How To Enable Clients To Access The Same DB Via SQL Express
Nov 12, 2006
Hi to all!
My problem comes from this situation: I have two PC connected via a network calble; on the first I have SQL Server 2005 Express, an MDF data file in a shared directory under the "Document and Settings" path, and my program written in VB .NET 2005. On the second PC I have only my program, and I would like to have it connect to and work on the MDF on the first PC.
The program on the first PC works well and uses a connection string like the following:
Data Source=.SQLEXPRESS;AttachDbFilename=<path><name>.mdf;;Integrated Security=True;User Instance=True
I am able to access to SQL Express from the second PC (I have enabled the Client to use the right TCP ports, told the firewall to let them work and enabled the Guest user on the first PC to use SQL Express), but from Visual Studio Server Explorer I cannot reach my data file: any attempt fails telling me that I cannot open it because is in a shared location... I can only open the DBs located in the "Data Directory" of SQL Express...
In other words, what should I do to have two or more clients work on the same DB under SQL Express? Is it mandatory that the DB .MDF file resides in the "C:ProgramsMicrosoft SQL ServerMSSQL.1MSSQLData" directory so that it can be permanently attached to SQL Express?
Thanks for your help!!!
Roberto
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Sep 28, 2006
Hi Everyone,I have one database file which needs to be accesable to both a .net website and a vb.net application.The application collects data from the 'real world', processes it and adds the data to the database. The Website reads data from the database and displays the data in a graphical format.Now for the problem; While the Application is connected to the database (adding data), the Website is denied acces to the database. All connections to the DB are disposed when the Application is not uploading data, but the Website continues to be locked out (making it pretty useless) Closing the Application makes the Website work fine, but of course this means no 'real world' data can be updated.Can anyone suggest what is happening here, and more importantly how to fix it? A walkthrough must be available for this problem somewhere,... I just can't find it :(Thanks all,*The Stressed One*
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Aug 31, 2007
Hi all,
In my SQL Server Express (that is installed in my Windows XP Pro PC), SQL Server 2005 Network Configuration has Protocols for SQLEXPRESS. I tried to do "Enabling CLR Integration" in my SQL Server Express: (1) If I clicked on "Surface Area Configuration for Services and Connections", I got an error "An exception occurred in SMO while trying to manage a service, (Microsoft.SqlServer.Smo) Additional information: Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum) The operation could not be completed. (WinMgmt). (2) If I clicked on "Surface Area Configuration for Features, I got a different error "Computer localhost does not exist on the network, or the computer cannot be configured remotely. Verify that the remote computer has the required computer has the required Windows Management Instrumentation components and then try again. (SQLSAC) Additional Information: An exception occurred in SMO while trying to manage a service. (Microsoft.SqlServer.Smo). Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum) The operation could not be completed. (WinMgmt). Please help and tell me how I should do to get "Enabling CLR Integration" in my SQL Server Express done and how I can create SQLCLR Project in VB 2005 Express.
Thanks in advance,
Scott Chang
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Jan 22, 2007
HI
Q1: Does Sql Server 2005 Express support Web/Internet to other SQL Server 2005 Express Clients or does it have to Synch across the internet to a fully installed setup SQL Server 2005 with IIS?
Q2: Does SQL Server 2005 Express support Direct Replication between other SQL Server 2005 Express clients?
Regards
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Jul 20, 2005
Hello AllI am using SQL server 2000 as the backend of my application but don'twant my clients tobe able to view or edit the database tables, storedprocedures , view etc using enterprise manager or query analyser (orsimilar tools)How can this be done ?I searched a lot for this but unable to get the correct answer isthere anybody to give full solution regarding this.Please relpy me as early as possible
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Jan 21, 2008
Hi.,please help.,i get this error.,i made my web and deploy it in a different system which is winserver03, we have in the same network.how will i enable SQL remote access:
Server Error in '/' Application.
An error has occurred while establishing a connection to the server.
When connecting to SQL Server 2005, this failure may be caused by the fact that
under the default settings SQL Server does not allow remote connections.
(provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance
Specified) 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.Data.SqlClient.SqlException: An error has occurred while establishing
a connection to the server. When connecting to SQL Server 2005, this failure
may be caused by the fact that under the default settings SQL Server does not
allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error
Locating Server/Instance Specified)Source Error:
An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of the
exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException (0x80131904): An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +800131 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) +737554 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +114 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +421 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +173 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +133 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +30 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +494 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +121 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +137 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +83 System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1770 System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +17 System.Web.UI.WebControls.DataBoundControl.PerformSelect() +149 System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +70 System.Web.UI.WebControls.GridView.DataBind() +4 System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82 System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +69 System.Web.UI.Control.EnsureChildControls() +87 System.Web.UI.Control.PreRenderRecursiveInternal() +50 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Control.PreRenderRecursiveInternal() +170 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2041
Version Information: Microsoft .NET Framework Version:2.0.50727.1433;
ASP.NET Version:2.0.50727.1433
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Jun 8, 2015
On my SQL Server 2014 SP1 on Windows Server 2012 R2, allow inbound TCP 1433 and UDP 1434 seems to not be enough for managing remotely any named instance on this server.
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Aug 1, 2007
Q1: Can I just open these protocols I need (see web links below) and then close them down again after SQLCacheDependency has been enabled? Note: The website (asp.net 2.0/SQL server Express) operates OK right now with asp.net - but it does not have SQLCacheDependency enabled.
Problem: When I try to do this I keep on getting this error message:
"An error has occurred when establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections."
None of these 3 commands have worked (all give the same message above):
aspnet_regsql.exe -U user1 -P pwd1 -S server1/SQLEXPRESS -d myDBName -ed aspnet_regsql.exe -E -S server1/SQLEXPRESS -d myDBName -ed aspnet_regsql.exe -E -S .SqlExpress -d myDBName -ed
I am trying to run these commands via a MSTSC connection. Q2: Is that (terminal server) the problem (the "remote connection") complained of above ?
This is the command that worked on my local dev machine:
aspnet_regsql.exe -E -S .SqlExpress -d myDBName -ed
Q3: Must I really go through the procedure "How to: Configure Express to accept remote connections" at:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277http://blogs.msdn.com/sqlexpress/archive/2005/05/05/415084.aspx
I don't really want to have SQL server accepting any connections as the last time it was listening on these ports we had so many attacks being made that it was filling up the logs!
What I can't understand is that every night the database is backed up with the following command line code (operating as a Scheduled Task):
sqlcmd -s server1/SQLEXPRESS -i MW4BAK.SQL -E
Q4: So if the server is happy receiving commands from 'sqlcmd.exe' why does it have such problems with 'aspnet_regsql.exe'
Q5: If I grouped those statements I need to setup SQLCacheDependency under a Scheduled Task would they work (as there would presumably be no remote connection then) or is it something in the nature of the connection established which allows sqlcmd.exe to work but stops aspnet_regsql.exe?
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Jan 23, 2007
i am working on upgrading the clients and server computers from 2000 MSDE to 2005 SQL Express Adv. Plan to upgrade using the template.ini.
i can find the version of sql server running on th server by @@version but how do i find the version of client connctivity components the computer has installed in order to ugrade?
1. somehow i need to know whether to upgrade a client computer CONNECTIVITY COMPONENTS from 2000 to 2005?
2. is there a way to enable tcp/ip in installation script of SQL Express?
THANKS
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Nov 14, 2007
I've been reading a million and one posts on replication
My scenario is that i have a live SQL 2000 server. In a DR invokation, i'e i've lost my live sever, i want to be able to access the same data at the DR (SQL 2000) site and have it accessable to the users. DR server has a different name to the live box.
Replicate
Master
CRMDatabase
Data changes all the time but can have hourly replication of transaction logs for this example. I've currently researched a sp called update logons but this has to be fed each account name to enable them on the new server. There must be a way to activate all CRMDatabase logons with the new server?
Could someone be kind enough to lead me through a step by step guide on the best solution.
Thanks a lot
David
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Feb 4, 2006
Looking for help in diagnosing this error:
Unable to open the physical file "C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatacartracker.mdf". Operating system error 32: "32(error not found)".
An attempt to attach an auto-named database for file C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatacartracker.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
I am using Visual Basic 2005 Express Edition along with SQL Server 2005 Express Edition.
Now here's what I did:
Rather than use the Database Explorer within VB2005 EE to create my database, I thought I would try creating my database externally using the downloadable "SQL Server Management Studio Express" tool. (I figured that if I had a stable data model for my database, I could side-step the copying/overwriting issues that come with creating a database as part of a VB solution.)
So having gotten my database setup and populated with some sample data, I am now trying to connect to it from Visual Basic. In VB (in the context of working on a VB Solution), I do the following:
Select Add New Data Source... from the Data menu to bring up the Data Source Configuration Wizard.
Choose "Database" for the data source type and click Next.
Click "New Connection..." to bring up the Add Connection dialogue.
For data source I choose "Microsoft SQL Server Database File", with ".NET Framework Data Provider..." as the data provider.
Navigate to my existing database file (in "C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLData" folder).
Use Windows Authentication.
When I click "Test Connection" or just click "OK", i get the Microsoft Visual Basic 2005 Express Edition error shown at the top of this message.
Is this occuring because I'm trying to access my database as an .MDF file rather than through Named Pipes / Shared Memory / TCP/IP? If this is the case, is there any way that I can tell VB2005 EE to use Named Pipes / Shared Memory / TCP/IP? Is this a fundamental limitation of VB2005 EE?
Thanks in advance to the guru who is able to explain this to me...
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May 29, 2008
I'm trying to get the last ten unique clients viewed by each user. I have tried using the TOP (N) but it does not show the last ten just any ten.
When a user views a client record, a record is saved to the tblUserRecentViewedClients table and includes logID (key), client_id (int), username (nvarchar), lastviewed (datetime).
Here is what I have so far. Can anyone offer any suggestions?SELECT TOP (10) tblUserRecentViewedClients.UserName, tblUserRecentViewedClients.Client_ID, tblClient.FirstName, tblClient.LastName,
tblClient.CompanyName
FROM tblUserRecentViewedClients INNER JOIN
tblClient ON tblUserRecentViewedClients.client_ID = tblClient.client_ID
WHERE tblUserRecentViewedClients.UserName=@UserName
GROUP BY tblUserRecentViewedClients.UserName, tblUserRecentViewedClients.Client_ID, tblClient.FirstName, tblClient.LastName,
tblClient.CompanyName
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Jan 15, 2004
If i use sql server as my backend and microsoft access as my frontend do i need to purchase client access lisences??
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Feb 15, 2000
I have to install SQL 7.0 Client software (query analyzer, client connectivity) on A LOT of workstations that only have Internet Explorer 3.0 ... Is there any way of getting around not upgrading to 4.0 sp1? If I try to just install 7.0 client, it errors out saying I need IE 4.0sp1. I really don't want to have upgrade IE!!!
Thanks in advance.
Laura
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Sep 2, 2000
Is anyone using a mail client other than Outlook to work with SQL Server 7.0? If so, what are you using, and what is your opinion of it?
Doug
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Nov 4, 1999
Are there any issues with retaining both the SQL 6.5 and SQL 7.0 clients as
installed components on our desktops? We have a number of SQL 6.5 and 7.0
Servers which have some fairly specific client side requirements and I am
trying to ascertain what the potential impact is to rolling out SQL 7.0
components to a separate directory to allow all applications to coexist. My
specific concerns are with the shared DLL's in system32 and with updated
7.0 executables that share the same name (i.e. BCP, etc) and resultant path
issues.
Any feedback or articles that cover this subject would be appreciated.
Thanks,
A
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Mar 11, 2004
We use mdac 2.7 on all servers and clients
We want to update servers to 2.8
Do we MUST update clints to 2.8 or they
can continue to run with 2.7
Thank you
Alex
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Oct 25, 2005
I have situation like this:
Company with one head office and one remote office. In the two offices I have two domains with two PDCs. The two networks are connected with eachother through leased line and the routers are configured properly. The SQL Server is on the PDC in head office and "local" clients connect fine. I cannot connect from the remote office. I think that I have folowing solutions:
1. make trust relationships between two domains - it will be hard a little bit because second PDC is samba on linux
2. make all clients in remote office to be members of the head office domain - potential problems if the leased line drops
3. make all clients to log in with same account as SQL Server logs locally - stupid
4. something else - what?
Thanks in advance!
Daniel
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Oct 24, 2005
Can anyone recommend a tool where I can email to someone both the SQLquery and the result set? Right now, I'm just copying the results to aspreadsheet. No, I can't use Reporting Services or Crystal Reports.
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Jun 2, 2007
I have a SQL Server 2005 Express database that was designed to be used by one client. What is the best way to change the design so it can contain multiple clients that can only see data entered by users of each client organization?
Also I'm using the asp.net membership database to handle login and profiles. Can this be used with my multi client database?
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Sep 24, 2005
“HELP !! We’ve lost about 25 client’s websites. The databases were backed up along with all the actual files contained within each CSK….in addition, all the original databases are intact & can be reattached to the new SQL server…..the problem that exists where the original CSK files do not recognize the original database once it is reattached to the new SQL server. Any help would be most appreciated.
This is the error……
Login failed for user 'DARRYL1ASPNET'.
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.Data.SqlClient.SqlException: Login failed for user 'DARRYL1ASPNET'.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException: Login failed for user 'DARRYL1ASPNET'.]
System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) +472
System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction) +372
System.Data.SqlClient.SqlConnection.Open() +384
System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) +44
System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +304
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +77
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) +38
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunitiesFromDB() +93
ASPNET.StarterKit.Communities.CommunityUtility.GetAllCommunities() +58
ASPNET.StarterKit.Communities.CommunityUtility.GetCommunityInfo() +327
ASPNET.StarterKit.Communities.CommunitiesModule.Application_BeginRequest(Object source, EventArgs e) +221
System.Web.SyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +60
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +87
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Jul 20, 2002
We’re having trouble getting error messages to show up on clients. Our ADO research indicates that the Errors collections is populated, “automatically” – what you do with it is up to the application. Our collection is not being populated. MS says the SQLOLEDB provider has a problem (the collection is not filled) if SET NOCOUNT is OFF. We have SET NOCOUNT ON and still have the problem. We have narrowed the problem down (the example below is an abbreviated version) to “the Errors Collection is not populated if the Raiserror follows a SELECT statement that returns a recordset”.
In the code below the simple select run after the first RAISERROR appears to “block” the Error Collection. Is this by design? Are you never supposed to be able to return records and messages from the same program? We can code around it if we have to, but the documentation seems to indicate our approach is viable.
Any ideas would be most appreciated.
SQL Stored Procedure:
CREATE PROCEDURE Address_Ck
(
@Address_ID INTEGER OUTPUT
, @MailOnly_LG BIT
, @Ctry_ID SMALLINT
, @StPv_ID SMALLINT
, @PostCode_ID INT
, @PostCode_Ext_CH CHAR(10)
, @Add1_VC VARCHAR(60)
, @Add2_VC VARCHAR(60)
, @Add3_VC VARCHAR(60)
, @Add4_VC VARCHAR(60)
, @City_VC VARCHAR(30)
, @City_Lock_LG BIT
, @Directions_VC VARCHAR(2000)
)
AS
DECLARE
@Finder_VC VARCHAR(20)
, @Label1_VC VARCHAR(60)
, @Label2_VC VARCHAR(60)
, @Label3_VC VARCHAR(60)
, @Label4_VC VARCHAR(60)
, @Label5_VC VARCHAR(60)
, @Label6_VC VARCHAR(60)
-- the error in the next line shows up when not commented out
--RAISERROR ( ‘ This error always shows up.’ ,16,1)
SELECT Address_ID
, Label1_VC
, Label2_VC
, Label3_VC
, Label4_VC
, Label5_VC
, Label6_VC
FROM Address_T
WHERE Finder_VC= @Finder_VC
RAISERROR ( ‘ Why won’t this error showup?. ’ ,16,1)
-- the error above never shows up
************************************************** ****
************************************************** ****
THE VB CODE:
Option Explicit
Dim db As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rs As New ADODB.Recordset
Private Sub Command1_Click()
On Error GoTo errmsg
Set rs = New ADODB.Recordset
Set cmd = New ADODB.Command
With db
.Provider = "SQLOLEDB"
.ConnectionString = "Data Source=Jeanne;trusted_connection = true;integrated security=sspi"
.Open
.DefaultDatabase = "DevTime21"
End With
With cmd
.ActiveConnection = db
.CommandType = adCmdStoredProc
.CommandText = "address_findck_okinsert_m"
.Parameters.Append .CreateParameter("@address_id", _
adInteger, adParamOutput, 4)
.Parameters.Append .CreateParameter("@Mailonly_lg", _
adBoolean, adParamInput, 1, False)
.Parameters.Append .CreateParameter("@ctry_id", _
adInteger, adParamInput, 4, 1)
.Parameters.Append .CreateParameter("@stpv_id", _
adInteger, adParamInput, 4, 1)
.Parameters.Append .CreateParameter("@postid_id", _
adInteger, adParamInput, 4, 0)
.Parameters.Append .CreateParameter("@postcode_ext", _
adChar, adParamInput, 10, "")
.Parameters.Append .CreateParameter("@add1_vc", _
adVarChar, adParamInput, 60, "")
.Parameters.Append .CreateParameter("@add2_vc", _
adVarChar, adParamInput, 60, "")
.Parameters.Append .CreateParameter("@add3_vc", _
adVarChar, adParamInput, 60, "")
.Parameters.Append .CreateParameter("@add4_vc", _
adVarChar, adParamInput, 60, "")
.Parameters.Append .CreateParameter("@city_vc", _
adVarChar, adParamInput, 30, "")
.Parameters.Append .CreateParameter("@city_lock_lg", _
adBoolean, adParamInput, 1, False)
.Parameters.Append .CreateParameter("@directions_vc", _
adVarChar, adParamInput, 2000, "")
End With
rs.CursorLocation = adUseClient
rs.Open cmd, , adOpenStatic, adLockBatchOptimistic
If Not IsNull(cmd("@address_id")) Then
Else
MsgBox "Please contact System Administrator. There was a problem adding address."
End If
Exit Sub
errmsg:
Call errormsginfo
End Sub
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Jun 8, 2007
I am someting of a newbie to SQL Server, but I am an experienced C++/C# programmer.
I have a SQL Server 2005 DB to which are connected 50 or so clients.
The clients are running my software, written in C# and connected to the server by an OleDBConnection.
These connections are long-lived; in some cases they remain for days or more.
Now and again, one of the clients causes a change to the DB (not structural, just normal adds, update and deletes).
But most of the time the clients are just viewing data in the DB.
What I need to happen is that when any item of information changes, the display of that information on any of the clients which are viewing it must be updated quickly.
It doesn't have to be instant, but a delay or more than, say, 5 seconds is unacceptable.
It is like a share-dealing or foreign exchange system (although that is not what it is) where the traders' screens have to have up-to-date information at all times.
Note that the information received by the clients does not have to describe the change in detail, just a hint to the client as to what change has happened so that the client can refresh its views.
I can think of a way of doing this but it is really nasty.
The hints would be recorded in a time-stamped table. Each client would poll every couple of seconds by calling a SP, which would return the hints which have been added since the last time that client polled.
But polling is horrible and I am sure that there must be a better way.
A route that looks promising is InfoMessages. But, reading around the subject, it looks like these cannot be unsolicited and spontaneous; they only arrive on a Connection as a result of some action on that Connection.
I may have missed something, or maybe InfoMessages are not the way to go.
Can anyone offer me any advice, please
TIA,
Paul
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Jul 20, 2005
Hi all,I've got a question concerning synchronization of multiple database clients.Consider a database, accessed by two clients. Is it guarantted, that ifclient 1 succefully commits a transaction, client 2 _instantly_ sees thechanges made by client 1?thx and regards,StephanP.S..: For MS Jet databases I know there _is_ a delay between writing datato the database and being able to read this updated value from anotherconnection,so the question refers to "real" DBMs (esp. SQL Server) only ;)
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Jan 17, 2007
how can i communicate with other clients over SQL 2005?
I mean, i change data of database from a client, how to make othere clients do some actions acording to the data change .( let other client print some report ect.)
Thanks
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Jul 5, 2007
We have a situation where multiple-random client connections to SQL server get disconnected.
The workstations are not consistent, the time is not consistent, and the functions being run are not consistent. One thing that we can reproduce is that sometime, but not always, if a workstation runs a function that calls a specific stored procedure (SQL native client, ADO, SQL Server 2005 SP2), during the course of the parameter validation (after the .execute) SQL sends an ACK, RST followed by two RST TCP packet back to the client and disconnects the connection.
At the same time, several other connections across multiple computers are also dropped by SQL. However, some computers may have multiple connections to SQL and some, but not all of these will be dropped. Other computers will
not have their connections dropped at all.
No SQL server errors are logged. Trace flags 4029 and 3689 have been set.
We have the network packet traces and the SQL profiler output to show this.
This is not reproducable at any other site.
Any ideas on what this could be would be greatly appreciated.
--
Dana Comolli
MS ISV Partner
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Aug 6, 2007
Hi all,
I've been running SQL Server 2005 for over three months, and have got the database up to speed. Using SSMSE for an interface.
I've have been trying to get the Intranet to link to the database (ASP), but after a little research i found we needed to change the Authentication from 'Windows Authentication' to a mix of windows auth and sql login. Needing to restart the server for the changes to take effect.
After the restart things started to go pear shaped.
Before the restart we were able to run queries from different clients at the same time (4 workstations). Now we are unable to access anything on the database if a query is running on a seperate client. As in table properties, running a query. As i've said, we were able to do this perfectly fine before the restart.
We also use other programs to generate records for the database. These programs now have difficulty connecting to the database. We've gone through the wizards and as far as we are aware things should be working. We have created extra username/logins for these programs so not one computer/client/program uses the same connection login. However, they are unable to connect even after the wizard says there is no problem connecting to the server.
Is there any *restore to factory/default settings* button? We've even tried reverting to Windows Authentication to try and solve the problem, but it didn't work, we're pretty dependant on the database for day to day operations.
Anyone with an idea as to what's wrong?
Thanks in advance
Gary.
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Dec 1, 1999
Hi all,
I have a couple of client programs continuously dumping data into a SQL 7.0 database. I use ODBC connections that remain open as long as the client programs are running.
The memory consumed by SQL grows until all the system memory is consumed at which point the clients freeze (SQL no longer responds). Restarting SQL Server "cures" the problem for a few hours.
I've tried limiting the amount of memory used by SQL, but this only accelerates the eventual client freeze-up. At the moment, I let SQL dynamically consume memory.
These same client programs ran fine under 6.5
Thanks for any help..
SQL 7.0/SP1
P3-500
256MB
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May 10, 2001
hi,
iam under process of upgrading sql7 to sql2000.
already i upgraded clients to sql2000. then i got problem with some of our applications to connect to sql7 server. then i replaced in clients new ntwdblib.dll with old one then it works fine. to overcome this problem shall i install MDAC2.6 on server, where sql7 is there.
Is there any problem to SQLserver7.0 with MDAC2.6 ? because i want to install MDAC2.6 on production server with sql7.0.
thanx
keerthi
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Mar 10, 2004
reading help i know that client for working with mssql remote db must have installed oledbprovider for XXX
i always use ole db provider for ODBC
, this ole db provider is installed with mssql, but what exactly must to have the clients which are not familiar with this ole bd provider, what files ?
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Apr 17, 2015
I am trying to write a query that counts how many clients were part of program at the first of each month.To make it simple, the data comes out of one table which looks like this:
Client # Program Start_date End_date
1 Fruit eater 03-27-2014 01-10-2015
2 Veggi eater 01-16-2015 null
3 Veggi eater 12-05-2013 04-16-2015
4 Fruit eater 10-01-2014 11-30-2014
Currently I have a very ugly solution that I know is not the best one:
Select
sum(convert(int,Jan_2014))as Tiers_in_Jan_2014
, sum(convert(int,Feb_2014)) as Tiers_in_Feb_2014
, sum(convert(int,Mar_2014 )) as Tiers_in_Mar_2014
, sum(convert(int,Apr_2014 ))as Tiers_in_Apr_2014
[code]....
Is there a better way to write this query?
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Dec 13, 2007
Hey guys!, is there a way to raise an exception through an insert trigger... and that exception will be able to raise on every single application connected to that database at the time? not just the app that actually triggered the insert...
Thanks in advance!
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Jul 23, 2005
I want to connect over the internet to get data from clients.What wouldbe the easiest method and the most stable methos to do it1.Use a Point to Point prtotcol from the client pc and then upload thedata to our sql server2.Export the data from the clint pc in XML format and then Enter it inour computer.3.Have all clienst ftp the data in a dirctory and then upload the xmlfiles from the directory?Thanking you in anticipation.Would love it if we could discuss anddistribute our thoughts on this.Ajay
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