Every In A While, I Get A Bunch Of 8494 Error The Query Notification..., Any Idea?
Dec 18, 2007
I found in error log of my server is full of message like this
The query notification dialog on conversation handle '{9AD14600-28AD-DC11-9B36-000D5670268E}.' closed due to the following error: '<?xml version="1.0"?><Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8494</Code><Description>You do not have permission to access the service 'SqlQueryNotificationService-174a4df0-bac8-4a51-8564-28d750d7c11a'.</Description></Error>'.
any idea what could cause that?
thanks!
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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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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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May 24, 2008
Hi all,
I'm using SQL Server 2005 along side Visual Studio 2005, using VB to create a web application at work.
Now I'd like to bunch together some child fields in a gridview when displayed. Have a look at the attached pic to show what I would like.
Is this possible via a query or would I need to set something up on the gridview to do this?
Cheers,
Paul.
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Apr 13, 2006
My database is logging frequent errors and I am unable to determine the cause. These errors appear to be related to the Service Broker. Below is the database log file after a database restart and attempted access to the database through a web application. The first error (bottom of the logfile) is error 28054. I have searched on this error code and have found nothing helpful. Any assistance or direction would be greatly appreciated.
Database Log:
04/13/2006 12:26:05,spid22s,Unknown,An error occurred in the service broker message dispatcher<c/> Error: 15517 State: 1.
04/13/2006 12:26:05,spid22s,Unknown,Error: 9644<c/> Severity: 16<c/> State: 14.
04/13/2006 12:26:04,spid57s,Unknown,The activated proc [dbo].[SqlQueryNotificationStoredProcedure-aa148e0f-2980-4a23-b9cf-b44dbfddf783] running on queue CDR.dbo.SqlQueryNotificationService-aa148e0f-2980-4a23-b9cf-b44dbfddf783 output the following: 'Cannot execute as the database principal because the principal "dbo" does not exist<c/> this type of principal cannot be impersonated<c/> or you do not have permission.'
04/13/2006 12:26:01,spid22s,Unknown,An error occurred in the service broker message dispatcher<c/> Error: 15517 State: 1.
04/13/2006 12:26:01,spid22s,Unknown,Error: 9644<c/> Severity: 16<c/> State: 14.
04/13/2006 12:26:01,spid56s,Unknown,The activated proc [dbo].[SqlQueryNotificationStoredProcedure-aa148e0f-2980-4a23-b9cf-b44dbfddf783] running on queue CDR.dbo.SqlQueryNotificationService-aa148e0f-2980-4a23-b9cf-b44dbfddf783 output the following: 'Cannot execute as the database principal because the principal "dbo" does not exist<c/> this type of principal cannot be impersonated<c/> or you do not have permission.'
04/13/2006 12:26:01,spid56s,Unknown,The activated proc [dbo].[SqlQueryNotificationStoredProcedure-aa148e0f-2980-4a23-b9cf-b44dbfddf783] running on queue CDR.dbo.SqlQueryNotificationService-aa148e0f-2980-4a23-b9cf-b44dbfddf783 output the following: 'Cannot execute as the database principal because the principal "dbo" does not exist<c/> this type of principal cannot be impersonated<c/> or you do not have permission.'
04/13/2006 12:26:01,spid56s,Unknown,The activated proc [dbo].[SqlQueryNotificationStoredProcedure-aa148e0f-2980-4a23-b9cf-b44dbfddf783] running on queue CDR.dbo.SqlQueryNotificationService-aa148e0f-2980-4a23-b9cf-b44dbfddf783 output the following: 'Cannot execute as the database principal because the principal "dbo" does not exist<c/> this type of principal cannot be impersonated<c/> or you do not have permission.'
04/13/2006 12:26:01,spid52,Unknown,Service Broker needs to access the master key in the database 'CDR'. Error code:25. The master key has to exist and the service master key encryption is required.
04/13/2006 12:26:01,spid52,Unknown,Error: 28054<c/> Severity: 11<c/> State: 1.
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Feb 19, 2008
consider the following table:
name , TaskDate
john , 01/01/2006
john , 01/03/2005
steve , 01/05/2006
i want to build a select statement that gives result like the following:
name , JanuaryTotal , FebruaryTotal
john , 150 , 110
steve , 170 , 50
so the result will be total tasks in specific month, is it doable in one select or should i turn around using hash tables ???
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Aug 3, 2004
Hi, all..
One database called POS in a server A is replicated with another server B with merge replication.
Server A is distributor and publisher.
I tried to replicate POS db it keeps giving me error following.
"SQL Server Enterprise Manager could not retrieve information about database 'POS'
Error 21776: [SQL-DMO] The name 'POS was not found in the ReplicationDatabase collection. If the name is a qualified name.
user [] to separate various parts of the name, and try again."
When other try it gives following error..
SQL Server Enterprise Manager could not enable database 'POS' for merge replication.
Error 20736: [SQL-DMO] This object has been dropped from the server.
I did all I can do..
I reinstalled sql server and tried again.. but it gives same error..
Does anyone has any idea of this problem????
Please post any idea.
Thank you...
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Jan 3, 2007
When I try to amend a stored procedure, I get Error 208: invalid object name when amending a stored procedureAny idea how I can amend the stored procedure?thanks
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Dec 18, 2006
Hello,
I'm creating a website for a student organization at my university. Basically, I have an Excel file with a list of contacts that the members of our organization need to be able to search on our website.
The only field that I need our members to be able to search is "contact location." So for example, a member might want to know if our organization has any contacts in Spain, so the member would type "spain" into the "contact location search" field" and would get results.
I really don't known where to turn... I need the easiest thing that would be manageable for a novice. It doesn't need to be an intense search function; just something to make the website functional (so it obviously needs to be uploadable to a server; the server has PHP capability...no idea if that has any relevance). I've been searching around all day and have come across potentials like PHP, SQL, XML, etc. but have no idea which way to turn... I have Office and Adobe Studio programs at my disposal.
Thank you all-powerful and all-knowing web gods! I owe you my deepest gratitude!
Mikey
:beer:
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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
Man.
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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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Nov 7, 2007
Hi,
How can I set up my data-driven subscription reports so I get notified when an execution or delivery error occurs?
Regards,
Greg McNamara
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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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Mar 28, 2012
how do you draw an E-R diagram from a bunch of functional dependencies?
I mean, where do you start? Can I just pick, say, E to be the starting point and have branches coming out to all the other attributes?
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Aug 27, 2007
Hi All,
Not sure if this is exactly the place to post this, but here it goes anyways.
I am writing a ASP.Net/C# program and I am interacting with a MS Access database in order to derive data on user login and logout times. Basically, I am trying to create a line graph that will display the number of users over the course of a user specified timespan. Currently, I am doing this by look at the number of users that were logged on during each minute of the timespan.
My database table setup consists of a EmployeeID column (Text), Logon Date (Date/Time), and Logoff Date (Date/Time). I have also created an index on the Logon Date and Logoff Date columns.
In order to view the number of users during a minute of the timespan I use a Jet SQL query of the following format
Code Snippet
SELECT DISTINCT Count (EmployeeID) AS [User Count]
FROM ProgramName
WHERE ([Logon Date] < #August 27, 2007 11:45:00# OR [Logon Date] Is Null) AND ([Logoff Date] > #August 27, 2007 11:45:00# OR [Logoff Date] Is Null)
The problem is that using this method I have to execute 1,440 queries for each day in the timespan. Currently this takes about 25 seconds to execute if the timespan is a full workweek (7,200 queries).
Now the question. Is it possible to create a SELECT statement that will return user counts for multiple minutes? Like maybe a SELECT statement that returns a column of counts for every minute in an hour? If it is possible, does anyone have any examples? I am hoping by lowering the number of queries my program has to execute I will also cut down the time required for the code to run.
I am pretty new to SQL, so any guidance or advice is very appreciated.
Thanks!
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May 4, 2007
I have created a package which forms data from flat file to sql database.I have a data flow where all my data is processed to destination.if the package fails by any chance i want an email notification with the cause of the error.how can i do this.please let me know..
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May 21, 2006
Hi
I have a simple question regarding event notification in sql 2005. I keep up getting a message indicating a syntax error when trying to execute the following script. I also tried with [ instead of '.
CREATE EVENT NOTIFICATION NotifyCT
ON DATABASE
FOR CREATE_TABLE
TO SERVICE 'NotifyService'
Msg 102, Level 15, State 1, Line 4
Incorrect syntax near 'NotifyService'.
I cannot find any error in my syntax. Please help
Thanks
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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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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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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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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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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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Mar 10, 2015
See pic
Syntax on using BCP.
Here is my Requirements: I have a file that has a bunch of INSERT STATEMENTS. So the stuff inside the file looks like the following:
File has about 5000 rows.
INSERT INTO abc ( name ) VALUES ( 'Peter' );
INSERT INTO abc ( name ) VALUES ( 'Bob' );
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Nov 23, 2005
Currently I'm using a UDF and a physical temp table to accomplish thisand I want to know if there's any way of doing it in a query orsubquery instead...In TableA there are a bunch of rows:InvitationID (PK) PartyID Partygoer1 1 Jim2 20 Bob3 2 Frank4 1 Robert5 1 PeteIn TableB are rows:PartyID (PK) PartyDate PartyName1 1/1/2000 WildParty2 1/1/2000 BoringPartyWhen a user runs a query to search for all parties on 1/1/2000 I wantthe result to look like:PartyID PartyDate PartyName Partygoer1 1/1/2000 WildParty Jim, Robert, Pete2 1/1/2000 BoringParty FrankI'm hoping there's a solution to this.Thanks,lq
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Jul 23, 2005
Is there any reason why I shouldn't cause an arithmetic error(say bydividing by zero) in a User Defined Function for a situation where in astored procedure you would use RAISERROR or in code you would throw anexception?In most situations, I can check the return value of the UDF to see thatit is valid. However, I want to sum the output of UDF and thereforecannot check the return value. Errors should be so rare that I wouldrather not use a cursor to do the sum--and take the peformance hit.Following is the code:SELECT SUM([dbo].[udf_MyFunction]([Column1],[Column2]))FROM tblMyTableThanks ~ Matt
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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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Jul 17, 2007
Hi all,
I am investigating using Query Notifications - a great addition BTW. I have built a test app - loosely based on MSDN example - and am running against a SQL Express 2005 server. I have the following problem:
I have start/stop buttons to enable change checking, and a hardcode query that I am using for testing. If I stop and restart I now recieve duplicate notifcations, a single change causing the OnChange event to fires twice with two different ids Repeat this and the event will fires 3 times for each change and so on.
This only happens with a running app, if I restart the app I only get a single notification so I assume I have missed a step in stopping query notifcations or reinitialisation. I have include code below:
private bool Start()
{
try
{
// Remove any existing dependency connection, then create a new one.
SqlDependency.Stop(_currentConnectionString);
if (SqlDependency.Start(_currentConnectionString))
{
if (connection == null)
{
connection = new SqlConnection(_currentConnectionString);
}
if (command == null)
{
command = new SqlCommand(_sqlQueryString, connection);
}
return (true);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return false;
}
private void Stop()
{
SqlDependency.Stop(_currentConnectionString);
if (command != null)
{
command.Notification = null;
command = null;
}
if (connection != null)
{
connection.Close();
connection = null;
}
}
private void GetDataSnapshot()
{
// Empty the dataset so that there is only
// one batch of data displayed.
dataToWatch.Clear();
// Make sure the command object does not already have
// a notification object associated with it.
command.Notification = null;
// Create and bind the SqlDependency object
// to the command object.
SqlDependency dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
using (SqlDataAdapter adapter = new SqlDataAdapter(command))
{
adapter.Fill(dataToWatch, tableName);
}
}
private void dependency_OnChange(object sender, SqlNotificationEventArgs e)
{
// This event will occur on a thread pool thread.
// Updating the UI from a worker thread is not permitted.
// The following code checks to see if it is safe to
// update the UI.
ISynchronizeInvoke i = (ISynchronizeInvoke)this;
// If InvokeRequired returns True, the code
// is executing on a worker thread.
if (i.InvokeRequired)
{
// Create a delegate to perform the thread switch.
OnChangeEventHandler tempDelegate = new OnChangeEventHandler(dependency_OnChange);
object[] args = { sender, e };
// Marshal the data from the worker thread
// to the UI thread.
i.BeginInvoke(tempDelegate, args);
return;
}
// Remove the handler, since it is only good
// for a single notification.
SqlDependency dependency = (SqlDependency)sender;
dependency.OnChange -= dependency_OnChange;
// At this point, the code is executing on the
// UI thread, so it is safe to update the UI.
++changeCount;
lblStatus.Text = String.Format(statusMessage, changeCount);
// Add information from the event arguments to the list box
// for debugging purposes only.
//lbChanges.Items.Clear();
lbChanges.Items.Add("+++++++++++++++++");
lbChanges.Items.Add("Id: " + dependency.Id);
lbChanges.Items.Add("Info: " + e.Info.ToString());
lbChanges.Items.Add("Source: " + e.Source.ToString());
lbChanges.Items.Add("Type: " + e.Type.ToString());
// Reload the dataset that is bound to the grid.
if (e.Info != SqlNotificationInfo.Error)
this.GetDataSnapshot();
}
Thanks, Nick
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