For SQL Server Mobile Edition.

Sep 9, 2005

Hi,

View 3 Replies View Related

Obtain The Last NEWSEQUENTIALID()

Nov 14, 2006

I'm using sql server 2005, I created a customer table and set the customer_id as an uniqueidentifier that is a NEWSEQUENTIALID()...when a user is created I want to obtain the last customer_id so that I can insert it in another table that has a one to many relationship with the customer table. Please help...how do i do this?.Thanx 

View 3 Replies View Related

Return NewSequentialID() From SP

Apr 24, 2008

Hi All
I am using SQL Server 2005 and creating a insert SP now. How could I return the newsequentialID() after the record inserted successfully?
 Regards
Alex

View 6 Replies View Related

SQL Server Mobile 2005 Merge Replication Problem On Windows Mobile 5.0

Aug 8, 2006



Dear ppl,

I am writing an application for a device (MDA Pro T-Mobile) having Windows Mobile 5.0 using

-MS .NET Compact Framework 2.0 SP-1
-SQL Mobile 2005.
-VS 2005 .NET

The application uses Merge Replication. The error occurs in the Synchronise() Method of the SqlCeReplication object.

"SQL Server Mobile encountered problems when opening the database."

repl.AddSubscription(AddOption.CreateDatabase);
repl.Synchronize();

I don't understand why I am having this error. It does create the database on AddSubscription() method but it is failing opening the database on Synchronise(). I have also tried uninstalling and then reinstalling all the SQL Mobile components in the following order.

-sqlce30.wce5.armv4i.cab
-sqlce30.repl.wce5.armv4i.cab
-sqlce30.dev.ENU.wce5.armv4i.cab

However, when i run this application on a device(Dell X50 AXIM) with Pocket PC 2003, it runs fine creating the database and sysnchronising it.

The target platform for the project is Windows Mobile 5.0 Pocket PC SDK.

Does any one have any clue what could be the problem ?

Regards
Nabeel

View 6 Replies View Related

Problem Using SQL Server Mobile 2005 With Windows Mobile 5 Application

Mar 23, 2006

Hello,

I am developping a non-managed C++ application for PocketPC using a SQL Server mobile database.

The application is compiled for PocketPC 2003 and uses SQL Server Mobile v2. I use Visual Studio 2005. But I need to compile the application for Windows Mobile 5.0 devices. So I installed the WM5 SDK and had the WM5 into my project configuration.

The "ssceoledb.h" which I include incluses the "transact.h" file. But my problem is that this file is only provided with the PocketPC 2003 SDK and not in the WM5 SDK.
So I cannot use the WM5 configuration project with SQL Server. I also tried with the last SQL Server Mobile 2005 (ie v3.0) and the "ssceoledb30.h" also includes "transact.h".

Did I miss something to install ?
Do you know how I can resolve the problem ?

By advance, thank you for any answer.

--
Gregoire

View 9 Replies View Related

Cannot Build SQL Server Mobile Solution For Windows Mobile 5

May 18, 2006

Using MS VS 2005 (incl SQL Server Mobile)
MS Pocket PC 2005 SDK

I am working on a project that builds for Pocket PC on both Mobile 2003 and Mobile 5. The project uses/will use SQL Server Mobile to store local data.

Project created from new with support for both platforms. I include required header files ssceerr30.h and ssceoledb30.h.

Project builds fine in WM2003 configuration, release and debug.

When I build for WM5 the compiler cannot find the header file transact.h. This is included from within ssceoledb30.h. Same as under WM2003.

In WM2003 configuration if I highlight the ssceoledb30.h include in Visual Studio and open the header, it takes me to <Visual Studio dir>SmartDevicesSDKSQL ServerMobilev3.0. I then locate the include for transact.h and do the same, which takes me <Visual Studio dir>SDKPocketPC2003include. The file exists.

If I repeat the above 'browsing' under the WM5 configuration, ssceoledb30.h takes me to a different copy in the WM5 SDK directory. There is no diff between the file here and the other copy used by WM2003. If I attempt to open transact.h - file does not exist.

Fix (which I'm not too sure about, i.e. is it OK?) - If I copy transact.h to the WM5 SDK directory, the project builds.

Why has transact.h disappeared from WM5 SDK?
I can find no ref's to this problem anywhere. Is my installation of the WM5 SDK corrupt? What else could I be missing?
Is there a sample for SQL Server mobile (like the NorthwindOLEDB sample) that comes configured to build for WM5?

View 1 Replies View Related

SQL Server Mobile Tutorial And Getting Proper Mobile DB Installation

Apr 24, 2006

Hi folks, I'm new to Windows Mobile progamming, and new to this forum. Apologies in advance if I'm asking a boneheaded question, but I've done searches and can't find anything directly applicable to my problem.

I'm currently walking through the published MS tutorial in setting up an SQL Server 2005 Mobile application that subscribes to a publication on SQL Server 2005 to exchange information.

I've gotten almost all the way through... successfully set up the server components, creating the publication, etc. On the mobile side, I've been able run the cab files to install the SQL Mobile components and to create the project, add the reference to the dll, and instantiate an engine object. It compiles.

The step in the tutorial after that, though, where you specify the data source from the "data" menu, I've got a problem. When I try to use the "new connection" dialog from choosing the data connection, "MS SQL Server Mobile Edition" doesn't show up as a choice. I've tried choosing any of the other combinations, and in teh subsequent "Connection properties" section my database, SQLMobile (as in their sample) is available, but I get an error when I choose it and click OK. Clicking on "Test Connection" gives me a connection successful message.

My guess is that something about the Mobile server side components is not installed correctly on my development machine, but honestly I have no idea how to begin to fix it. Has anyone seen this problem before and know how to resolve it?

Your time and any knowledge sharing is greatly appreciated.
Thank you,
-Dana

View 8 Replies View Related

SQL Server 2005 Mobile Edition ANd SQL Server CE - SHould I Have Uninstalled Mobile First ?

Sep 16, 2007



Hi:

When I try and connecto to SQL CE I always get an invalid operation exception. I"m afraid that I did not follow the proper install for Orcas Beta 2. I can't remember if I was supposed to uninstall SQL Mobile 2005 first or not.

All I know is when I try and use my SQL CE I can't connecto to a DB / sdf file ?

Any help would be appreciated I"m just starting to use SQL CE.

thanks
mark

View 2 Replies View Related

Creating A Mobile Application With SQL Server Mobile - FIX

Jul 21, 2006

This is a great tutorial and it's a shame one of the more important steps was missed.
In the €œCreate the snapshot user€? section you you find the steps to create the snapshot_agent account. Then in the €œCreate the snapshot folder€? section you find the share and folder permissions. However, at no point do the instructions advise you about adding the snapshot_agent to the SQL Server Logins. The result is that agent cannot perform the initial snapshot but you won't find this out until 50 steps later after Step 10 in the section  €œCreate a new subscription".
 
To get back on track, openthe Object Explorer's Security section and add the snapshot_agent to your logins. Then using the "User Mappings", set an appropriate level for the SQLMobile database role. Once completed you then need to run the agent.
 
Right-click the SQLMobile publication you created and select "View Snapshot Agent status". From that dialog you can select "Start" to run the agent. When it completes, you can return to the tutorial section "Create a new subscription" and continue with the tutorial.
 

 

View 4 Replies View Related

Creating A Mobile Application With SQL Server Mobile

Nov 3, 2007

I am studying the tutorial in SQL Server 2005 Mobile Edition Books Online, and the topic is Creating a Mobile Application with SQL Server Mobile. I have got a problem when creating a new subscription after created a new SQL Server Mobile database. And the problem is shown below:

New Subscription Wizard

- Beginning Synchronization (Success)

- Synchronizing Data (100%) (Error)
Messages
* Failure to connect to SQL Server with provided connection information. SQL Server does not exist, access is denied because the IIS user is not a valid user on the SQL Server, or the password is incorrect.
HRESULT 0x80004005 (29061)

* 無法完�作業。


- Finalizing Synchronization (Stopped)

- Saving Subscription Properties (Stopped)

Before I have met this problem, I have finished all the task. And I can browse the localhost web site by using anonymous account even I use internet explorer or browse the directly in IIS.

Does anyone can solve it?? Thank you very much~~~

View 3 Replies View Related

SQL 2012 :: NewSequentialID - Error Validating The Default For Column

Oct 8, 2014

Microsoft SQL Server 2012 - 11.0.2100.60 (X64) Enterprise Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)

we are using the default of newsequentialID() as the key on some tables and getting the error
Error validating the default for column xxx

When first saving the table if the value is entered as newsequentialid() the save works but on any subsequent design change I get the error.

If you click Yes to continue it works fine.

The value that is in there once its saved shows up as (newsequentialid()) if you change it back to not have the outer parenthesis it saves without issue.

View 3 Replies View Related

Sequential Guids

Oct 31, 2007

 Hello,I am creating a new database and I was advised to use Sequential Guids.I was reading some information and, as far as I understood, I can use NEWSEQUENTIALID. This can be used when I have a uniqueidentifier column as the key of a clustered index to avoid fragmentation during insert. Ok, so I use NEWSEQUENTIALID instead of NEWID.But I will use LINQ most of the time instead of Stored Procedures.So can I specify in my tables scripts to use Sequential Guids when, for example, a record is created? And am I right when using Sequential Guids?Here is a part of my code:-- Blogs ...
create table dbo.Blogs
(
BlogID uniqueidentifier not null
constraint PK_Blog primary key clustered,
Title nvarchar(400) null,
Description nvarchar(2000) null,
CreatedDate datetime null
)

-- Posts ...
create table dbo.Posts
(
PostID uniqueidentifier not null
constraint PK_Post primary key clustered,
BlogID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nchar(1000) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
IsPublished bit not null,
constraint FK_Posts_Blogs
foreign key(BlogID)
references dbo.Blogs(BlogID)
on delete cascade,
constraint FK_Posts_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade Thanks,Miguel

View 2 Replies View Related

Using Guids Instead Of Identities

Sep 21, 2005

I'm really sorry if this is too OT but it is related to replication...

View 1 Replies View Related

Frustration With UniqueIdentifiers (GUIDs)

Feb 26, 2004

We're trying to set a new standard at my office, of using GUIDs as database ID fields - all new tables in all databases will have a GUID as the ID field, using the UniqueIdentifier data type.

The problem that we are running into, is that different applications interpret the UniqueIdentifier data type differently - ADO 2.x interprets it with the opening and closing { } braces. ADO.NET does not include the { and } in the GUID structure, SQL Server Query Analyzer does not include the { } braces, and SQL Server Enterprise Manage does include the { }

so we end up with results like this:

ADO 2.x: {012345678-abcd-ef01-2345-6789abcd}
ADO.NET: 012345678-abcd-ef01-2345-6789abcd
Query Analyzer: 012345678-abcd-ef01-2345-6789abcd
Enterprise Manager: {012345678-abcd-ef01-2345-6789abcd}

The problem with this is in two parts:
1) VB6 does not have a GUID structure or data type, so we are treating GUIDs as strings... but VB6 doesn't recognize "{012345678-abcd-ef01-2345-6789abcd}" and "012345678-abcd-ef01-2345-6789abcd" as the same string
2) when sending a URL link through an email, the { } braces break the link - in all email applications that we have tested. This include Groupwise 6, Groupwise 6.5, IPSwitch Web IMail, Outlook 2000, and Outlook Express (IE 6).

We're becoming very frustrated with the problems at hand, and need to know how others have worked around these problems. Please respond with any kind of advice or any real life situations where you have encountered this and found a solution, etc.

Thanks.

View 3 Replies View Related

PackageID And GUIDs In ExecuteSQL Task

Jan 18, 2006

Am I looking at a potential bug here or do I not understand the feature properly? I have an ExecuteSQL task that inserts into a table for logging and includes the System::PackageID as one of the values. It's stored in my table as a uniqueidentifier. When I set the output variable in Parameter Mappings tab of the Execute SQL task to VarChar, all works great. WHen I set it to GUID as the data type in that tab, it outputs a different GUID than the actual System::PackageID variable.

-- Brian

View 1 Replies View Related

Use Of Guids As Unique Identifiers - Good Or Bad?

Jan 30, 2008

Are Guids good or bad? I've spoken to people who hate them in databases, but the db's I'm using right now all use them, so there must be *some* people out there who like them. I'm interested to know what other people think.

thanks!

View 6 Replies View Related

Seeded(int) Identity Columns Vs. UniqueIdentifiers(GUIDs)

Jul 1, 2003

I need gurus input on the pros and cons of Seeded(int) Identity colums vs. UniqueIdentifier(GUIDs) columns for my db design.

As I understand it, merging the data of 2 independent db's both using IDENTITY columns would be very hairy because of the possibility of overlap. GUIDs are much more likely to be unique across different servers.

What I'd like to hear from others are the other pros and cons of the situation. I of course understand the performance hit suffered at the hands of the GUID.

Thanks for your help!

View 29 Replies View Related

Can I Update GUIDS In Sysmergepubliction And SysmergeAricles In Sqlserver 2005 ?

Dec 14, 2006

Hi fellows ,

there is a senerio where i want to  update GUIDS in columns "pubid" and "artid" generate in sysmergepubliction and sysmergeAricles respectivly  in sqlserver 2005 ?

2nd is there any easy way to generate scripts of  triggers of all replicated tables in subscriber at one .

View 1 Replies View Related

Complex Copy Routine, Mulitple Tables And Changing GUIDs

Dec 11, 2007

hello,
I have several tables that have guids as their primary keys and the tables are related as follows:
Table1 - primary key = ServiceNo (Guid), Filter Key = CampaignNo
Table2 - primary key = CostBasisNo (Guid), Foreign Key = ServiceNo (from Table1)
Table3 - primary key = UserId, Foreign Key = ServiceNo (from table1)
Table4 - primary key = SourceServiceNo (Foreign Key from Table1), MemberServiceNo(Foreign Key from Table1)
what I need to do is copy all records from Table1 where CampaignNo = @CampaignNo and insert them into table1, this I can do easily but I will generate a new ServiceNo for each one and associated a new CampaigNo which is fine.
The problem comes in that I need to also copy the contents of Table2 = Table3 for all ServiceNos that have been copied from Table1 but insert the new Guid that will have been created when copying the rows in Table1
This is further compounded when I need to do the same to Table4 but this time I need to insert the newid's for SourceServiceNo and the related MemberServiceNo which all would have changed.
I haven't the first clue where to start with this task, do I need to use temporary tables, cursors? any help gratefully received, even if it's a pointer to the most efficient approach.
 regards
 
 
 

View 4 Replies View Related

Guids Are Not Very Guid! Updating In DetailsView,FormView (Object Must Implement IConvertible)

Dec 1, 2005

I've been playing around with the new data controls (DetailsView,FormView) and have been having problems when attempting to update a record that has a uniqueidentifier as its primary key.I get the error message:
Object must implement IConvertible. 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.InvalidCastException: Object must implement IConvertible.I gather this is because there is a bug that has propagated from the beta version.One suggested work around is from http://64.233.183.104/search?q=cache:GDjA62POtgcJ:scottonwriting.net/sowBlog/archive/11162005.aspx+Implicit+conversion+from+data+type+sql_variant+to+uniqueidentifier+is+not+allowed.+Use+the+CONVERT+function+to+run+this+query.&hl=en
The crux of the problem, it appears, is that the <asp:Parameter> value for the uniqueidentifier field is, by default, set to Type=�Object�. To fix this, simply remove the Type property altogether. That is, change the SqlDataSource parameter setting from something like:
<asp:SqlDataSource ...>  <InsertParameters>    <asp:Parameter Name=â€?UserIdâ€? Type=â€?Objectâ€? />    ...  </InsertParameters></asp:SqlDataSource>
to:
<asp:SqlDataSource ...>  <InsertParameters>    <asp:Parameter Name=â€?UserIdâ€?  />    ...  </InsertParameters></asp:SqlDataSource>
This change worked for me; once the Type was removed the exception ceased and the updates/inserts worked as expected.Unfortunately this only partially worked for me as while it is fine for deletes it won't work for updates.If anyone can help shed any light on this I would greatly appreciate it.CheersMark

View 28 Replies View Related

SQL Mobile 2005 Replication - SQL Mobile DLL Could Not Be Loaded - Error 28559

Jun 15, 2006

I am migrating a pocket PC application from VS 2003 to VS 2005 and a few weeks ago I hit the following problem when replicating

A SQL Mobile DLL could not be loaded. Reinstall SQL Mobile. [ DLL Name=sqlceca30.dll]

Scanning forums for help I saw that other people had had this problem and one

http://www.eggheadcafe.com/aspnet_answers/NETFrameworkCompactFramework/Feb2006/post25814466.asp

suggested that this problem could be circumvented by getting the replication object early and then continuously using the same object for subsequent replications.

I did this and it works a lot better now but ever so often I get another error which is

Native Error 28559 SQL Mobile encountered problems when opening the database

My only option at this point is to stop and start the application which cures the problem.

View 4 Replies View Related

Access SQL2005 MOBILE Database In A VS2003 Mobile App

Mar 6, 2006



It is possible to access a Sql Server 2005 Mobile database in a VS2003 application (compact framework) ?

Thanks

Robson

View 4 Replies View Related

Error #25123 A Sql Mobile DLL Could Not Be Loaded. Reinstall SQL Mobile.

Sep 8, 2007

I receive error 25123 on my PPC (audiovox 6600) in a reproducable way (usually) with .net 2.0 application that is using SQL CE that I wrote:

Open the application
Connect to the database
Close the applicaton
Re-Open the application
Connect to the database <-- Error occurs


I will also receive the error if my application isn't the first application launched (or very close to the first to launch).

I don't believe it's a memory issue as according to the memory manager I have plenty of memory:

At boot up only start screen items loaded: 18.46 Used 49.89 Free
Launch Resco File Explorer to click EXE: 19.18 Used 49.18 Free
Launch my application (no DB connection): 23.64 Used 44.71 Free
Connect to the DB and do select count(*) from a table with 0 rows: 26.27 Used 42.08 Free
Close the application (this.Close() on the form: 19.38 Used 48.97 Free
Relaunch App and connect to DB receive error: around 38 Used around 30 free

I was unable to reproduce the issue right now while typing this message, the last sets of numbers are from memory, and include other applications that are currently running.

The only way I have to get SQL CE to load again is to soft reset the PPC. If the application is able to connect to SQL CE at least once it is fine up till I close it and re-open the application. So it either connects and runs great, or it can't connect at all.

Any help in resolving this issue would be greatly appreciated.
Wayne

View 1 Replies View Related

SQL Server 2005, SQL Server Mobile, SQL Server Management Studio. Unsupported HTTP Function Call

Sep 5, 2005

Hi All,

View 14 Replies View Related

A Call To SQL Server Reconciler Failed. SQL Server 2005, SQL Server Mobile Merge Replication

Oct 2, 2005

Hi,

View 36 Replies View Related

SQL Server Mobile

Apr 6, 2007

Hi,

I have created an SQL Server Mobile Database, is it possible to ODBC to it by creating a new data source, under admin tools in Windows XP?

Cheers

View 4 Replies View Related

SQL Server Mobile

Dec 30, 2006

Dear All



Please advice how I could Make relationships in SQL server Mobile. as the Relationship diagram is not available



Thankx

View 3 Replies View Related

About SQL Mobile Server

Feb 20, 2006

I need to export(import) data from Pocket PC(SQL Mobile Server) to SQl Server 2005(central data storage) in real time, if anyone knows how it would be better and faster to do...Maybe someone have done something like this...

Sorry for my English, I use it at first for last 6 years...)))

View 9 Replies View Related

ReadWriteDeleteMessageFile FAILURE With SQL Server Mobile Server Agent Diagnostics

Jul 31, 2007

Hi all.

Is there a difference with sql replication between sql server 2005 64bit and sql server 2005 32bit?
Both are on a Windows 2003 server. One is 32 bit and the other one is 64 bit.
The first time I set up sql replication (test environment), it was on a 32 bit sql server. This worked fine.
The second time I wanted to set up replication (live environment), it was on a 64 bit sql server. This didn't worked fine.


I can't call the sqlcesa30.dll file on the 64bit server with IIS. So I called the dll via a remote IIS server.
This worked but gave me the following error when calling the following URL:
http://domain/PDASYNC/sqlcesa30.dll?diag

SQL Server Mobile Server Agent Diagnostics
2007/07/31 14:26:55


General Information


Item
Value

Server Name
domain

URL
/PDASYNC/sqlcesa30.dll

Authentication Type
Anonymous

Server Port
80

HTTPS
off

Server Software
Microsoft-IIS/6.0

Replication
Allowed

RDA
Allowed

Logging Level
0


Impersonation and Access Tests


Action
Status
ErrorCode

Impersonate User
SUCCESS
0x0

ReadWriteDeleteMessageFile
FAILURE
80070003


SQL Server Mobile Modules Test


Module
Status
ErrorCode
Version

SQLCERP30.DLL
SUCCESS
0x0
3.0.5207.0

SQLCESA30.DLL
SUCCESS
0x0
Unknown


Reconciler Test


Reconciler
Status
ErrorCode

9.0 Database Reconciler
SUCCESS
0x0

8.0 Database Reconciler
FAILURE
0x8007007E


SQL Server Module Versions


Module
Version

sqloledb.dll
2000.86.1830.0

9.0 replrec.dll
2005.90.2047.0

9.0 replprov.dll
2005.90.2047.0

9.0 msgprox.dll
2005.90.2047.0

8.0 replrec.dll
2000.80.760.0

8.0 replprov.dll
2000.80.760.0

8.0 msgprox.dll
2000.80.760.0


After seeing this I looked up what ReadWriteDeleteMessageFile could mean. It appeared to be some NTFS acces problem. But when I checked the security settings, it all seemed to be ok.

Has anyone any idea what else to check? Or is sure that I must have done something wrong?

Thanks in advance,
Arjan

View 3 Replies View Related

SQL Mobile Server 2005 To SQL Server Developer Edition 2000

Oct 30, 2006

I am looking for a detailed tutorial that explains how to set-up merge replication services for a major project. I have seen all of the claims that SQL Mobile Server 2005 is able to connect to a merge publication with SQL Server 2000. However, where are the tutorials? I must have a proof of concept in a few days to quote this project. Can anybody help with this issue? Thanks!

View 1 Replies View Related

MSDE &&amp; SQL Server 2005 Mobile Server Tools Problem

Jan 24, 2006

After installing MSDE(with SP4) and SQL Server 2000 SP4 Replication Components, the SQL Server 2005 Mobile Server Tools installation fails when running the System Configuration Check with a SQL Server requirement Error.

"You must first install the Replication Components for SQL Server 2000 SP 3a or higher or the SQL Server 2005 Replication Components"

Am I getting this error because I'm using the Desktop Engine version of the SQL Server 2000??

View 7 Replies View Related

Newbie: Sql Mobile Or It Is Sql Server Everywhere

Sep 18, 2006

I'm confused by the MS literature. I think that "SQL Server Everywhere" is the new name for what was "SQL Mobile". Am I correct?



TIA,

barkingdog

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved