CLR_Auto_Event And CLR_Manual_Event Wait States
Mar 10, 2008
Hello,
I'm hoping someone can clarify what I am seeing below:
I have a SQL Server which the 2nd top wait state according to the SQL Server 2005 SP2 dashboard is "CLR_Auto_Event" and "CLR_Manual_Event". This server dosen't have CLR Integration enabled in "Surface Area Configuration", and we do not have any CLR applications. I've checked this dashboard many times and CLR never appeared before, and nothing has changed on the server interms of new databases, and we don't host any applications on the server. I ran a short profiler trace and didn't see any CLR Assembly Loads.
Is there something I'm missing....?
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Dec 13, 2007
I have been checking out this CLR_AUTO_EVENT, according to performance dashboard and sys.dm_os_wait_stats we have lot of wait there. More then 45% of total wait on the server. I fired up my local server and installed assembly a sample table and started to reproduce the behavior. After running more 1000 call to function CLR_AUTO_EVENT start to accumulate. I started to comment out a bit of the logic. But still CLR_AUTO_EVENT builds up.
<Microsoft.SqlServer.Server.SqlFunction()> _
Public Shared Function fu_VarFilter( _
ByVal varKodIn As SqlString, _
ByVal varFilterIn As SqlString _
) As SqlBoolean
Normal there is logic here that select what row to return. But commed it out and still the
' CLR_AUTO_EVENT builds up.
Return True
End Function
Call
select * from tfanvar WHERE dbo.fu_VarFilter('21-1-1-1-3', VldVar) = 1
In this way the whole table is scan and all rows are delivered , With this completely empty function I get CLR_AUTO_EVENT start to accumulate
Shall I even care about this wait? Or what? Is that normal?
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Oct 30, 2004
I feel real bad asking this...but I have a state table...ordered by State ASC
and it mixes US and Canada, of course. I want to set up a table and a
stproc to produce a dropdownlist that looks like this (as I've seen in many
websites' state tables):
United States --
Alabama
Arizona
...
Canada --
Alberta
...
...and so on, so that the country is listed as a heading with no state code value
and the states each appear in asc order under the country heading. I don't know
how to do this. Does anyone have a good example of how to do this?
Thx much,
reid C.
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Mar 8, 2008
I'm creating a database of truckers, which has company name, address, etc. I also want to include which states that they service.
For example:
Trucker A, services California, Nevada, and Oregon
Trucker B, services Nevada and Oregon
Trucker C, services Oregon
Trucker D, services New Mexico
When searching, if I'm looking for a trucking company that services Oregon, I run a search for Oregon, only Trucker A, B, and C will show up, but not Trucker D.
I created a table called truckers, with a primary key of Trucker_ID, put in columns, for company name, address, etc.
Next I create a table for the states, what’s the best way of creating that table?
Would I create a table with 50 different columns, putting in a State_Id column, and then relating Trucker_ID with State_ID, or is there a better way of going about that?
Thanks,
marly
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Mar 16, 2007
WHILE (1 = 1)
BEGIN
BEGIN TRANSACTION ;
DECLARE @ErrorM NVARCHAR(4000),@ErrorNumber INT, @ErrorSeverity INT,@ErrorState INT,@ErrorProcedure NVARCHAR(200);
declare @messageTypeName sysname
declare @ConversationHandle uniqueidentifier
declare @MessageBody xml
declare @ErrorMessage varchar(8000)
SAVE TRANSACTION UndoReceive ;
WAITFOR ( RECEIVE TOP(1) @messageTypeName = message_type_name,
@messageBody = message_body,
@conversationHandle = conversation_handle
FROM [Queue]), TIMEOUT 500 ;
IF @@ROWCOUNT = 0
BEGIN
ROLLBACK TRANSACTION ;
BREAK ;
END ;
IF (@messageTypeName = 'RMIS_IBT_Msg')
BEGIN
BEGIN TRY
EXEC Eur_SYS_ImportTillIBTFromXML @MessageBody
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION UndoReceive ;
SELECT @ErrorMessage = 'XML Failed to process with errorNO:' + CAST(ERROR_NUMBER() as VARCHAR(10)) + ' SEVERITY:' + cast(ERROR_SEVERITY() as varchar(10)) + ' State:' + Cast(ERROR_STATE() AS Varchar(10)) + ' Procedure:' + ISNULL(ERROR_PROCEDURE(), '-') + ' Message:' + ERROR_MESSAGE()
INSERT INTO SB_ERRORMSG (conversation_handle,MSG_Type,msg_data,date_created,ErrorTxt)
VALUES (@ConversationHandle,@messageTypeName,@MessageBody,GETDATE(),@ErrorMessage)
END CONVERSATION @conversationHandle WITH ERROR = 500 DESCRIPTION = 'Unable to process message.'
END CATCH ;
END
The above code is an example of my que handling procedure. i.e mark transaction call an sp to process the message if it errors rollback to the mark and put in a table for valuation. the problem i am having is the message handling sp can call another sp (i have put transction marks and error handling in) but they still fail and do an entire roll back i.e get this error
Msg 3931, Level 16, State 1, Line 10
The current transaction cannot be committed and cannot be rolled back to a savepoint. Roll back the entire transaction.
This then rolls back the entire transactiom and does not take the message of the queue thus it becoming a poison message.I would like to know is if any dequeing procedures fail (nested and at any level) how can i get the xml into an error table and message off the que without it disabling my queue.
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Nov 13, 2014
Supposing there are three Columns: Countries, Provinces and States.Then when the user enters “USA” for country, it will bring up a list of states, if they enter “Canada” for country, it will bring up a list of provinces, if they enter another country, it will not bring up any list?
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May 22, 2004
Hi All
I installed the following in order:
1. .NET Framework Version 1.1 Redistributable
2. .NET Framework Version 1.1 Software Development Kit (SDK)
3. MSDE 2000 Rel A
In the command window I changed to the directory where MSDE 2000 Rel A was installed and typed in this:
setup.exe INSTANCENAME=MyDb DISABLENETWORKPROTOCOLS=1 SAPWD=<My SA PASSWORD>
MSDE installed successfully and the little icon appeared in the system tray, next to the clock. However, there was no little green arrow/triangle showing on the icon to show connection status as Connected.
4. ASP.NET Commerce Starter Kit
During the Starter Kit install a Connect to Database window opened - Connect to SQL or MSDE.
In the 'Server' field the following was automatically displayed:
STEVE-HOME/MyDb
Where STEVE-HOME is the name of my computer (changed from 'localhost') and MyDb is the instance name.
Thw 'Windows Authentication' radio button was selected by default. I left this unchanged, then clicked OK.
A window opened asking to test the connection. I clicked OK and the connection was successful.
(I didn't select the SQL Server authentication or enter a username, password or select a Database.)
The Starter Kit installed successfully and works fine. However, the SQL Server Service Manager icon states it is not connected when I mouse over it.
I opened the SQL Server Service Manager window and the Server and Services fields are blank.
Surely the Starter Kit wouldn't work if MSDE wasn't connected.
Can anyone advise on how to get the icon to show it is connected
Your help would be greatly appreciated.
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May 5, 2015
I have a table where i have to make a check constraint that states the first 3 characters of the customerid field must be the first 3 characters of the company name I am so lost I looked everywhere.
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Sep 22, 2006
Hi,
is there a way to import a decision tree-model from pmml where a node contains two or more states of an attribute as the split-rule?
Example:
...
<Node recordCount="600">
<CompoundPredicate booleanOperator="or">
<SimplePredicate field="color" operator="equal" value="red" />
<SimplePredicate field="color" operator="equal" value="green" />
</CompoundPredicate>
<ScoreDistribution value="true" recordCount="200"/>
<ScoreDistribution value="false" recordCount="400"/>
</Node>
...
This node shoud contain all cases, whose color is red or green (The Microsoft DecisionTree-Algorithm would build a model with two steps like red/ not red and then green / not green). According to the DMG, this is valid PMML 2.1, but when trying to import the server complains about an unexpected value in the SimplePredicate-tag.
How can i import such a node in SqlServer 2005?
Thank you in advance for any help
Chris
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Aug 1, 2000
I am running into problems while running a large procedure, and i think it may have something to do with a PAGEIOLATCH_SH wait problem.
My server, whose sole purpose is to run this one procedure, is doing plenty of disk i/o, and the CPUs bouncing around, so I assume its working. But when I look at its process info, it seems to be sleeping a lot of the time on PAGEIOLATCH_SH. No other users are in the DB, so I'm quite confused. I don't find much info on this anywhere, so any insight would be very appreciated.
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Jan 15, 2008
I'm new to SQL Sever 2005 and I'm trying to do what Informatica (Power Center - ETL) is trying does.
I have created a work flow and it is scheduled to run at every night 1:00 AM .The process is to load a flat file (CRV.data) into the database from a shared location.The flat file is transfered from a 3rd party and once the file transfer is complete it will create a indicator file (0 byte eg: CRV.DONE file) which indicates the CRV.data transfer is complete.
In my workflow I will be waiting for the CRV.DONE indicator file and once it is avaiable I will start loading the CRV.data and once the load is completed I will delete CRV.DONE file and be ready for the next day load.
Please let me know if there is any way in SQL Server 2005 to achieve it.Thanks
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Jun 11, 2007
Hi. We are migrating a mainframe datacom database to SQL Server. One of our client-server applications already uses SQL Server. This application uses a middleware product to query and update the datacom database being migrated. We are considering using Service Broker to replace the middleware.
In many cases the client does not need a response provided the message is queued and will eventually get delivered. However, in some cases the client would like to wait for the message to be processed before proceeding. Is there an easy way to both submit and optionally wait for a response - with data - in a single stored procedure? If client does not want to continue to wait, is there a way to use a procedure to check for the returned message later?
We have not used Service Broker before and are doing for a "sanity" check before proceeding. We do not want to tightly couple the two databases at this time.
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Dec 11, 2007
I have installed performance dashboard on 2 different servers. The first server have User Session CPU Time 71% and Wait Time =28%, The other server have Cpu Time of 20% and Wait Time of 79%. Have I understand that stands in SQL Server Waits And Queues that I have some typ of wait problem in my second server?
Then I tries to run this
Select
'%signal waits' = cast(100.0 * sum(signal_wait_time_ms) / sum (wait_time_ms) as numeric(20,2)),
'%resource waits'= cast(100.0 * sum(wait_time_ms - signal_wait_time_ms) / sum (wait_time_ms) as numeric(20,2))
From sys.dm_os_wait_stats
First Server
%signal waits %resource waits
--------------------------------------- ----------------------------
0.07 99.93
Second Server
%signal waits %resource waits
--------------------------------------- ----------------------------
0.12 99.88
Messy in my head Help please
My second server have
CLR with 50% in the historial wait. Rest in Sleep
My first server have
99% in sleep wait category.
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Sep 30, 2004
I'm doing an update on a table with about 113m rows, the update-statement is fairly simple: update tab set col = null where col is not null.
The col column is mostly null.
Sysprocesses shows three rows for this statement: 1 CXPACKET (its a dual processor, 2000 box with sp3 installed), 2 PAGEIOLATCH_SH (waitresource is filled). My guess would be that the where-clause is executed in a seperate process blocking the update.
I changed the statement into update [...] set col = null; sysprocesses shows one row with PAGEIOLATCH_SH. Executing forever.
I checked other processes including those outside sqlserver but none are using the db, let alone accessing the table involved. Even restarted sqlserver to be sure there's no dead process blocking the update. Didn't help.
So I added a search condition to the where-clause, involving a clustered index in order to reduce the rowcount. The execution plan shows a 97% hit on the clustered index, but sysprocesses shows the three rows again...
So far the profiler didn't help me out either: there's a SP: CacheInsert on the update-statement... then nothing.
What should I do?
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Jan 14, 2005
I have an ASP.NET web application that hangs on a single database UPDATE command for 5+ minutes. I can see this occur in SQL Profiler. This is a one row UPDATE statement on a small table (~600 rows). There are no JOINs or sub queries. There are no other users using the system. During this 5+ minutes, I can see the job in Enterprise Manager with a wait type of NETWORKIO. Since both IIS And SQL Server are running on the same system, the network shouldn't be an issue. Any ideas?
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Sep 29, 2006
Hello, my first post??
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Aug 31, 2006
I'm writing a small vbscript to backup a db and some related files, so I used a WSShell calling OSQL to run a Sql BACKUP command, then after it's finished I XCOPY the resulting file plus some other related files. But the problem is that OSQL ends it's execution as soon as the BACKUP command is sent to SqlServer, not when the backup itself ends.
Anyone knows how to synchronize the two? How to wait, inside OSLQ, for the end of the BACKUP execution?
TIA
Luigi
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Jan 6, 2008
I setup a SQL Agent to send me an email when the Average Latch Wait Time is greater than 300ms. Now I receive an email every 15 seconds stating that the current ALWT is 3916ms. That value never changes with the emails. However, the perfmon shows nothing at all (shows zero).
I also have a Buffer cache hit ratio of 2848.00.
These numbers are when there is NOBODY on the DB at all It is just sitting there. When I reboot the server, as soon as SQL starts it starts to send the emails again.
Server: Intel Xeon Quad Core 2.66
RAM: 4GB (with /3GB in the boot.ini)
RAID 1: OS
RAID 1: Data (DB and logs)
CPU Utilization: 0-1%
RAM Utilization: 527MB
OS: Server 2003 R2 With SP2
SQL: 2005 Standard with SP2
How can I determine if the ALWT is really 3916?
I executed 'Select * from sysprocesses where SPID>50 and waittime>0'
Which showed;
BROKER_RECEIVE_WAITFOR
waittime=110640ms
waittype=0x0075
status=suspended
program_name=DatabaseMail90 - Id<3780>
Any assistance is greatly appreciated.
Thank You
Magnum
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Jul 20, 2005
Oracle has a 'wait interface' for monitoring bottlenecks, etc... does SQLServer have utilities like this?
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Feb 1, 2007
Hi,
I have a data-flow-task that imports data to sqlserver.
Now I want to check, if a special column of an imported record is null.
If yes, I have to wait 10 minutes and jump to the data-flow-task again. (Cjeck and wait).
How can I do this with the integration services?
Thanks
Gerd
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Mar 7, 2008
We have a few SSIS jobs that we are currently manually kicking off after we are sure that certain AS400 jobs have run. We want to completely automate this process, so that we don't have to babysit. What is the most efficient way to do this? In the past (on SQL Server 7 no less) I've seen the 400 job setting a flag to 'Y' in a 400 file, FTPing it down to a flat file, and then the SQL job running every five minutes checking the flag. When it was 'Y', the SQL job would run. We do not have the option of using FTP here. Any suggestions would be appreciated! After the job runs, we'd like it to kick off a report as well
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May 16, 2008
So, I'm fairly new to SQL, and I'm working with a SQL2k5 Database with pre-made packages and what-not. This database was setup before I started this job, and now I'm trying to improve part of the processing in SQL, and so far so good, but I can't figure a couple things out.
The main problem is when I start a SQL command to launch a DTS package from a .sql file, how can I make it wait for the package to complete or fail before moving onto the next part of the .sql script? Hope it's a simple question, I've just taught myself enough SQL to get by in a couple of weeks.
Thanks!
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Dec 14, 2007
I am tring to fiqure out how i can run a TSQL and the have it start again 60 sec after it compleats, without me have to push the button. I just need it to loop over and over until my data is deleted. I have to do it this way so my site will still allow customers to login and I need the break so they can. Any help would be great.
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Jul 5, 2007
are there any tasks in SSIS that watches a folder and waits for incoming files?
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Jun 8, 2006
I have re-initialize some subscription. After generated snapshot successfully, the synchronization view showing 'The process is running and is waiting for a response from the server.' and I found the replication process is under 'async_network_io wait'. The job has run for more than 8 hrs. Any idea to improve it? Thanks in advaise.
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Apr 11, 2007
Good morning,
I will start off with the default warning message: I am a beginner. That said, I have an SSIS process that calls an external executable to transform a data file through a homegrown C program. (This will eventually be converted, but for the moment needs to remain.) The end of the run creates a *.done file. How do I use the SSIS tasks to pause/wait, checking periodically, for the existence of this file before continuing with processing tasks? I apologize if this is easy, but I am stumped.
Thanks in advance,
Roger
Info:
SQL 2005
Microsoft SQL Server Integration Services Designer
Version 9.00.3042.00
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Feb 9, 2001
When I run some of the quiries, in current activity, wait type would say:
PAGEIOLATCH_SH what does it means ? Is there a source I can see all
types of wait types ?
Help is much appreciated.
Thanks,
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Oct 3, 2014
I keep getting an alert from a Third-Party Tool stating my server is reporting failed components with the following message
Components Reporting Problems:
Average Lock Wait Time(ms)(Critical)
When I look at sp_who2 or sp_lock I don't see anything blocking processes or anything else out of the ordinary.
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Jul 24, 2007
CXPACKET wait type current makes up 63% of all the wait types which is causing latency. I need to identify the specific workloads responsible for waits so I can optimise or MAXDOP them. I already know how to retreived the top IO, CPU, Memory consuming queries but how do I identify the statements and order them by wait time?
Can someone point me in the direction of a command, DMV or will the top CPU list be adequate?
Thanks
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Dec 13, 2006
Hello,
It seems strange to me that once the UNION ALL component waits for at least one row from each input buffer before it puts anything into the output buffer (that's the behaviour that I have observed anyway).
Why does it do that?
Thanks
-Jamie
[SSIS Team Followup]
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Oct 5, 2015
I would like to know what a particular session is waiting on (cpu, io, memory etc).
For that I try to figure out how to use extended events. I would prefer to avoid the use files written to db-server, why I tried "histogram target".
Well my attempt does not produce usefull output,
-- check current event sessions
SELECT a.name,
CASE WHEN b.name IS NOT NULL
THEN 'Started'
ELSE 'Stopped'
END AS current_state
[Code] ....
The intention was to get a pareto chart, to see the top wait events in the session. I would also like to see amount of cpu used. Based on this tuning effort could be prioritized.
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May 13, 2008
OK, I know this is out there all over and yes I did a search for this topic; however, I am confused about tables with an image data type and with moving text file group to another filegroup.
Here is what I have:
I have a table storing imaged documents and has become very large. I want to move the table to another filegroup. The table is created like this:
USE [PD51_Data]
GO
/****** Object: Table [dbo].[SCANNEDDOCUMENTS] Script Date: 05/13/2008 14:52:40 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[SCANNEDDOCUMENTS](
[DocID] [int] IDENTITY(1,1) NOT NULL,
[CaseID] [int] NOT NULL,
[DocName] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Doc] [image] NOT NULL,
[DocLocation] [varchar](255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[DocNotes] [text] COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[TopicID] [int] NULL,
[ScannedDocumentsCheckSum] [varchar](128) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,PRIMARY KEY CLUSTERED
(
[DocID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[SCANNEDDOCUMENTS] WITH NOCHECK ADD CONSTRAINT [ISCANNEDDOCUMENTS2] FOREIGN KEY([TopicID])
REFERENCES [dbo].[TOPICS] ([TopicID])
GO
ALTER TABLE [dbo].[SCANNEDDOCUMENTS] CHECK CONSTRAINT [ISCANNEDDOCUMENTS2]
On a test DB, I moved the clustered and nonclustered indexes to a secondary filegroup no problem, but it still shows to be stored in the primary filegroup. I read an article about having to create a new table in the secondary in order to move the images and text file group. Has anyone come across this?
Do I need to drop the clustered index and FK to move to a secondary filegroup?
Or
Do I create a new table into the secondary filegroup and then add the Clustered index and constraints?
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Aug 4, 2015
For one of our SQL server 2005 Ent edition 64 bit SP4 which has transnational replication set up and used for heavy reporting, i was trying to counter out the performance of slow running queries which basically runs and get suspended and most often are seeing waiting:So i tried to analyse the wait stats and come up with below stats where ASYNC_NETWORK_IO dominated for a collection of two weeks data.
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