I have an activated SP that is issuing PRINT statements.
These are raised as ErrorLog and EventLog events when using SQLProfiler
However if you attach an event notification for ERRORLOG and EVENTLOG, nothing appears in the queue. Any other ERRORLOG or EVENTLOG event caught by profiler is caught by the event notification as expected.
Hi.
I'm developing an app that uses Service Broker queues to allow a customer to create "events" that fire using a timer or a query notification. When these events fire, a message is sent to a Service Broker queue for processing. Because there is much managed code involved in processing these messages, I decided to use the External Activator application and an Event Notification to process these messages. My question is "what is the difference between using the External Activator application to launch another application (which simply RECEIVEs a message from the target queue and processes it) and creating a windows service that simply monitors the target queue (with a WAITFOR = -1 clause) and processes it?"
I guess I'm not sure how using the QUEUE_ACTIVATION Event Notification is really helping me.
Thanks,
Chris
Hi
In the page load of my webpage I call a databind for a gridview.
It generally calls this event handler :
protected void SqlDataSource1_Selected(object sender, SqlDataSourceStatusEventArgs e)
However sometimes (seemingly randomly) it doesn't.
Any ideas?
Thanks
p
protected void Page_Load(object sender, EventArgs e)
{
...
if (searchText != "")
SqlDataSource1.SelectParameters["search"].DefaultValue = searchText;
else{
SqlDataSource1.SelectParameters["search"].DefaultValue = "";
GridView1.DataBind();
}
This trigger fired once ONLY during an insert event. My web form inserted 4 news records so it should fire the trigger 4 times correct?
CREATE TRIGGER trInsertImplementationTaskP1
on dbo.ImplementationTasks
FOR INSERT
AS
DECLARE @ITIDint
SELECT @ITID = (SELECT ITid
from inserted)
EXEC TrigSendNewIMAlertP1 @ITID
I have a package which have two sequence container, first container is used to transfer data to a staging area and second sequence container is used to transfer to destination from that staging area. And I also apply transaction required to second sequence container.
There are several execute sql tasks and several data flow tasks inside two sequence container.
first sequence container( 1.execution sql task-> 2.data flow ->3.execution sql task) ->
second sequence container(4.execution sql task-> 5.execution sql task-> 6.data flow-> 7.data flow -> 8.execution sql task-> 9.data flow...)
I create ExecutionLog table which is used to log status for this package on our sql server. First this status field is null, then during this package run , it change to 'in process', and after this package finished, it change to 'success' or 'failure' depending this package can run successfully or not.
This package can be run only if status is 'success' ,'failure' or null. So I need to change this status field during package execution.
For updating package to failure, I need to add event handler to change that status using execute sql task.
First time I perform to execute sql task on onError event handler tab (this event handler is applyed on package level ) .
And for testing envent handler I use old schema version to make sure I get failure for '8 execution sql task'.
But package seems to get stuck at '8 execution sql task' inside second sequence container( always yellow when I run from ssis) and never fire envent handler. '8 execution sql task' is used to update related table.
Second time I remove onError envent handler and change to use on onTaskFailed event handler tab (this event handler is applyed on package level ) .
But everything is the same as using onError event handler except I got error output but still can not fire event.
Why '8.execution sql task' can not fire onError or onTaskFailed?
For this case what kind of event handler I need to use, what kind of level I need to apply for this event handler.
hi. can't seem to find the event notifications in the service broker folder of Management Studio.. I can get the information from sys.event_notifications, but it seems odd that event notifications are not in the UI. Hopefully I'm looking in the wrong place?
View 1 Replies View RelatedI created a Blocking Event Notification following this article ->[URL=
How do I throttle the alerts so that I only receive one alert per hour instead of 1000?
I'm looking for a sanity check. Service broker and Event Notifications are new to me, so it is possible I'm either abusing or incorrectly using the technology. I'm experimenting with using Event Notifications and Server Broker to log error messages. The process works pretty well as long as I don't do something stupid such as stressing the process by calling raiserror in a loop of a 100000 - twice. It processed for a while, but eventual either SQL Server terminates (sev 25) or I had to force the SQL service to stop by killing it's process via task manager. I could not connect to SQL Server or stop the service normally.
I have several general questions. I think they are good questions. Any thoughts or suggestions would be appreciated.
1) I'm looking into generating deadlock and blocking email alerts. It appears that Event Notification is the way to go since there are very few events and I can respond to the event with an email. Is there a better method to automate blocking and deadlock email alerts that include event details?
2) If I wanted to retain some history of errors for the developers, should Event Notifications be avoided if a high number of errors can be generated by a badly formed T-SQL? Avoid TRC_ERRORS_AND_WARNINGS and USER_ERROR_MESSAGE? (I could tell the developers not to be stupid, but why would that stop them if it does not stop me?)
3) Is there a way to efficiently filter a Event Notification from entering the queue before the Receive statement is called? I get some events that I throw away after receiving them. For example, perhaps I want all events from all non-system databases without having to add a notification for each single non-system database. Or I want all errors with severity 11-17 only?
4) Is there a trick to filter out events from the procedure activated by the event. I tried using raiserror to debug a procedure without thinking. The result was that the queue never was empty because the processing produced more events to process. As a result, I don't use raiserror and use a try-catch to avoid raising errors in the procedure activated.
5) I can receive one message at a time using local variables or receive a batch of messages using a local table. Is a small batch the best way even if there is memory pressure?
6) In the activated procedure I continue processing in a loop until there are no more messages. This seems to be the most efficient. Is this always the case? Should I exit the procedure after a set number (large) of messages have been received? The procedure would activate again to continue processing?
7) Is there any point to using the MAX_QUEUE_READERS setting when processing event notifications? Should it be 1?
8) I currently get the next conversation group id and process its messages within a transaction. Is this a bad idea with event notifications? Should I just call Receive and get the next batch? I don't really care if I lose some messages if things are going badly. Should I avoid wrapping the receive in a transaction?
9) I could run a trace that starts with SQL Server; however, I think my only choice is to log to a file. Is there a way to trace to a table using SQLTrace without running profiler? I would like to automate the process and have the data in a table so that it can be easily queried and parsed for each database/team.
10) Is there a way to fix my process and handle 100000 messages a minute? Is there a way to skip messages when it gets to busy? Can the query generating the messages get throttled - perhaps along with the query designer - before the server gets into trouble? Query the memory used by a queue and drop/create the queue with a delay if there is an issue?
I'm using a single CPU test machine with only 1 GB and 2 GB pagefile and a single disk. OS: Windows 2003 R2 SP2. SQL: 9.0.3054 and on 9.0.3228 (update package 6 just came out today). I could add memory, but I think that would just permit me to queue more message before running into trouble.
I'll add code shortly - length limit.
Greetings,
We have a package that runs on 3 servers, all based in different countries and time zones. Each package does logging to a common SQL Server based in New York. (We log to the same server to make monitoring of the package run results easier.) We expect that our overseas servers will occassionally fail to make a database connection and have coded a Try/Catch block in our Script task to ignore errors that occur when attempting the SQL Server logging.
The problem is that the OnError event handler defined at the package level is being called whenever a server fails to make a database connection. The Catch block appears to not be called at all. I've included below the short method that does the SQL Server logging. The "Dts.Log" line logs to a SQL Server and usually works. However, when it fails, the "WriteEventLogEntry" method is supposed to be called to write an error to the server's event log. (I haven't included the "WriteEventLogEntry" code but it works fine when called elsewhere in the package to do our non-error event logging.)
Public Sub WriteSqlServerLogEntry(ByVal logMessage As String, ByVal dataCode As Integer, ByVal dataBytes() As Byte, ByVal rowsInserted As Integer)
Try
Dts.Log(logMessage, dataCode, dataBytes)
Catch ex As Exception
WriteEventLogEntry("An exception was thrown while attempting to log the following message to the SQL Server provider: " + logMessage, EventLogEntryType.Error, rowsInserted)
End Try
End Sub
Shouldn't a Catch block prevent the OnError event from being raised? How can I change my package to ignore all errors that occur when attempting SQL Server logging?
Gracias!
BCB
We have (running SQL 2012 Std) and have enabled trace flag 1204 and 1222 for capturing deadlock through extended events. I have enabled deadlock notification through email .But it only send deadlock event occurred notification from the sql server error log . I was wondering if its possible to email the deadlock details they get generated in extended events via DB mail.
View 1 Replies View RelatedHi!
Just set up my first Service Broker test. Wanted to send an Event Notification from one instance to another. Finally, the message arrives but profiler shows that the message is still being continously resent (and rejected as being duplicate). What am I doing wrong?
With best regards,
Artus
--
/* Local Event Source.sql */
USE master
GO
CREATE DATABASE NotificationDB
GO
ALTER DATABASE NotificationDB SET ENABLE_BROKER WITH ROLLBACK IMMEDIATE;
GO
CREATE ENDPOINT BrokerEndpoint
STATE = STARTED
AS TCP
(
LISTENER_PORT = 5554
)
FOR SERVICE_BROKER
(
AUTHENTICATION = WINDOWS,
ENCRYPTION = DISABLED
)
GO
USE NotificationDB
GO
CREATE EVENT NOTIFICATION TestEN
ON DATABASE
FOR CREATE_TABLE
TO SERVICE 'ExpressService', 'AFEDD339-AD3D-4865-AF3C-299B0A0784C6'
GO
CREATE ROUTE ExpressRoute
WITH SERVICE_NAME = 'ExpressService' ,
BROKER_INSTANCE = 'AFEDD339-AD3D-4865-AF3C-299B0A0784C6',
ADDRESS = 'TCP://localhost:5555'
GO
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Pa$$w0rd';
GO
ALTER MASTER KEY ADD ENCRYPTION BY SERVICE MASTER KEY;
GO
USE master
GO
SELECT service_broker_guid FROM sys.databases WHERE database_id = DB_ID()
GO
/* Remote Service.sql */
USE master
GO
CREATE DATABASE Test
GO
ALTER DATABASE Test SET ENABLE_BROKER WITH ROLLBACK IMMEDIATE;
GO
CREATE ENDPOINT BrokerEndpoint
STATE = STARTED
AS TCP
(
LISTENER_PORT = 5555
)
FOR SERVICE_BROKER
(
AUTHENTICATION = WINDOWS,
ENCRYPTION = DISABLED
)
GO
USE Test
GO
CREATE QUEUE ExpressQueue
WITH STATUS = ON
GO
CREATE SERVICE ExpressService
ON QUEUE ExpressQueue
(
[http://schemas.microsoft.com/SQL/Notifications/PostEventNotification]
);
GO
GRANT SEND ON SERVICE::ExpressService
TO [public]
GO
CREATE ROUTE ExpressServiceRoute
WITH SERVICE_NAME = 'ExpressService',
BROKER_INSTANCE = 'AFEDD339-AD3D-4865-AF3C-299B0A0784C6',
ADDRESS = 'LOCAL'
GO
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Pa$$w0rd';
GO
ALTER MASTER KEY ADD ENCRYPTION BY SERVICE MASTER KEY;
GO
SELECT service_broker_guid FROM sys.databases WHERE database_id = DB_ID()
GO
SELECT * FROM sys.endpoints
GO
I have a stored procedure into which a bit type of parameter called '@activated' is being passed. This stored procedure gets all the users matching the condition :
Activated = isnull(@activated, -1)
In users table, one of the columns is 'Activated' of bit type.
The strange thing happening here is that if @activated is null, then the above condition is true for all rows in users table, even though we know that the column Activation is either 1 or 0 only and never -1.Can someone explain why this strange thing is happening?
Hi guys!
Is it possible for a stored procedure to be activated more than once even if a message is sent only once? After sending the message, I check the sys.dm_broker_activated_tasks and see that it activates more than once. Is there a way for me to prevent this from happening?
Thanks a lot! :)
Hi
I'm having a problem debugging (with VS2005,) a CLR Stored Procedure which is activated on a queue. I know it is working because it is consuming and processing messages when one appears in the queue.
I can debug it 'manually' by either right-clicking on the SP within VS2005 and selecting 'Step into Stored Procedure' or by attaching to the SQL Server Management Studio process, setting a breakpoint and executing the stored procedure from a Management Studio query window.
However, if I send a message to my queue within Management Studio, my breakpoints are NOT being hit within VS2005, but the message IS reaching my queue and it IS being processed by the SP.
Can anyone help?
Thanks
Hi I have a couple of questions to understand better Service Broker..
Every time I alter the activation Stored Procedure on the receiving queue I also execute the:
alter database set new_broker rollback
1) can somebody explain me in a detailed way why I have to do that? what happen inside SQL Server when there is a Stored Procedure activated on a queue??
Also link to white papers, resouces on so on are appreciated.
My Activation Stored Procedure calls other stored procedure.
2) If ONLY one of the nested stored procedures changes I have to execute the command:
alter database set new_broker rollback ???
I think that the answer to the first question will answer the second one..
Thank you for any helps!
Marina B.
I've read Remus' article on Fire and Forget tactics when it comes to ending conversations, and I have to admit I am guilty of sending a message to a service and immediately ending the conversation. I've set up a stored procedure to end the conversation on the initiator queue, but I'm guessing it's never being fired because I am not ending the conversation in the target activated stored proc, which is a CLR stored proc.
Can you tell me how to end the conversation from a CLR stored proc?
Now that I think of it none of the code I use in my TSQL activated stored procs to handle different message types and error-checking is done in the CLR stored proc.
Thanks
Hi There
2 Questions :
1. Almost in every SB example you will see this sql :
BEGIN TRANSACTION
WAITFOR (
RECEIVE TOP (1)
@MessageType = message_type_name,
@Message = message_body
FROM [Queue1]
WHERE conversation_handle = @ConversationHandle
), timeout 5000;
If this sql in an activated sp do you really have to have the waitfor ? Since the sp will only be fired if there is a message on the queue ?
2. It is reccomended that for high volume SB apps you do not do a top(1) receive but process batches. Exactly what is the best practice to do this. Receive a batch into a table variable and then what ? Process through it with a cursor ? That is not very efficient either, i would just like some insight into batch queue processing as everywhere i have seen uses top (1) from the queue ?
Thanx
Hi,
I am getting deadlock on activated procedure which I am using to receive message from the Service Broker Queue.
Deadlock details:
Two threads are tring to do delete on internal table queue_messages_122847900 ends up in a dead lock.
Activated procedure code
RECEIVE TOP(1) @xmlMessage = message_body,
@handle = conversation_handle,
@message_type = message_type_name
FROM TransactionQueue;
IF (@message_type = 'http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog')
BEGIN
END CONVERSATION @handle;
RETURN 0
END
.........................
.........................
After this I do process the message and some other processing
And then
END CONVERSATION @handle;
Note I do have single conversation group
Is their a problem in the way I am receiving and processing messages. Is it possible because of the delay between RECEIVE and END CONVERSATION same message is read by two different threads.
Thanks
Hi there .NET community.
I was wondering if there was a way to launch a stored procedure froman aspx page without the sqlCommand object sitting waiting for the sproc to return something.The procedure takes about 10 minutes to execute and the page timeouts.Is there a way to just execute the procedure and procede to the next line of script?
Thanks.
CaptainCrabs
Is this possible?
View 1 Replies View RelatedIs there a way to fire an alert from a stored procedure ?
thanks
I am doing my first SSB application where two different servers send messages to each other. The logic was all previously tested on a single server between two databases and it worked OK.
The problem I am having is that when the message is received at the target server (I see this in profiler), the stored procedure associated with the queue does not fire.
I see an acknowledgment fire back to the initiator, but it is like the target server does nothing with the initial message.
Any ideas on how I can further troubleshoot this? FWIW, I used the setup tool provided by RemusResanu to set up the routes and service bindings.
Thanks for any help!
John
I have a initiator and a target service broker peer.
Both are controlled by a C# unit test. The initiator uses the Microsoft.Samples.SqlServer class. The target service uses stored procedure activation.
Sending a message from the initiator to the target, saves the content of the message, along with its conversation handle in the target's database specific table.
The unit test needs - at a later time - to instruct the target to send a message back on the same conversation handle to the initiator service.
For this the C# unit test creates a Conversation off of the saved conversation handle:
Service client = new Service("cleintservicename", conn, tran);
Conversation dialog = null;
dialog = new Conversation(client, convHandle);
Sending the message on this dialog generates an error "Message body: <Error xmlns="http://schemas.microsoft.com/SQL/ServiceBroker/Error"><Code>-8495</Code><Description>The conversation has already been acknowledged by another instance of this service.</Description></Error>".
Is the error due to the fact that a service - using the activated stored procedure already picked up the conversation, so that a new reference to the service can not be created through the Service class in CLR?
If so, I might need then to skip the activated stored procedure in favor or a CLR service, alltogether?
Any help - greatly appreciated.
Hello, I receive this error "The SQL Server Service Broker for the current database is not enabled, and as a result query notifications are not supported. Please enable the Service Broker for this database if you wish to use notifications." I attach the database in Management Studio to query and enable the broker using the scrip below but to no avail. ALTER DATABASE DataName SET ENABLE_BROKER ‘''<<------successfulandSELECT is_broker_enabled FROM sys.databases WHERE name = 'Database name' ‘'''<<-------value is 1 Global.asax ... Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs) System.Data.SqlClient.SqlDependency.Start(ConfigurationManager.ConnectionStrings("dataConnectionString1").ConnectionString) End Sub...Web.config ... <connectionStrings> <add name="dataConnectionString1" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|jbp_data.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" /> <add name="ASPNETDBConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient" /> </connectionStrings>... Hope you could help. cheers,imperialx
View 1 Replies View RelatedHi,I have an application that causes a dead lock at random. The issue I amhaving is, when the deadlock occurs, my applications is not recievingany errors from the DB. ie, during the deadlock SQLServer is returningan empty recordset and user is seeing a blank screen. The app logicdoes not go into the Try Catch statment in the C# code. I can'tunderstand why my app is not receiveing 1205 error from SQL server whendead lock occurs.Any ides why this is happening?Thanks_GJK
View 3 Replies View RelatedIs it possible to create an event handler in a VB.net application to run whenever a Stored Procedure is run.
My application has a scheduled task which is created and scheduled by users of the application, whenever this scheduled task is run I would like it to contact the application to kick off a sequence of tasks. I would appreciate if anybody could point me in the right direction.
hi i am running a stored procedure and i want to trap the error of that stored procedure and pass it on the user in the asp.net prog.
my stored procedure are running thru a class library using C#. i tried various options of creating a new sql connnection with out using the classlibrary, but i dont get any errors. the code s
used is as follows Dim conn As New SqlConnection(System.Configuration.ConfigurationManager.AppSettings("dbconnection1"))
Dim cmd As New SqlCommand("usp_ImportPlanDetails", conn)
cmd.CommandType = CommandType.StoredProcedure'cmd.Parameters.AddWithValue("@ClientId", Session("ClientId"))
AddHandler conn.InfoMessage, New SqlInfoMessageEventHandler(AddressOf MessageEventHandler)
conn.Close()
Private Sub MessageEventHandler(ByVal sender As System.Object, ByVal e As SqlInfoMessageEventArgs)
Dim strMessage As String
For Each sqle As SqlError In e.Errors
strMessage = "Message:" + sqle.Message + "Number:" + sqle.Number + "Procedure:" + sqle.Procedure + "Server:" + sqle.Server + "Source:" + sqle.Source + "State:" + sqle.State + "Line Number:" + sqle.LineNumber
' strMessage = String.Format("Message: {1}, Number: {2}, Procedure: {3}, Server: {4}, Source: {5}, State: {6}, Line Number: {7}" , new Object[]{sqle.Message, sqle.Number, sqle.Server, sqle.Source, sqle.State, sqle.LineNumber})
'Console.WriteLine(strMessage)
lblErrorMsg.Visible = True
lblErrorMsg.Text = strMessage
and also tried doing this oImportPlan = New ImportPlan(System.Configuration.ConfigurationManager.AppSettings(APPSETTINGS_CONNECTION))
With oImportPlan
Try
.ClientID = Session("ClientId")
' .FileName = strFilePath1
.save()
Catch sqlex1 As SqlException
LogException(sqlex1)
End Try
End With
Catch sqlex As SqlException
LogException(sqlex)
End Try
Catch ex As Exception
lblErrorMsg.Text = "Error: Import Failed" + ex.Message
lblErrorMsg.Visible = True
End Try but have no luck in displaying the errors, My stored procedure has raiseerrors, Please help me out
I have a problem where a certain stored procedure disappears occasionally and I need to find out which script deletes it. I found this piece of code which gives the events related to the deletion of this stored procedure.
DECLARE @path NVARCHAR(260);
SELECT
@path = REVERSE(SUBSTRING(REVERSE([path]),
CHARINDEX(CHAR(92), REVERSE([path])), 260)) + N'log.trc'
FROM sys.traces
WHERE is_default = 1;
[code]...
Is there a way that I can find which stored procedure or event dropped this stored procedure?
I am running an environment as below
ADO 2.7
SQL Sever OLE DB Provider
VB 6
SQL Server 6.5 SP 5 A Update
If I run a stored procedure that contains a Print statement or gives a warning. Then any error that occurs after that is ignored. No error state is raised in VB and the Errors collection only contains the print or warning.
Can anyone tell me why?
Thanks
Chris
SQL Server has stopped a critical task, with the following error log. I have executed the task again and the same symptons occur.
--
EXCEPTION_ACCESS_VIOLATION raised, attempting to create sympton dump
***BEGIN STACK TRACE***
0x0040DC1A in SQLSERVR.EXE, ubfree() + 0x009A
...
...
--
Has anyone any had a simliar experience or have any suggestions for investigation?
Cheers
Jasper
I'm setting up a routine to do some reindexing. To get the info I need I'm trying to use the new function. The DB I think is causing the problem does pass DBCC CHECKDB. I'm not sure why I'm getting this but can not find anyone else that is getting this same error.
When I run this....
SELECT *
FROM sys.dm_db_index_physical_stats (NULL, NULL, NULL, NULL, 'detailed')
I get this....
Location: qxcntxt.cpp:954
Expression: !"No exceptions should be raised by this code"
SPID: 236
Process ID: 1060
Msg 0, Level 11, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.
Msg 0, Level 20, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.
If I run only for the DB I think is causing the problem I get this...
Msg 0, Level 11, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.
Msg 0, Level 20, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.
I am new to T-SQL programming. I need to write a main procedures to execute multiple transactions. How could I structure the program so that each transaction will not abort if failed. Instead, the next transaction will keep running. At the very end the procedure will output the error and report them back to the main program in the output parameters. Looking for pseudo code.
View 6 Replies View RelatedOLEDB transaction is making difference in my migrated application powerbuilder 10.5 which has new oledb driver which is replaced by MSS driver in previous Powerbuilder version.
1.)I am facing the below error on update/save this was not faced during my previous versino drive MSS in powerbuilder.This is oocure only after the change to oledb driver.
"Row change between retrieve and update.".
in front end of my application the error is poped as
"(STD1007) This row has been modified by another user. Save is canceled! ".
Please help to resolve this error.