Programming SQL Express To SQL 2005 Replication

Feb 6, 2006

Hi Everyone

I have a huge problem after I noticed that SQL Server Agent has been removed

and need your advice about how to program replication between SQL Server Express and SQL Server 2005

So far I have encountered the following problems



SNAPSHOT

1. When I created my snapshot Irealized it wasnt running. I then read from the documentation that i had to resort to the Windows Synchronization Manager as there was no SQL Server AGENT within SQL Server Express to accomplish this function

I did this and it worked but wouldlike to control this programmatically as well



REPLICATION

2. Now I have a standalone SQL Server Express which is a subsciber to the SQL Server 2005 Database

How can I force the merge replication programmatically ie Vb.NET

Your kind advice is appreciated

Regards

Touraj

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Merge Replication RMO Programming

Jan 7, 2008



Hi everybody,

here is my code sample i'm using to do a web merge replication .

this code run perfectly in a windows application, however when i try to do it in a Web Service, i get the error

System.ApplicationException: The subscription could not be synchronized. Verify that the subscription has been defined correctly. ---> Microsoft.SqlServer.Replication.ComErrorException: The system cannot find the file specified.
at Microsoft.SqlServer.Replication.MergeSynchronizationAgent.Run()
at Microsoft.SqlServer.Replication.MergeSynchronizationAgent.Synchronize()
at ReplicationWebService.ReplicationService.Synchronize() in D:DataSamiWin DevelopmentAlsicoNet.rootDocumentsAnalysesTechnicalReplicationReplicationWebServiceReplicationWebServiceReplicationService.asmx.cs:line 91
--- End of inner exception stack trace ---

. I might think it would be a matter of identity running the web process.




Code Block
// Define the server, publication, and database names.
string subscriberName = "SpecificSrv01";
string publisherName = "AlsicoNet";
string distributorName = "AlsicoNet";
string publicationName = "AlsicoNetPub";
string subscriptionDbName = "AlsicoDb";
string publicationDbName = "AlsicoNet";
string hostname = "BercoNetDev";
string webSyncUrl = "https://AlsicoNet.int.alsico.be:1523/Replication/replisapi.dll";


MergePullSubscription subscription;
MergeSynchronizationAgent agent;
// Create a connection to the Subscriber.
ServerConnection conn = new ServerConnection(subscriberName);
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.Distributor = publisherName;
agent.HostName = hostname;
// Set optional Web synchronization properties.
agent.UseWebSynchronization = true;
agent.InternetUrl = webSyncUrl;
agent.InternetSecurityMode = SecurityMode.Standard;
agent.InternetLogin = @"AlsicoVirtualMergeAgent";
agent.InternetPassword = "xxx";
}
// 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();
}
}

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1) Users experience the following message:

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This problem should not apparently occur with SQL Server 2005 (or 2005 Express) instances with SP2 applied. All clients experiencing this problem have SP2 installed as does our Server and the retention period is 30 days. The subscribers have been replicating well under that.


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This indicates that the problem is perhaps data related as it appears localised to that database.

Below are two screenshots which may assist.

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Screenshot 2 Shows a rogue process which has appears on many of the problem child subscribers. It shows a process running with no end time even though the job indicates failure in the message and even though other replication attempts appear to have succeeded after it. This process stays in the history showing that it is running even when I can find no corresponding process for it.

Can anyone suggest a further course of action/further testing/further information required which may assist?

This is extremely urgent and any assistance would be greatly appreciated!

Thanks in advance!

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SQL 2005 Express

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Does anyone have any suggestions. I am sure it has something to do with the security setup on the Publisher, but I can't think of anything else to try.

Thanks

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PS:
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Hi all,
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/////////////////////----Form9.vb----//////////////////////////
Imports System.Data.SqlClient
Imports System.Data
Public Class Form9

Dim cnn1 As New SqlConnection

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cmd1.CommandText = "CREATE TABLE FromExcel (" & _
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Try
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cmd1.ExecuteNonQuery()
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Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
cnn1.Close()
End Try

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

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'Invoke the command
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Catch ex As Exception
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End Try

End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click


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Dim FromExcel As New DataTable
Dim RowForExcel As DataRow

FromExcel.Columns.Add("FirstName", GetType(SqlTypes.SqlString))
FromExcel.Columns.Add("LastName", GetType(SqlTypes.SqlString))
FromExcel.Columns.Add("PersonID", GetType(SqlTypes.SqlInt32))

'Create TextFieldParser for CSV file from spreadsheet
Dim crd1 As Microsoft.VisualBasic.FileIO.TextFieldParser
Dim strPath As String = _
Microsoft.VisualBasic.Left( _
My.Application.Info.DirectoryPath, _
InStr(My.Application.Info.DirectoryPath, "bin") - 1)
crd1 = My.Computer.FileSystem.OpenTextFieldParser _
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crd1.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited
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'Loop through rows of CSV file and populate
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'Rows collection
Dim currentRow As String()
Do Until crd1.EndOfData
Try
currentRow = crd1.ReadFields()
Dim currentField As String
Dim int1 As Integer = 1
RowForExcel = FromExcel.NewRow
For Each currentField In currentRow
Select Case int1
Case 1
RowForExcel("FirstName") = currentField
Case 2
RowForExcel("LastName") = currentField
Case 3
RowForExcel("PersonID") = CInt(currentField)
End Select
int1 += 1
Next
int1 = 1
FromExcel.Rows.Add(RowForExcel)
RowForExcel = FromExcel.NewRow
Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
MsgBox("Line " & ex.Message & _
"is not valid and will be skipped.")
End Try
Loop
Try
cnn1.Open()
Using sqc1 As SqlBulkCopy = New SqlBulkCopy(cnn1)
sqc1.DestinationTableName = "dbo.FromExcel"
sqc1.WriteToServer(FromExcel)
End Using
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
cnn1.Close()
End Try

'Read the FromExcel table and display results in
'a message box
Dim strQuery As String = "SELECT * " & _
"FROM dbo.FromExcel "
Dim str1 As String = ""

Dim cmd1 As New SqlCommand(strQuery, cnn1)
cnn1.Open()
Dim rdr1 As SqlDataReader
rdr1 = cmd1.ExecuteReader()
Try
While rdr1.Read()
str1 += rdr1.GetString(0) & ", " & _
rdr1.GetString(1) & ", " & _
rdr1.GetSqlInt32(2).ToString & ControlChars.CrLf
End While
Finally
rdr1.Close()
cnn1.Close()
End Try
MessageBox.Show(str1, "FromExcel")

End Sub

End Class
///////////////////////////////////////////////////////////////////////
This is Part 1 (The length of input exceeds 50000 characters). Part 2 will be posted in this site shortly.

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On server Web1, it was easy to create a Publication called Pub via the wizard for my database: TheDB. Then on Web1, again, I added a Subscription to the Publication, indicating my second server, Web2, and the same database name: TheDB (I have already backed up and restored TheDB to all my servers). Here's one of the sp's I ran on Web1:



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GO



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GO



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1. Do SQL Express 2005 and VB Studio Express 2008 work together?
2. If so, how?

It seems as though application each requires a different version of the database. If the database is usable in one, it is not usable in another.

Thanks for the help.

Julie

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Thanks in advance.
M. Scott Blalock

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