DB Engine :: Cannot Stop Extended Event Session On Server
Jan 25, 2012
I have two extended events sessions running on a server. I do have sql jobs that automatically stop the XE sessions and import the results to working tables. I see two "ALTER EVENT SESSION XXXX ON SERVER STATE = STOP" statements that are being executed for more than 2 days, the wait types are XE_SERVICES_MUTEX and PREEMPTIVE_XE_SESSIONCOMMIT. This is not the first time I see this behavior.I do not want to kill the sessions (I guess the sessions won't die anyway) neither restart the sql service
We know we can use the event lock_deadlock and xml_deadlock_report to capture the deadlock info, however I also want to capture the execution plans for all of the SPIDs in the deadlock graph, how to output the execution plans to the extended events trace results either ? such as if there is an action for execution plan or workaround for it ?If there is no built in action for execution plan , may I know if we can add the customized info to the extended events results file also ? Such as when the deadlock related event happens , then we can run a query to get some info ,then added the info along with other info such as sql_text, dbname etc to the events trace results file either ? The reason is if we also know the execution plans when the deadlock happens, it is useful to turning the query based on the execution plans to reduce deadlock happening .
I use this code in a utility procedure (for performance testing) but it is really slow.
For example, a session with three events is taking 5 seconds to complete this query:
DECLARE @xml xml= ( SELECT CAST(xet.target_data AS xml) FROM sys.dm_xe_session_targets AS xet JOIN sys.dm_xe_sessions AS xe ON (xe.address = xet.event_session_address) WHERE xe.name = @name );
I am trying to use xquery to get event data back from extended events. I am trying to use some sample data from Grant Fritchey but I am getting null records back. Below is the xml - I just want to retrieve a distinct list of the client_hostname and client_app_name.
WITH xEvents AS (SELECT object_name AS xEventName, CAST (event_data AS xml) AS xEventData FROM sys.fn_xe_file_target_read_file ('C:LoginTraceShared_0*.xel', NULL, NULL, NULL)) SELECT distinct top 1000 xEventName, xEventData.value('(/event/data[@action_name=''Client_APP_Name'']/value)[1]','varchar') Client_APP_Name, xEventData.value('(/event/data[@action_name=''Client_Host_Name'']/value)[1]','varchar') Client_Host_Name FROM xEvents
My SQL Server 2005 SP4 on Windows 2008 R2 is flooded with the below errors:-
Date 10/25/2011 10:55:46 AM Log SQL Server (Current - 10/25/2011 10:55:00 AM) Source spid Message Event Tracing for Windows failed to send an event. Send failures with the same error code may not be reported in the future. Error ID: 0, Event class ID: 54, Cause: (null).
Is there a way I can trace it how it is coming? When I check input buffer for these ids, it looks like it is tracing everything. All the general application DMLs are coming in these spids.
I wanted to demonstrate something about CXPACKET wait type. For the purpose of this demo I've created a query in AdventureWorks database that uses a parallel query plan, an extended events session that captured the wait statistics for a single session and a query that shows the extended event's data. I ran it and it worked fine. Then I dropped and recreated the event session (to clear the data), in a new window I wrote a transaction that updated the table fallowed by waitfor statement so the first query will be blocked for few seconds and ran the whole thing again. The select statement was blocked as expected (ran for 9 seconds instead on 1 second as it ran without the blocking), but the wait stats that I got were almost identical to the those that I got without blocking the query.
--Query that uses parallel query plan With MyCTE as ( select top 50 * from Sales.SalesOrderHeader) select top 10000 * from Sales.SalesOrderHeader, MyCTE order by newid()
I have created a session in extended events and want to frequently monitor the events that i have filtered .The problem i am facing is i am not able to clear the previous data as we do it in SQL trace. i am able to see all the data that is occupied till now.whenever i start the test i want the current data only to be displayed.The work around is either delete the session and create a new one every-time which i do not want to do .I am able to see the CLEAR DATA FROM TABLE button but it is in Disabled state all the time.
I am learning Extended event to capture deadlock which already happened, for this in my SQL SERVER 2012.. I am simulating a deadlock . With [URL]... where given a query to find the deadlock details using extended event here is the code..Retrieve from Extended Events in 2012.
SELECT XEvent.query('(event/data/value/deadlock)[1]') AS DeadlockGraph FROM ( SELECT XEvent.query('.') AS XEvent FROM ( SELECT CAST(target_data AS XML) AS TargetData FROM sys.dm_xe_session_targets st JOIN sys.dm_xe_sessions s
[code]...
This code creates a deadlock but when i run the above Extended events query to get the details of deadlock, it doesnot display any results.
Is there any specific event i have to select in SQL profiler to monitor the process / user that kills active connection which is performing a batch data transfer. Any other alternative other than profiler that catches this (like XEvents)?
I am working (or trying to work) in Management Studio. I have one database that I use on my one and only machine. ( I am not using any of the default databases.) I have several queries saved as files, which I open as needed. Every time I open a file I get that VERY ANOYING Connect to Database Engine dialog box. OK, it's no big thing. I don't use Server Authentication so all I have to do is hit enter and I get connected. But why should I even have to hit enter once after I'm already connected?
We have an application running on SQL server. This application restores DB very frequently using Single user mode. Following are the SQLs that are executed to restore the database in single user mode and to get the database back in multi user mode.
alter database [test-db] set single_user with rollback immediate; --This sql is run using test-db use master;restore database [test-db] from database_snapshot = 'snapshot_test-db'; alter database [test-db] set multi_user;
After switching the test-db to single user mode some 4-5 background processes of Taskmanager jump in for the test-db kicking off the session that application has taken over in single user mode . These background process are deadlocked between them selves.
Please refer to the output of sp_who2 below at link [URL] .... and following is the deadlock XML.
NOTE: SPIDs in deadlock XML may differ from the output of sp_who2 as spids keeps on changing for these processes. <deadlock-list> <deadlock victim="process4bbfc78"> <process-list> <process id="process4bbfc78" taskpriority="0" logused="10000" waitresource="DATABASE: 5 " waittime="705"
[Code] ....
On searching for this problem I found out that people have faced similar problem but I was unable to find out the root cause and debug steps for this problem. Stopping the SQL server is provided as a solution to kick out these background processes but this is not a feasible in our case as code to restore DB runs very frequently resulting in this problem at a good frequency.
I also made sure that SQL Server Agent is not running. The SQL services running on server are SQL server, SQL Server Browser and SQL Server VSS Writer.
We have 3 maintenance jobs configured in this particular DB instance:
Daily backup of system database - SubPlan1 (Check Database Integrity Task --> Rebuild Index Task-->Backup Database Task)Daily backup of user databases - Five subplans for each task : (Check DB integrity --> Rebuild Index -->Backup User Database, Backup Log -->Cleanup History)Weekly maintenance - SubPlan1 (Check Database integrity job (system+user DB) + rebuild index job (system+user DB) )
PROBLEM: I just noticed that the User DB Rebuild Index task has been running since the 03/04 and the Weekly maintenance plan - subplan1 since the 12/04.
Which job is "safe" to stop without impacting the database?
The 2.0 version of ASPSTATE is slightly different than the 1.1 version in that one table has one additional column and another table uses a different data type and size for the key. The 2.0 version also has a couple additional stored procedures.
We'd like to manage just one session state database if possible so we're trying to figure out if Microsoft supports using the new schema for 1.1 session state access (it seems to work, but our testing has been very light).
Is there any official support line on this? If not, can anyone comment on whether or not you'd expect it to work and why?
i have created the folowing function but keep geting an error.
Only functions and extended stored procedures can be executed from within a function.
Why am i getting this error!
Create Function myDateAdd (@buildd nvarchar(4), @avdate as nvarchar(25)) Returns nvarchar(25) as Begin declare @ret nvarchar(25) declare @sqlval as nvarchar(3000)
set @sqlval = 'select ''@ret'' = max(realday) from ( select top '+ @buildd +' realday from v_caltable where realday >= '''+ @avdate +''' and prod = 1 )a'
I have been testing with the WMI Event Watcher Task, so that I can identify a change to a file. The WQL is thus:
SELECT * FROM __InstanceModificationEvent within 30 WHERE targetinstance isa 'CIM_DataFile' AND targetinstance.name = 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Backup\AdventureWorks.bak'
This polls every 30 secs and in the SSIS Event (ActionAtEvent in the WMI Task is set to fire the SSIS Event) I have a simple script task that runs a message box).
My understanding is that the event polls every 30 s and if there is a change on the AdventureWorks.bak file then the event is triggered and the script task will run producing the message. However, when I run the package the message is occurring every 30s, meaning the event is continually firing even though there has been NO change to the AdventureWorks.bak file.
Am I correct in my understanding of how this should work and if so why is the event firing when it should not ?
Server 2003 SE SP1 5.2.3790 Sql Server 2000, SP 4, 8.00.2187 (latest hotfix rollup) We fixed one issue, but it brought up another. the fix we applied stopped the ServicesActive access failure, but now we have a failure on MSSEARCH. The users this is affecting do NOT have admin rights on the machine, they are SQL developers. We were having
Event Type: Failure Audit Event Source: Security Event Category: Object AccessEvent ID: 560 Date: 5/23/2007 Time: 6:27:15 AM User: domainuser Computer: MACHINENAME Description: Object Open: Object Server: SC Manager Object Type: SC_MANAGER OBJECT Object Name: ServicesActive Handle ID: - Operation ID: {0,1623975729} Process ID: 840 Image File Name: C:WINDOWSsystem32services.exe Primary User Name: MACHINE$ Primary Domain: Domain Primary Logon ID: (0x0,0x3E7) Client User Name: User Client Domain: Domain Client Logon ID: (0x0,0x6097C608) Accesses: READ_CONTROL Connect to service controller Enumerate services Query service database lock state
I have some C# code that iterates through the session state, serializes each object and stores the binary representation in an SQL table with an 'image' column. The problem is: it doesn't work. SQL server doesn't throw an error (at least ADO.NET doesnt propagate it); the table is just left unchanged. The SP works (I tested it with a few simple values); the MemoryStream and byte array are being populated correctly and bound to the parameter correctly.
What am I doing wrong? Anyone have a better approach? I know there is a builtin way of storing state in an SQL server, but I only need to do this once--namely, when a user is redirected from non-secure to secure pages--so I don't want to take that performance hit,
Does SQL Server have a session browser similar to Oracle and if so, how can I use it? I am looking to retrieve the SQL being ran when users are running particular reports from a gui tool.
During a Wise Installation upgrade of our software, we are renaming a directory that contains our ExtendedSP DLL. We issue a DBCC TSWSQLXP(Free) call before doing the rename, yet SQL Server, still "holds on" to that DLL. We install a new version, and the ListDLLs utility (from sysinternals) lists the new DLL in the correct directory.
However, when trying to remove the renamed directory, it won't let us remove the old DLL because it says it is in use. We can delete the NEW DLL in the NEW directory with no problem.
I have run the DBCC call numerous times and SQL Server STILL won't release the DLL for deletion. The only way to delete the OLD DLL is to stop the SQL Server, delete the DLL, and then restart SQL Server. We do NOT want to do this because there may be other processes running in SQL Server.
I'm not sure what happened, but all of a sudden my SQL Server Agent service won't start. When I try to start it, I get the following error in the event logs:
"SQLServerAgent could not be started. Error creating a new session".
When I look in the Agent log file, i see the following:
Execute permission denied on object sp_sqlagent_has_server_access
Execute permission denied on object sp_sqlagent_get_startup_info
I am trying to run a stored procedure in SQL 2005 which calls a registry value using the RegRead stored procedure which in conjunction executes a line of code. This stored procedure has previously worked in both Sql 7/2000.
However, I am getting the following error when trying to run it in SQL 2005:
Msg 22001, Level 16, State 1, Line 0 xp_regread() returned error 5, 'Access is denied.'
Does anyone know if Extended Stored Procedures are supported in SQL 2005?
I have a .NET 1.1 component that I want to use as an extended stored procedure in SQL Server 2000. Is this possible? FYI, I read in many sources (e.g. MSDN blogs) that creating extended stored procedures can only be done using a low level language such as C/C++.
I am wondering if it's possible to expose this component as a COM component using the .NET interop library, then register it with SQL Server 2000, and finally be able to consume it from TSQL?
I use EM to handle 2 SQL servers. One I can `stop`; the other I can`t. (except I think I used to be able to do so).
When I select the `stop` I get the following message from EM:
"An error 1051 - (A stop control has bee sent to a service which other running services are dependent on) occurred while performing the service operation on the MSSQLServer service."
How do I track down what this other running service is? How do I stop SQL?
I have an ASP.Net (C# 2.0) application that has been using SQL Server 2005 Standard Edition with Service Pack 1 to hold the session state in a testing environment. Currently, the session state is being stored in TempDB, rather than the ASPState database. This has worked very well for us until yesterday. We installed SQL Server 2005 Service Pack 2, as well as the Critical Update for Service Pack 2 (KB933508). Once the SQL server was rebooted, I got the following error message when I tried to access the web application. The SELECT permission was denied on the object 'ASPStateTempApplications', database 'tempdb', schema 'dbo'.The SELECT permission was denied on the object 'ASPStateTempApplications', database 'tempdb', schema 'dbo'.The INSERT permission was denied on the object 'ASPStateTempApplications', database 'tempdb', schema 'dbo'. In the web.config file for the application, I have a SQL username and password defined that can access the ASPState database. To correct this issue, I had to give this user db_datareader and db_datawriter access to tempDB.
Has anyone else run across this problem, and is it related to SQL Server 2005 Service Pack 2?
I am contemplating storing session state data in a SQL server database (created by running the installSqlState.sql script included in the .NET framework installation) and have established a functioning connection to the database but I am constantly getting "access denied". I've found that tweeking the permission settings in SQL for the ASP.NET user is resolving each specific error that arises but was wondering if there is a more "global" resolution? I'm finding myself having to manually check off each individual object and every option or is this what is needed to resolve the "access denied" error?
