Query Notification Stopped Working When Inserting Row
Mar 27, 2008
I'm using query notifications and it worked fine as long as I just edited the data that the "query points to" (one table). That is, my graphical represenation of the data (in a gridview) was updated correctly with the new data 1ms after I changed it, just like it should.
When I inserted a new row to the table the query notification stopped working, meaning my gridview wasn't updated. Any idea of why? Also, after this, not even editing of the data made the query notification trigger so it must have totally stopped.
Thanks in advance
ripern
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Jan 28, 2008
The following query has been working for months and the other day it just stopped. I get no error, it just never finishes. It used to take 20 minutes. Nothing has changed that I know of.
The query is designed to insert the new records from the t_DTM_DATA_STAGING into t_DTM_DATA_STAGING2 using the t_DTM_DATA_1 as the outer join.
Average record count for t_DTM_DATA_STAGING is 2 Million
Current record count in t_DTM_DATA_1 - 267 Million
Both tables have clustered indexes made up of the 10 fields in the join below.
Any Ideas??
SET QUOTED_IDENTIFIER ON
INSERT INTO
[DTM].[dbo].[t_DTM_DATA_STAGING2]
([CP]
,
,[MAJ]
,[MINR]
,[LOCN]
,[DPT]
,[YEAR]
,[PD]
,[WK]
,[TRDT]
,[SYSTEM]
,[AMOUNT]
,[DESCRIPTION]
,[GROUP]
,[VENDOR]
,[INVOICE]
,[IDAT]
,[PO_NUMBER]
,[DDAT]
,[RCV#]
,[RDAT]
,[RSP]
,[EXPLANATION]
,[UPLOAD_DATE]
,[UPLOAD_USER]
,[UPLOAD_NAME]
,[RELEASE_DATE]
,[RELEASE_USER]
,[RELEASE_NAME]
,[TRTM])
SELECT
t_DTM_DATA_STAGING.CP,
t_DTM_DATA_STAGING.CO,
t_DTM_DATA_STAGING.MAJ,
t_DTM_DATA_STAGING.MINR,
t_DTM_DATA_STAGING.LOCN,
t_DTM_DATA_STAGING.DPT,
t_DTM_DATA_STAGING.YEAR,
t_DTM_DATA_STAGING.PD,
t_DTM_DATA_STAGING.WK,
t_DTM_DATA_STAGING.TRDT,
t_DTM_DATA_STAGING.SYSTEM,
t_DTM_DATA_STAGING.AMOUNT,
t_DTM_DATA_STAGING.DESCRIPTION,
t_DTM_DATA_STAGING.[GROUP],
t_DTM_DATA_STAGING.VENDOR,
t_DTM_DATA_STAGING.INVOICE,
t_DTM_DATA_STAGING.IDAT,
t_DTM_DATA_STAGING.PO_NUMBER,
t_DTM_DATA_STAGING.DDAT,
t_DTM_DATA_STAGING.RCV#,
t_DTM_DATA_STAGING.RDAT,
t_DTM_DATA_STAGING.RSP,
t_DTM_DATA_STAGING.EXPLANATION, t_DTM_DATA_STAGING.UPLOAD_DATE, t_DTM_DATA_STAGING.UPLOAD_USER, t_DTM_DATA_STAGING.UPLOAD_NAME,
t_DTM_DATA_STAGING.RELEASE_DATE, t_DTM_DATA_STAGING.RELEASE_USER, t_DTM_DATA_STAGING.RELEASE_NAME,
t_DTM_DATA_STAGING.TRTM
FROM
t_DTM_DATA_STAGING
LEFT OUTER JOIN
t_DTM_DATA AS t_DTM_DATA_1
ON
t_DTM_DATA_STAGING.TRTM = t_DTM_DATA_1.TRTM
AND
t_DTM_DATA_STAGING.TRDT = t_DTM_DATA_1.TRDT
AND
t_DTM_DATA_STAGING.PD = t_DTM_DATA_1.PD
AND
t_DTM_DATA_STAGING.YEAR = t_DTM_DATA_1.YEAR
AND
t_DTM_DATA_STAGING.DPT = t_DTM_DATA_1.DPT
AND
t_DTM_DATA_STAGING.LOCN = t_DTM_DATA_1.LOCN
AND
t_DTM_DATA_STAGING.MINR = t_DTM_DATA_1.MINR
AND
t_DTM_DATA_STAGING.MAJ = t_DTM_DATA_1.MAJ
AND
t_DTM_DATA_STAGING.CO = t_DTM_DATA_1.CO
AND
t_DTM_DATA_STAGING.CP = t_DTM_DATA_1.CP
WHERE
(t_DTM_DATA_1.CP IS NULL)
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Dec 29, 2006
Hi All
We built a Cache component that take advantage of the SQL Server 2005 query notification mechanism, all went well , we tested the component in a console application , and notifications kept coming for as long time as the console application ran.
When we initiate our Cache Component in our web service global.asx application start event , the query notification works for a few minutes , but if we came after 10 minutes or so , we stoped getting notifications from sql, the SQL Server queue is empty , and all is showing that there is nothing wrong on the DB side...
Our Cache component is a Singleton class , that perform all registrations ,catch the notification events and resubscribe for notifications.
What can be the problem? is our Cache component object are being collected by GC?
Does IIS disposes the SQL Connection that the Query notification uses?
We are on a crisis...
Thanks in advance.
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Jan 11, 2001
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Loren
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Aug 21, 2007
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Thanks
Andy
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Hi,
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Thanks
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Is there any way to tell why it may have failed?
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TIA
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Hi,
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This is the line causing the problem (if I take it out, the rest of the SP works no problems):
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SQLState = 37000, NativeError = 8180
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NULL
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Thanks
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Apr 29, 2008
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Thanks - SM
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Mar 28, 2006
Hello...
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thanks for any help!
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Mar 17, 2004
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Jan 19, 2008
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Thought this might help others..
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Sep 20, 2006
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Aug 8, 2005
Hello,I'm following the tutorial for setting up notification services, available here: ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/sqltut9/html/44aa0556-b9c2-48f5-8775-134bbe0b90aa.htm. Where it says:Update the Instance of Notification Services
After you modify the ADF, you update the instance of Notification Services to add event class objects to the application database:
In Object Explorer, expand Notification Services.
Right-click Tutorial, point to Tasks, and then select Update.
In the Update Instance dialog, click Browse, browse to the TutorialICF.xml file, and then click Open.
In the Parameters grid, enter values for the _ServerName_, _DBEngineInstance_, and _InstancePath_ parameters. Use the same values you used to create the instance.
Click OK.
Review the Notification Services - Update Summary dialog box, and then click Update.
When the update actions complete, click Close.
I'm getting the error: The instance must be disabled before it can be updated or upgraded. How do I do that?Thanks.
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Jan 11, 2007
Hi Guys,
I have a package that inserts data from a sql server table to an oracle table. I use a dataflow task to do the loading.
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Thanks,
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Oct 30, 2007
hi,
When SQL server notifies the application that the records in a table has changed, is there a way to know which record has changed from the application?
Let me give an eg.
Consider that we have a table customer. We have registered for a notfication for 2 customers, say Cust id 1 and Cust id 2. Now , when records for these two customers changes we get a notification. Is there a way in .Net by whihc we can get whihc customer has been modified?
Thanks
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Jul 17, 2007
I've got an application that's using query notifications with a two-user setup (a user that starts the dependency running, and an application user that subscribes to it). I'm having problems getting the query notifications to go through however... according to the Profiler, when the application user does something that triggers a query notification, it causes this error:
This message could not be delivered because the user with ID [application user] in database ID [database] does not have permission to send to the service. Service name: SqlQueryNotificationService-[guid].
The problem is that [guid] is different each time, and there doesn't seem to be a generic "grant send on all services" statement, so I can't grant send on the particular service in question to the application user to get rid of the error. (If I grant db_owner to the application user, the problem goes away and everything works, but I'd rather not do that. The application user already has subscribe query notifications, receive on QueryNotificationErrorsQueue, and references on contract::...PostQueryNotification.)
Obviously I'm doing something wrong, but I am completely out of ideas and can't seem to find anything new to try. Any ideas? Thanks.
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Oct 26, 2007
After having problems with SqlDependency logging an infinite number of errors I've rewritten my code to use SqlNotificationRequest instead. Now I have a different kind of cleanup problem and am looking for help.
My code registers to be notified when table data is changed. When the event triggers, it re-registers. It works fine. The problem comes when my subscribing program ends: it orphans the last subscription. When the program re-starts it subscribes as before, but now there are now two subscriptions (or three, or however many times my program is shut down). As an Admin I can run KILL QUERY NOTIFICATION SUBSCRIPTION ALL; I can even hard code this into my app as it is the only one (for now) using this instance of SS. But there must be a better way.
When I subscribe (.NET) how do I get the subscription id? Then I could just KILL that single id when my code shuts down. Specifically what code should I include in StopListener()? Thank you.
public void StartListener()
{
// starts a new thread whose sole purpose is to sleep until waked
Debug.WriteLine( "RequestNotification: StartListener" );
if( null == _listener )
{
_listener = new Thread( Listen );
_listener.Name = _threadName;
_listener.IsBackground = true; // essential!
_listener.Start();
}
}
public void StopListener()
{
Debug.WriteLine( "RequestNotification: StopListener" );
// not necessary, but good practice
_listener.Abort();
_listener = null;
Debug.WriteLine( "RequestNotification: Listener aborted..." );
}
private void Listen()
{
// infinite loop on this thread: keep listening even after
// receiving notification
while( true )
{
// connects to SqlServer queue and sleeps until a notification msg arrives
using( SqlConnection conn = new SqlConnection( _connect ) )
{
conn.Open();
Debug.WriteLine( "RequestNotification: Listen connection opened..." );
using( SqlCommand cmd = conn.CreateCommand() )
{
cmd.CommandText = "WAITFOR ( RECEIVE * FROM " + _queue + ");";
cmd.CommandTimeout = 0; // _notificationTimeout + 100;
try
{
// the thread is blocked until the waitfor event occurs.
SqlDataReader reader = cmd.ExecuteReader();
// the waitfor has triggered
while( reader.Read() )
{
// messageText = System.Text.ASCIIEncoding.ASCII.GetString( (byte[]) reader.GetValue( 13 ) ).ToString();
}
// and now we need to hand things back to the user's passed
// delegate, ensure we're back on the UI thread as well
//object[] args = { this, EventArgs.Empty };
Debug.WriteLine( "RequestNotification: Notification received." );
SqlNotificationEventArgs e = new SqlNotificationEventArgs( SqlNotificationType.Change, SqlNotificationInfo.AlreadyChanged, SqlNotificationSource.Database );
_delegate( this, e );
}
catch( SqlException )
{
// if the queue name doesn't match one in the db an exception will be thrown
throw;
}
}
}
}
}
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May 6, 2007
Hi All
In Work , we created a Cache component that serves a large business application, we are subscribing to almost 200 queries , the component worked quite well in the first few months of the development, but lately i am getting notification events that contain "Error" in the SqlNotificationEventArgs of the event , the "Source" value is "Client".
I have no idea what might cause this error event , we are close to "go live" with our product and we cannot depend on the Query Notification mechanism until this problem is solved.
Can it be a DataBase problem? Application Problem?
Thanks in advance
Eden
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Jan 22, 2007
Hello all,
We have encountered a weird problem; we have an application that registers to several queries for notification.
For several weeks everything worked fine, any change to any query result in the database triggered the notification event, but since yesterday the mystery began€¦ since yesterday not all changes triggers events , changing one table raise the notification event, changing the other doesn€™t , all seems fine in the database , the application reports that all queries were registered successfully , in the subscription view in the database we can see that all the queries that the application subscribed to are present€¦
What can be the problem? Is it something in the database? Can it be a problem in our application, please keep in mind that everything worked until yesterday€¦
Thanks,
Eden
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Jul 17, 2007
Hi all,
I am looking at replacing a polled system with Query Notification. However when I create the SqlDependency I need to be sure I have the correct permissions. I check the SqlClientPermissions via the Demand() method, but also want to ensure I have the correct DB permission given my current connection string. As I understand it I need to have the following permissions:
CREATE PROCEDURE, QUEUE, and SERVICE permissions
SUBSCRIBE QUERY NOTIFICATIONS
SELECT on underlying tables
RECEIVE on QueryNotificationErrorsQueue
I check most of these via the 'has_perms_by_name' function, but cannot find the correct syntax to check for RECEIVE on QueryNotificationErrorsQueue. I would also love to find a way to do this via SMO instead of issuing SQl commands. Also am I missing any checks ....
Finally, I have also run into the problem whereby SQL issues the following error:
The activated proc [dbo].[SqlQueryNotificationStoredProcedure-1fd90369-7781-4bad-a1b7-e1b56e328374] running on queue ImlHostDB.dbo.SqlQueryNotificationService-1fd90369-7781-4bad-a1b7-e1b56e328374 output the following: 'Could not obtain information about Windows NT group/user 'EMEADyerN', error code 0x54b.'
I ran into this issue when I bought my machine out of sleep mode with it no longer connected to the network. Is their no way to get a error notification. In this situation I will just stop seeing notification and without looing at the ErrorLog believe their is nothing wrong.
Many Thanks, Nick
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Jul 16, 2007
Hi Guys,
I'm having some problems setting up a SQL Server 2005 Query Notification application. I've only recently moved from SQL Server 2000 so 2005 is still a little alien to me!
I've followed example found on the internet in the following steps:
1.
ALTER DATABASE <dbname> SET ENABLE_BROKER
2.
GRANT CREATE PROCEDURE TO <user>
GRANT CREATE QUEUE TO <user>
GRANT CREATE SERVICE TO <user>
GRANT SUBSCRIBE QUERY NOTIFICATIONS TO <user>
GRANT RECEIVE ON QueryNotificationErrorsQueue TO <user>
3.
ALTER DATABASE <dbname> SET TRUSTWORTHY ON
The application developers have also followed the same example setting up SQL cache and the connection code. When they start the application I can see the connection in the activity monitor but it has a status of SUSPENDED. I've also checked the view:
SELECT * FROM sys.dm_qn_subscriptions
There are no subscriptions setup I can however see that there is a new SP created. I tried to creating master keys as well but I'm not sure what the reasoning behind this is.
Is there anything else I need to take into consideration or check? When I change the data which they use for their select statement SQL profiler doesn't register anything (except the update). I have however seen this:
exec sp_executesql N'END CONVERSATION @p1; BEGIN CONVERSATION TIMER (''69e2c786-9d33-dc11-a751-0050568146e8'') TIMEOUT = 120; WAITFOR(RECEIVE TOP (1) message_type_name,
conversation_handle, cast(message_body AS XML) as message_body from [SqlQueryNotificationService-5fb25d04-6ef6-47e6-9406-854f15e16eb7]), TIMEOUT @p2;',N'@p2 int,@p1
uniqueidentifier',@p2=60000,@p1='BD98F6B4-A133-DC11-A751-0050568146E8'
This occurs when they refresh the page.
Any ideas?
Cheers!
Ian
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Jun 9, 2006
I have been testing SQLDependency and I have a two questions;
1) When using a stored procedure to run the dependency query, using a "clean" procedure (containing nothing but a select statement), works fine. Adding try..catch (which is a part of our coding standards), results in the subscription firing immediately because of an invalid query. Is this by design? If so, how can I implement error handling.
2) How does SQLDependency handle SQL Server restarts?
I see two options:
a) The subscription is fired listing a server restart message in the related service broker queue, but as far as I can tell, SQLDependency has no way of handling these messages given the connection has been broken. (Establishing a new connection and dependency won€™t read the said messages).
b) The SQLDependency listener on the client raises an error for the connection being terminated. Can I relay on this event to recreate a connection and dependency?
Help will be appriciated
Boaz
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Feb 11, 2007
Dear,
I have designed a SiteMap provider for SQL Server. But I am worried about the notification service of SQL Server. My SiteMap requires service broker enabled in SQL Server. When I have web farm (multiple clustered server) does the Sql Server service broker notify all the web servers? Or, it notifies only the server request?
Have anubody implement such scenario? Looking forward for your reply.
Sincere Regards,Sultan
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Oct 11, 2007
Two days ago I discovered that the drive on our test SqlServer2005 was full. The current Error_log had 54+ Gb (yes Gb) of records. Not only did I delete the file I restarted SS and the server.
That afternoon, I discovered that the current log had 33,678 records! I believe 33,616 of the records came from a single run of my app and set of program events. Obviously I'm doing something wrong in my Query Notification implementation and testing. And yet, when I try to to deliberately trigger the phenomenon, I can not.
Here is the head of the exported log file; the two msgs (query dialog closed and cannot drop queue) alternate thousands and thousands of times form a single test run. What is going on?! Pls help!
Date,Source,Severity,Message
10/11/2007 11:42:52,spid5s,Unknown,SQL Trace was stopped due to server shutdown. Trace ID = '1'. This is an informational message only; no user action is required.
10/11/2007 11:42:52,spid5s,Unknown,SQL Server is terminating in response to a 'stop' request from Service Control Manager. This is an informational message only. No user action is required.
10/11/2007 11:42:49,spid14s,Unknown,Service Broker manager has shut down.
10/11/2007 11:42:47,spid51,Unknown,Configuration option 'show advanced options' changed from 1 to 0. Run the RECONFIGURE statement to install.
10/11/2007 11:42:47,spid51,Unknown,Configuration option 'Agent XPs' changed from 1 to 0. Run the RECONFIGURE statement to install.
10/11/2007 11:42:47,spid51,Unknown,Configuration option 'show advanced options' changed from 0 to 1. Run the RECONFIGURE statement to install.
10/11/2007 11:42:04,spid51,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid54s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid54s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid52s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid52s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid52s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid52s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid54s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid54s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid52s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid52s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid54s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
10/11/2007 11:42:03,spid54s,Unknown,The query notification dialog on conversation handle '{72FF98A6-1478-DC11-B117-003048772A14}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8470</Code><Description>Remote service has been dropped.</Description></Error>'.
10/11/2007 11:42:03,spid52s,Unknown,The activated proc [ovs].[SqlQueryNotificationStoredProcedure-ed59bba2-19b1-42a3-9aaa-f8a76b844561] running on queue OVS_GOM_Protected.ovs.SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561 output the following: 'Cannot drop the queue 'SqlQueryNotificationService-ed59bba2-19b1-42a3-9aaa-f8a76b844561'<c/> because it does not exist or you do not have permission.'
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Feb 8, 2007
We are in development stage of an application which uses Query Notification feature of SQL Server 2005. When the development started what the development team did was, they just Enabled broker on the database by SET ENABLE_Broker statement and they started using Query Notification. Now the application is in testing phase and when we test with many user, the performance is really slow. What i want to know is , when we use Query Notification what all are the setting to be done at the database level. Is this setting enough. And also how can i tune this system. any useful link is appreciated.
thanks in advance
Madhu
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Sep 13, 2006
The title says it all. You can do it from a ADO.Net client so why not from TSQL.
It all uses the service broker stuff so why not?
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Feb 7, 2008
In order to avoid a large ammount of network traffic we decided to use Query Notification to Update our Clients.
Usually we have 20 up to 200 Clients connected to the DB, and some of the data QN is pointing at, are changed frequently (about 5 times per second) .
Now i heard it is recomended to connect just 10 Clients (max) to get acceptable performance out of SQL Server.
So my questions:
Is Query Notification the rigth technique to handle this kind of Data Changes.?
Is there an other feature or technique to get updated at client-side with less performance and ressource consumtion (without polling)?
Are there improvements in SQL-Server 2008?
How should the Server be configured to handle more than 10 Clients?
Thanks in advance
Raimund
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Dec 13, 2007
I have noticed something strange on the select statement that you can use on query notification.
I have a table that contains a compute column let's call it "Calculate".
If I subscribe to query notification:
Select ID from table
the subscription fails.
The column Calculate doesn't use the column ID.
Why??
for me it shouldn't be the case
Thankx
MArina B.
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Sep 1, 2006
I tried using Query Notification on my computer at home:
* Win XP Pro with all the SPs and hotfixes
* SQL 2005 with SP1 qand hotfix
Query Notification worked fine.
Then I tried using it at work:
* Win XP Pro with all the SPs and hotfixes
* SQL 2005 with SP1 qand hotfix
and I see the following error in the SQL server log file and notification does not get to the client app:
----------------------------------------------------------
Date 9/1/2006 10:18:30 AM
Log SQL Server (Current - 9/1/2006 10:18:00 AM)
Source spid17s
Message
An
exception occurred while enqueueing a message in the target queue.
Error: 15404, State: 19. Could not obtain information about Windows NT
group/user 'domainmyuser', error code 0x6e.
----------------------------------------------------------
A similar error shows up in the machine's Event Log.
I am
sysadmin and full OS admin on both boxes. The difference is that the
computer at home is standalone while the one at work is part of a
domain.
What could be wrong?
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