DataBase Synchronization

Jun 9, 2004

Hi Guys:
I am trying to synchronize my home sqlserver database with a database on my web hosting company. I am not really sure how to go about it, any suggestions?

Thanks

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Dec 7, 2005

Hi,

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I have 2 distributed databases which need to be synchronized at regular basis.  I plan to write a service that does it.  But I'm just curious how to do the update incrementally.  Thanks

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Jan 10, 2007

I have a website that is running on the intranet and on a notebook. I have a notebook that is not always connected to the internet.. when it is not connected, it will read in some data from a barcode reader; and when it's connected, it will synchronize the data with the db on the intranet.. any idea on how to achieve this? 

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Jul 2, 2007

Hi All,
I want to do SQL Server DB Synchronization. The scenario is like this..
DataBase is presently on SQL Server 2005, When end user click on button or on some action event
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Plzzz Help!!!!!

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Jun 16, 2004

I am a complete novice so I would appreciate any help or suggestions.

I have two databases : 1 development DB, 1 production DB (both are SQL Server)

I make changes to development DB on a daily basis and I need a method to bring these changes across to production DB.

Currently I query the selected table in the development DB and write the DataSet to an XML file.

##
objDataSet.WriteXml(Server.MapPath("xDataDictionary.xml"))
##

Once I go to client site (where production DB is located) I want to generate a DataSet (which I am able to do) and compare this DataSet with the DataSet created when I read in the XML file.

##
'read in XML file
XMLDataSet.ReadXML(Server.MapPath("xDataDictionary.xml"))
##

There is a unique identifier in the table and XML file called 'FieldID'.
What I need to do is compare DataSet (from Production DB) with DataSet from XML file.

If there is a 'FieldID' in the DataSet from XML file that IS NOT in DataSet from ProductionDB I want to insert this node/row into the database.

Any suggestions?

crimsonIE ;-P

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Aug 17, 2001

I was wondering if anyone knows if there is any software available or
if it is easy to implement the following.

We are running a SQL Server database locally in house and also have
the exact same database running on a hosted webserver. The data
changes on both versions of the database daily and what we need to do
is figure out a simple easy / cheap way to have the two databases
synchronize with each other every evening so that the data is exactly
the same every morning.

I would appreciate any input.

thanks
Mark

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Oct 17, 2007

Dear all,

I am using SQL Server 2000 Ent/Dev edition. I have a 2 identical database in 2 different servers and i'm required to synchronize both database. However, i need to exclude some of the tables in during this process.

I tried to search this forum but can't find any solution. How can i perform the above task? BTW i can't use trigger as i have more than 100 tables.

HOpe someone can help. Thanks.

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Dec 12, 2007

Hi,
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Mar 10, 2004

Hi,

I'm currently working on a Database Synchronization project and I wondered if anyone had any ideas other than what I've got so far. The context of this project is that we have a central server which stores data for 10 different locations in a consolidated database. Each store contains a replica of that database, but with only data relevant to their own operation.

Store owners can change data at the store level or chain owners can change data at the central level, but for either change the other level has to be notified. I currently have 2 ideas on how to do this.

Note: I am using MS SQL Server 7 for the central, but MSDE (Desktop Edition) for the store levels. So, replication from the store to the server is not available. I think I need to actually code this on my own.

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Apr 16, 2008

Please can somebody help me with the following:

Our company has an enterprize site (a very large one). From time to time we need to make changes in it. In other words, we had to synchronize one database (local where we make all changes) and database on hosting. So, we did it manually (wrote scripts and inserted them in database on hosting). But as the databases grew it became impossible to synchronize everything manually. So we need some tool which could cope with this task. The problem is that, as I know, there are many tools which can do it, but we are tight in time and can't evaluate them all. Please share your ideas on what tool is worth evaluating?

Thanks in advance.

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May 27, 2008

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Feb 7, 2008

Dear All,
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I’m thinking of Incremental backup. Guide me in this scenario.

Thanks in advance.

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Jul 3, 2007

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Jun 23, 2005

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Oct 29, 2002

hi!all

i want to synchronize 2 sql server database resides at diffrent locations.

i want steps to do synchronization with the help of sql server enterprize manager as well from Sql - Dmo and VB.

:confused:

Thanks all in advance.

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Jun 19, 2008

Hi all,

We need an architecture in which one office is in pune and other in mumbai,

principal server is in pune and mirrored in mumbai,

now we need an architecture in which mumbai user will performing read only operation from mumbai server (local server )and write operation in pune server(remote server)

and pune user will be performing read and write operation in pune server(local server)

now when link between pune and mumbai goes down, mumbai users will not be having acess to pune server so at that time mumbai user will not be performing write operation in pune server (local server) and when link goes up we want mumbai server to get updated with pune server.

how this is possible or any other different solution to this, what mandatory is we want mumbai users to perform read operation from mumbai server ONLY.

Regards,

Vinit Fichadia

Thanks,
Vinit Fichadia

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Apr 20, 2007

Just wondering if someone can tell me exactly what is happening during the "synchronizing" phase during db mirroring. Basically I have 2 questions regarding restoring and synchronizing.



1. Assuming there is no initial mirroring setup. A backup is taken from serverA. After the backup (and before the restore on serverB), there are several INSERTS being performed on the serverA. After which, the backup is restored to serverB and the servers are mirrored from A to B. Does the synchronizing state mean that all transaction logs are being synchronized and serverB will now have those newly inserted transactions?



2. Does this mean that as long as the transaction log is not truncated on serverA, serverB will always have an exact copy of the serverA database?

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May 8, 2007

Hi there,
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Jan 13, 2006

Hi all,
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Sep 6, 2006

Hello everybody,

There is some strange behaviour i've recently noticed while watching synchronization progress in Replication Monitor on SQL 2005 Server Standard with merge replication configured. The merge process seems to repeat several times.

This is the initial synchronizaion (reinitalization at the subsciber). Client is using Microsoft.SQLServer.Replication objects from .net framework assemblies.

The synchronization starts normally (status is "Running"). The last message of selected session box shows (among other messages): "Beginning evaluating partial replication filters" then "Finished evaluating partial replication filters" and finally "Merge completed after processing xxx changes... etc." after a few seconds. Status changes to "Completed" and then... the merge process starts again!! "Beginning evaluating partial replication filters" etc. And this repeats about 15-20 times.

And so whole process takes about 15 minutes instead about 45 seconds to complete initial synchronization. The number of changes is "Merge completed after processing ..." never change since the first such message.

Is this some bug in web synchronization or some invalid configuration setting? Why does merge process repeat itself so many times??

Please help, thanks in advance.

Kuba

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Mar 8, 2008

All- I'm a newbie working on a VWD project. A couple questions arose when attempting to work with a project's dataset and its underlying SQL Server Express database: 


Is it true that when changing the schema of a database in SQL Server Express through the VWD Database Explorer, one must take care to manually make parallel changes in the dataset? For example, if you make a relation between two tables in Database Explorer, you must do the same with the counterpart tables in the dataset? For example, I find that if I delete or create a relationship between two tables in the database, I must manually do the same in the dataset.

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May 30, 2008

Hi all,

I have a SQL Server 2005 Compact Edition database that synchronizes with a SQL Server 2005 Standard database via merge replication.

The problem I have is when I cancel a synchronization, the database is left in such a state that I cannot add any new records. I dug around a bit and have found that in the INFORMATION_SCHEMA.COLUMNS view, AUTOINC_MAX has been incorrectly set to the same value as AUTOINC_MIN for the primary keys, which explains the 'out of range' error I get in my program when running off such a database.

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Any help would be immensely appreciated!

Regards,
Jonathan.

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Jan 21, 2008

Does Sql Server Compact Edition 3.5 support RDA synchronization with Sql Server 2000 database?

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Dec 21, 2005

Hi Everyone

I am at the stage of architecting my solution

My goal is to develop the system on a windows application and pda

There is a central server which will create a publication called inventory

The laptops which host the windows application will be subscribers to the central server using merge replication

The client now wants the PDA using SQL Mobile to synchronize with the local subscirber database on the laptop using active sync. They dont want to do it via WIFI to the IIS Server at the central server

I have been reading for days and I am still unsure whether this is possible to do.

I know Appforge provide a conduit for palm to access synchronization but not local sql databases

I would appreciate your help immensley

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Jan 21, 2008

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May 6, 2008

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Feb 19, 2007

Hello guys!
I went through the bunch of documentation pages about configuring the one for providing web subscriptions.
The most usefull for me were:

Security Architecture for Web Synchronization
How to: Configure an IIS Server for Web Synchronization (SQL Management Studio)
How to: Configure a Subscription to Use Web Synchronization
Topologies for Web Synchronization
Securing the Publisher
Subscribing to Publications
Mssubscription_properties (Transact-SQL)
How to: Configure a Subscription to Use Web Synchronization (Replication Transact-SQL)
sp_addmergepullsubscription (Transact-SQL)
Web Synchronization for Merge Replication
 But I still have questions about it. If you could help me with small notes about subscribing to web based merge publication I would really appreciate that!

I believe, I just need a bit of clarification. The target setting is simple as it is: a client should connect to the our hosting server via HTTPS and update his pull subscription on demand by running .NET application.
 Avoiding the server part, are the following steps correct and enough to accomplish what I need?
1. To create subscription, should I use the script:-- This script uses sqlcmd scripting variables. They are in the form-- $(MyVariable). For information about how to use scripting variables  -- on the command line and in SQL Server Management Studio, see the -- "Executing Replication Scripts" section in the topic-- "Programming Replication Using System Stored Procedures". -- Publication must support anonymous Subscribers.-- Execute this batch at the Subscriber.DECLARE @publication AS sysname;DECLARE @publisher AS sysname;DECLARE @publicationDB AS sysname;DECLARE @websyncurl AS sysname;DECLARE @security_mode AS int;DECLARE @login AS sysname;DECLARE @password AS nvarchar(512);SET @publication = N'AdvWorksSalesOrdersMergeWebSync';SET @publisher = $(PubServer);SET @publicationDB = N'AdventureWorks';SET @websyncurl = 'https://' + $(WebServer) + '/WebSync';SET @security_mode = 0; -- Basic Authentication for IISSET @login = $(Login);SET @password = $(Password); -- At the subscription database, create a pull subscription -- to a merge publication.USE [AdventureWorksReplica]EXEC sp_addmergepullsubscription         @publisher = @publisher,         @publication = @publication,         @publisher_db = @publicationDB,        @subscriber_type = N'anonymous'; -- Add an agent job to synchronize the pull subscription. EXEC sp_addmergepullsubscription_agent         @publisher = @publisher,         @publisher_db = @publicationDB,         @publication = @publication,         @distributor = @publisher,         @job_login = @login,         @job_password = @password,        @use_web_sync = 1,        @internet_security_mode = @security_mode,        @internet_url = @websyncurl,        @internet_login = @login,        @internet_password = @password;GO
 
What is  @job_login parameter here? As I understand, I will not run SQL Agent job as our client uses MS SQL Server  2005 Express. And I do not want to run it as we will provide a client with .NET application for performing synchrinization on demand
Parameter @publisher means full SQL Server instance name? For example, MYMACHINEMSSQLSERVER?
What user will be used to connect to the distributor and to the Publisher? Will it be @internet_login?
Do I need running sp_addmergepullsubscription_agent if I€™m going to use the following .NET application code to synchronize over the Internet?
 
2. To perform synchronization with our hosting servers, should a client use the following code?
            // Define the server, publication, and database names.
            string subscriberName = instanceName;
            string publisherName = instanceName;
            string publicationName = "AdvWorksSalesOrdersMerge";
            string subscriptionDbName = "AdventureWorksReplica";
            string publicationDbName = "AdventureWorks";
            string hostname = "adventure-works\garrett1";
            string webSyncUrl = "https://" + instanceName + "/SalesOrders/replisapi.dll";
 
            // Create a connection to the Subscriber.
            ServerConnection conn = new ServerConnection(subscriberName);
 
            MergePullSubscription subscription;
            MergeSynchronizationAgent agent;
 
            try
            {
                // Connect to the Subscriber.
                conn.Connect();
 
                // Define the pull subscription.
                subscription = new MergePullSubscription();
                subscription.ConnectionContext = conn;
                subscription.DatabaseName = subscriptionDbName;
                subscription.PublisherName = publisherName;
                subscription.PublicationDBName = publicationDbName;
                subscription.PublicationName = publicationName;
 
                // If the pull subscription exists, then start the synchronization.
                if (subscription.LoadProperties())
                {
                    // Get the agent for the subscription.
                    agent = subscription.SynchronizationAgent;
 
                    // Check that we have enough metadata to start the agent.
                    if (agent.PublisherSecurityMode == null)
                    {
                        // Set the required properties that could not be returned
                        // from the MSsubscription_properties table.
                        agent.PublisherSecurityMode = SecurityMode.Integrated;
                        agent.DistributorSecurityMode = SecurityMode.Integrated;
                        agent.HostName = hostname;
 
                        // Set optional Web synchronization properties.
                        agent.UseWebSynchronization = true;
                        agent.InternetUrl = webSyncUrl;
                        agent.InternetSecurityMode = SecurityMode.Standard;
                        agent.InternetLogin = winLogin;
                        agent.InternetPassword = winPassword;
                    }
                    // Enable agent output to the console.
                    agent.OutputVerboseLevel = 1;
                    agent.Output = "";
 
                    // Synchronously start the Merge Agent for the subscription.
                    agent.Synchronize();
                }
                else
                {
                    // Do something here if the pull subscription does not exist.
                    throw new ApplicationException(String.Format(
                        "A subscription to '{0}' does not exist on {1}",
                        publicationName, subscriberName));
                }
            }
            catch (Exception ex)
            {
                // Implement appropriate error handling here.
                throw new ApplicationException("The subscription could not be " +
                    "synchronized. Verify that the subscription has " +
                    "been defined correctly.", ex);
            }
            finally
            {
                conn.Disconnect();
            }
 
What does HostName parameter use for? What is that host? Subscriber€™s machine name instance name? Or Publisher€™s? Or Distributor€™s?
Why parameters PublisherSecurityMode and DistributorSecurityMode have value SecurityMode.Integrated? How it is used in the replication model for web synchronization? As I understood from the documentation, client (Merge Agent) should connect to the Subscriber, get the changes, connect to hosting server via HTTPS and perform transactions through the SQL Server Replication Listener, thus the internet login to the IIS should be used to perform all the operations on hosting server side? The same internet login will be used to get snapshot from UNC share?
If I€™ve chosen to use FTP to provide with snapshots, should I then provide ftp parameters to sp_addmergepullsubscription_agent stored procedure or they will be used automatically by ISAPI filters on hosting server?
Thank you.

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Synchronization

Mar 24, 2006

Hello,

I'm having to build a smart client application that works with an offline sql express database on the client. And works with several types of databases - that may be configured to work as a central server. The list includes the sql server family including 2000, 2005 and express and also IBM DB2.

I have to address some rather complex merge replication scenarios. By Merge I mean the ability to deal with handling and synchronization of bi-directional changes. More specifically changes to data may be made to any database in the system. either local or central.

I'm afraid, I cannot use sql replication in a heterogenous mode for several reasons. Some being - the database is being auto attached on the client, the application is expected to live up to the 'low impact' install ideology and should not need any major configuration etc.....

Are there any recomended approaches/Ideas one may use to acheive replication. Any links/information/ideas will be great.



Thanks,

Avinash





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Sep 25, 2007

First please look at image:





Code Snippet

http://www.patysie.com/screen.png

Can I be 100% sure that script component 3 (orange) will start AFTER script component 1 (yellow) is finished?

Sorry for link but I couldn't paste an image.

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Jan 31, 2008



Hi!

I'm developing a Windows Mobile solution (Pocket PC Win 5-6). I have Sql Server CE on the device and I use RDA (Remote Data Access) to pull the tables to the Sql Server CE. I use RdaTrackOption.TrackingOffWithIndexes so I can Alter the table design. Then I use the function SubmitSql to push back my changes. On the server I have a table for example Customers, it has a column called CustomerId with identity(1,1). Let's say the highest Id is 100 and the lowest is 50, when I add a record in the Sql Server CE it gets CustomerId = 1 then next one 2 etc which means identity is working but does not continue after 100. I don't need to use the CustomerId when I push my data back because I have sql syntax taking care of @@IDENTITY when inserting new records. Anyone who knows why it begins on 1 and not 101?

/Magnus

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Jun 6, 2002

hi!
all.

i want to create a web application architechture which having multiple web server.
this all web server having sql server database.
now what i want is to Keep all data in all databases.
means i want to synchronize my all sql servers.
it is also possible ki my one webserver can have multiple clusted database.
hope to hear soon from u people.

Regards
Viky

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