Sp_who2 ( Blkby -2 ) MSDTC
Oct 24, 2007
Hello,
When I run sp_who2, the blkby col shows spid -2.
From doing some reading I understand this is caused by SQL waiting on MSDTC.
If I look at MSDTC running transactions I can see 2 transactions, the transaction are not mark as indoubt so I cannot commit, abort or forget them.
If I stop ALL the Processes that are using the DB, eg IIS and a 3rd party workflow engine, these transactions do not go away.
Anyone got a clue?
If I restart MSDTC, the blocks go away in SQL but this is not a solution to the problem.
All MSDTC gives me is the ID for the transaction, can I get more info on whats happening from this ID.
Thanks
Steve
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Jun 21, 2007
am experiencing excessive SSB thread block'n...sql error log is reporting LOTS of Resource Monitor messages about non-yielding threads (nothing meaningful can be surmised from it).
I am running on a 4way 64bit 2003 box w/6gb ram!!!
SSB architecture is simple implementation... Leveraging async trigger(s) in 42 db's (all on same instance) that post (via srvc) into a mstr db queue...where a listener is pull'n them off and applyies to a table (trying to avoid excessive 1205's that I was experiencing using sync trigger approach before)....messages sit in respective db's trans queue and draining of queues is extremely SLOW!!!! I mean SLOW!!!
Eventually SqlServer.exe process pegs out ALL processors!!! Only can reboot box to get connectivity back...~
Anyone have this experience!? (really hope not...but I need help)
Have completely cycled SSB machinery (via disable/enable)...and have even stepped thru enabling one db at a time...but still very poor performance!!!
Anyone?
-mt
sp_who output here...
BACKGROUND sa . 16 NULL RESOURCE MONITOR
BACKGROUND sa . . NULL LAZY WRITER
SUSPENDED sa . . NULL LOG WRITER
BACKGROUND sa . . master SIGNAL HANDLER
BACKGROUND sa . . NULL LOCK MONITOR
sleeping sa . . master TASK MANAGER
BACKGROUND sa . . master TRACE QUEUE TASK
sleeping sa . . NULL UNKNOWN TOKEN
BACKGROUND sa . . master BRKR TASK
BACKGROUND sa . . master TASK MANAGER
SUSPENDED sa . . master CHECKPOINT
sleeping sa . . master TASK MANAGER
sleeping sa . . master TASK MANAGER
BACKGROUND sa . 16 ThompsonTractorD43 KILLED/ROLLBACK
sleeping sa . . master TASK MANAGER
BACKGROUND sa . . master KILLED/ROLLBACK
BACKGROUND sa . 16 master KILLED/ROLLBACK
sleeping sa . . master TASK MANAGER
BACKGROUND sa . . master BRKR TASK
BACKGROUND sa . 16 master BRKR TASK
sleeping sa . . master TASK MANAGER
sleeping sa . . master TASK MANAGER
sleeping sa . . master TASK MANAGER
sleeping sa . . master TASK MANAGER
BACKGROUND sa . 16 YancyMachineryCat KILLED/ROLLBACK
BACKGROUND sa . . master BRKR EVENT HNDLR
BACKGROUND sa . . master BRKR TASK
sleeping NT AUTHORITYSYSTEM REFINERY1 . msdb AWAITING COMMAND
sleeping NT AUTHORITYSYSTEM REFINERY1 . msdb AWAITING COMMAND
sleeping NT AUTHORITYSYSTEM REFINERY1 . msdb AWAITING COMMAND
sleeping NT AUTHORITYSYSTEM REFINERY1 . msdb AWAITING COMMAND
SUSPENDED NT AUTHORITYSYSTEM REFINERY1 . msdb DELETE
sleeping fastironweb DETROIT . Cat_Lvl3 AWAITING COMMAND
sleeping mike REFINERY1 . master AWAITING COMMAND
SUSPENDED NT AUTHORITYSYSTEM REFINERY1 . distribution WAITFOR
sleeping mike REFINERY1 . Cat_Cfsc AWAITING COMMAND
sleeping mike REFINERY1 . Cat_Cfsc AWAITING COMMAND
sleeping mike REFINERY1 . Cat_Cfsc AWAITING COMMAND
RUNNABLE mike REFINERY1 . Cat_Cfsc SELECT INTO
sleeping NT AUTHORITYSYSTEM REFINERY1 . msdb AWAITING COMMAND
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Nov 19, 2001
Whe we execute sp_who2 on a SQL server
Command column displays the following:Any idea on what is CONDITIONAl??
SIGNAL HANDLER
LOCK MONITOR
LAZY WRITER
LOG WRITER
CHECKPOINT SLEEP
AWAITING COMMAND
BULK INSERT
CONDITIONAl
Thanks.
Di.
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Apr 19, 2008
sp_who2 shows the block by user and some information.Currently we are moving from sql 2000 to sql 2005. if i execute the sp_who2 in sql 2005 it shows only my login block information. it does not show other users. is there any admin rights has to give to view other block user ??? how to do that.
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Aug 14, 2002
DiskIO: Any idea what exactly this tells on sp_who2 output? Does that men anything if its high/low?
Thanks.
Ravi.
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Jul 23, 2005
Is there any way to calculate (just an approximation is fine) theamount of work that is done for an insert statement?For example, can I calculate the approximate row size of my table andthen compare that with the DiskIO for my SPID to determineapproximately how many rows have already been written? Or, does theDiskIO include shuffling data around or other DiskIO that makes thiskind of comparison impossible?Thanks,-Tom.
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Jul 23, 2005
Thanks, folks, for taking time to help!In query analyzer and profiler, there seem to be system processes thatare generating high cpu time and disk io. Well, I guess the short ofit is that I am having a problem interpreting what I am seeing so thatI can take the next step in corrective action. There are also severaldomain controlled logins that appear to be on the same host name, atthe same time--these are laptops, not terminal servers--why would thesystem be reporting such a thing?Here is a sample of the output from sp_who2:SPIDSTATUSLOGINHOSTNAMEBLKBYDBNAMECOMMANDCPU TIMEDISKIOLASTBATCHPROGRAMNAME1BACKGROUND sa . . NULLLAZY WRITER75006/3/2005 5:142sleeping sa . . NULLLOG WRITER1025006/3/2005 5:143BACKGROUND sa . . masterSIGNAL HANDLER1606/3/2005 5:144BACKGROUND sa . . NULLLOCK MONITOR20306/3/2005 5:145BACKGROUND sa . . masterTASK MANAGER01516/3/2005 5:147sleeping sa . . NULLCHECKPOINTSLEEP243822396/3/2005 5:1410BACKGROUND sa . . masterTASK MANAGER0256/3/2005 5:1411BACKGROUND sa . . masterTASK MANAGER01636/3/2005 5:1412BACKGROUND sa . . masterTASK MANAGER0706/3/2005 5:1413BACKGROUND sa . . masterTASK MANAGER01556/3/2005 5:1451sleeping saMyServer . msdbAWAITINGCOMMAND683371386/8/2005 13:00SQLAgent - Generic Refresher52sleeping saMyServer . msdbAWAITINGCOMMAND1746266/8/2005 13:00SQLAgent - Alert Engine53sleeping DomainUser1LT1 . VPNMasterAWAITING COMMAND1687546/8/2005 12:31Crystal Reports54sleeping saMyServer . VPNMasterAWAITING COMMAND377296/8/2005 10:49MS SQLEM55RUNNABLE DomainUser2MyServer .masterSELECT 86006/8/2005 12:40SQL Profiler56RUNNABLE DomainUser2LT2 . VPNSELECT34496/8/2005 12:50Microsoft® Access57sleeping DomainUser3LT2 . VPNMasterAWAITING COMMAND110296/8/2005 12:52Microsoft® Access58sleeping DomainUser1LT1 .masterAWAITING COMMAND1172156/8/2005 9:31Crystal Reports59sleeping DomainUser4LT2 . VPNMasterAWAITING COMMAND1516/8/2005 12:50Microsoft® Access62sleeping DomainUser5LT2 . VPNMasterAWAITING COMMAND3226/8/2005 12:52Microsoft® Access63sleeping DomainUser6LT2 . VPNMasterAWAITING COMMAND50106/8/2005 12:52Microsoft® Access64sleeping DomainUser6LT2 . VPNAWAITINGCOMMAND101606/8/2005 12:52Microsoft® Access65sleeping DomainUser6LT2 . VPNMasterAWAITING COMMAND47496/8/2005 12:52Microsoft® Access66sleeping DomainUser3LT2 . VPNAWAITINGCOMMAND20306/8/2005 12:50Microsoft® Access67sleeping DomainUser6LT2 . VPNAWAITINGCOMMAND24906/8/2005 12:52Microsoft® Access68RUNNABLE saMyServer . masterSELECTINTO 62126/8/2005 12:59SQL Query AnalyzerThanks,Eric
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Mar 16, 2006
The behavior seems to have changed on SP_WHO2 in SQL 2005.
In SQL 2000 I could be logged in as a regular user in my system and run SP_WHO2 and get all the users currently logged in. This is no longer working in SQL 2005. It now only returns "me".
What kind of rights do you need to have to see who is logged in?
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Jun 10, 2004
In the sql server analyzer, i ran sp_who2 store procedure to find out the procesess and locks on the sql server. I noticed on the status column some entries "RUNNABLE", does this could trigger blocked to other processess if not closed by our application? or What does runnable status mean?
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Apr 2, 2008
Dear All,
i've a doubt regarding the difference between sp_who and sp_who2.
i've read in one article stating that sp_who is documented and sp_who2 is un documented.what is meant by this?
and please provide me the articles related to locks(what are different types of locks)
thank you very much
Vinod
Even you learn 1%, Learn it with 100% confidence.
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Apr 4, 2007
Hi!
I want to extract the same information as the Activity Monitor does with SQL in SQL Server 2000.
Have tried to use sp_who2 but I miss some important columns.
How do I do?
Thanks!
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Jul 23, 2005
I've got a new server with Pentium4 xeon processors. I've used sp_who2for quite a while on my old server -- to look at CPU and IO usage. Onthe new server, the CPU times are huge -- although actual performanceis quite good. I know sp_who2 is an undocumented proc. Has anyoneexperienced this or is it just me?
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Jul 28, 2000
Is it true that you only have one instance of MSDTC on an active/active Cluster SQL configuration?
All the installations I have seen so far will only allow the MSDTC resource to be under on resource group (usually one of the SQL groups...
Can you all that have worked with cluster respond.
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Apr 21, 2004
Trying to locate information on MSDTC. Is this "needed" to run SQL Server? That is, if this part of the installation is deleted, will SQL Server still function? Also, does anyone know if this is a crucial tool needed by Veritas Volume Manager or Windows Disk Manager?
If anyone knows of a link to this information, I'd appreciate it. My searches come up with lots on information on MSDTC, but nothing that answers my specific questions.
Thanks for your time.
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Mar 21, 2006
When i do a BEGIN TRAN to a SQL server sitting on Windows 2003 Server from a SQL Server Sitting on Windows 2000 Server,
the Transaction hangs and if I try o kill it the Transaction is in ROLLBACK State.
I tried setting the Properties for the MSDTC and restarted the Windows 2003 Server but in vain
It still hangs
Did any one come across this problem?
Thx
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Oct 16, 2006
I keep getting this error on my application server...what does it mean?The description for Event ID ( 0 ) in Source ( ODBC ) cannot be found.The local computer may not have the necessary registry information ormessage DLL files to display messages from a remote computer. Thefollowing information is part of the event: Failed to enlist in DTC:SQL state 37000, native error 8501, error message [Microsoft][ODBC SQLServer Driver][SQL Server]MSDTC on server 'PROSQL' is unavailable..any help would be appreciated...thanks-Jim
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Jul 20, 2005
I'm using msde. On the little icon in task tray, you have under currentservice, a choice of mssqlserver, and another choice is msdtc. What ismsdtc? And what is sqlserver agent?
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Aug 20, 2007
The resource msdtc is down. Every time, it works pretty well , after we restart the servers(node1 and node2). But, about half a hour later, the problem is there. We reintalled msdtc. It didn't work out too. msdtc and sql server is on a cluster. Can anyone help me out?
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Oct 6, 2006
Hi,
I am running SQl 7.0 (SP4) on Windows XP Professional (SP2). Whenever I try an insert/update type of activity, the System returns the following message :
Server: Msg 8501, Level 16, State 3, Line 2
MSDTC on server 'SERVER' is unavailable.
However, all the required services including MSDTC are running on the System.
Please help ASAP.
Thanks & Regards - Rajesh Pathak
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Nov 3, 2006
I have a class that use a TransactionScope object for make make two operations into a database. The problem is that in a computer works well but in another I receive a error message: "MSDTC is not running in .SQLEXPRESS". I had watched the services in the computer and the "Microsoft Distributed Transaction Coordinator" is running.
Does somebody know what is happening?
Thankyou and sorry for my English.
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Nov 4, 2003
I am selectively insert data from serverA databaseX to serverB databaseX.
(serverA is linked server on B.)
I could insert parent and child tables. But get error when insert to grand-child tables:
Server: Msg 8501, Level 16, State 3, Line1
MSDTC on server B is unavailable.
Don't think I need to turn on MSDTC on B. But I could copy and paste from source A server to target B server. Confusing on some table could insert while others with error....
thanks
-D
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Dec 14, 2004
I have an ugent situation. Due to a failure we had to build a new db server for an application and this was done succuessfully. The application requires DTC and it was not intalled when we install SQL on the server.
How do I install DTC? Did I miss an obscure option during SQL install?
Sidney Ives
Database Administrator
Sentara Healthcare
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Apr 12, 2004
Hi,
I recently moved & upgraded a database from 7.0 to 2000 that makes use of linked servers. After upgrading, a number of queries started failing with the error below. These linked servers with this problem either had a stopped MSDTC or were behind a firewall. I've read the articles on how to configure MSDTC to work through a firewall, but before I do this I'm wondering why this is even happening. There were no problems when the database was at SQL 7.0. Does anyone know why sql 2000 would need to use MSDTC, but SQL7.0 would not? I don't need to use a distributed transaction, so ideally I'd like to somehow tell SQL not to use MSDTC at all. Any ideas?
Thanks
Server: Msg 7391, Level 16, State 1, Line 1
The operation could not be performed because the OLE DB provider 'SQLOLEDB' was unable to begin a distributed transaction.
[OLE/DB provider returned message: New transaction cannot enlist in the specified transaction coordinator. ]
OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionJoin::JoinTransaction returned 0x8004d00a].
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Jul 20, 2005
The following code:DECLARE @tsql varchar(1000)CREATE TABLE #Test (...)SET @tsql = 'SELECT * FROM OPENQUERY(MyDataSource, ...)'INSERT INTO #Test EXEC(@tsql)generates the following error message at the insert statement:Server: Msg 8501, Level 16, State 3, Line 4MSDTC on server 'MyComputer' is unavailable.Why?Thanks,Tony PerovicCompumation, Inc.
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May 4, 2007
I have a SSIS package in which there are lot of Sequence Containers. Each sequence container has two Execute Sql tasks which brings 2 values, and if the comparison of the value is true, it runs a data flow task. Comparison is done using Expression.
If any of the sequence container fails the comparison, I wanted whole package to rollback so I had to use Transactions. I set "Required Transaction" on the package and "Supports Transaction" on each Sequence Container and Tasks respectively.
Now that I am trying to run the package, it runs few sequence containers fine and on few it gives this error.
[Execute SQL Task] Error: Executing the query "SELECT ISNULL(MAX(ClaimBillTypeKey), -1) ClaimBillTypeKey FROM dbo.Dim_ClaimBillType" failed with the following error: "Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Also, this is not consistent, one time one Seq. Cont will fail and next time it will run fine but something else will fail. What is going on????
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Feb 3, 2008
Hi all,
I have set up two server and also created linked server between server1 to server2
I could select from there just fine but when i try to run tirgger on table server1 which updates in server2 it gives me error following:
OLE DB provider "SQLNCLI" for linked server "Server2" return message "No Transaction is active"
MSG 7391, level 16, state 2, Procedure servertrigger, line 34
the operation could not be performed because OLE DB provider "SQLNCLI" for linked sever "SErver2" was unbale to begin a distributed transaction.
I have configured on both server exactly same:
with all the option:
MSDTC > Security Configuration:
Network DTC Access > TRUE
Allow Remote Clients > TRUE
Allow Remote Administration > TRUE
Allow Inbound > TRUE
Allow Outbound > TRUE
Mutual Authentication Required > TRUE
Enable Transaction Internet Protocol (TIP) Transactions > TRUE
Enable XA Transactions > TRUE
Account: NT AuthorityNetworkService
on both server..
On server2 i tried remote proc trans to on and off but it did not help.
What am i missing please Help!!!!!!!
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Mar 18, 2008
Hi,
We got this error frequently "
Commit of internal MSDTC transaction failed: Result Code = 0x8004d019
How to solve this issues.
Regards,
S.Balavenkatesh
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Oct 19, 2006
Hi all
I got the error below after run the query:
INSERT TABLE1 -- ran at SERVER1
EXEC [SERVER2].DB2.dbo.spInformation
@VR_STARTSHIFT = '10/10/2006 06:00:00',
@VR_INCDATE = '10/10/2006 14:00:00',
@VR_STATION_ID = 221
Server: Msg 7391, Level 16, State 1, Line 1
The operation could not be performed because the OLE DB provider 'SQLOLEDB' was unable to begin a distributed transaction.
[OLE/DB provider returned message: New transaction cannot enlist in the specified transaction coordinator. ]
OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionJoin::JoinTransaction returned 0x8004d00a].
Server1 has a linked server to Server2 (this linked server is working because i can run the SP without the insert).
The Server1 is under WIN2K Server and Sever2 is under WIN2003
The MSDTC is installed and is running in both servers.
How can I fix that?
Thanks in advance
Manuel Rodrigues
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Oct 22, 2007
hi all....active/active. windows 2003 sp2. two nodes. two instances, each on a separate virtual server. my msdtc resource is in the cluster group. when i have the cluster group on one node, the sql instance that is running on the other node can't see DTC. Makes sense since the service is not up, but is this a problem? Seems strange to have a red stop sign on my dtc icon in sql management studio. I suppose I won't be able to run Distributed Transactions on that node, which kinda stinks. Wondering if anyone has seen a workaround.
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Sep 26, 2007
I have setup a trigger to update records on a linked server, the link works fine and I can query tables on the remote server. However when my trigger activates I get the following error
The operation could not be performed because OLE DB provider SQLNCLI for linked server "NHS" was unable to begin a distributed transaction.
OLE DB provider SQLNCLI for linked server "NHS" returned message
"No transaction is active"
I've followed a microsoft KB article and installed MSDTC on both servers, what else do I need to do?
Thanks
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Aug 28, 2006
HelloI had a question reagrding MSDTC usage. I know that MSDTC will enlisteach connection transactions as it's own (take ownership) andcommit/abort accordingly.However I'm not sure what would happen where I have a stored proc withinput parameters and 2 Delete commands on 2 different tables. In thiscase, would MSDTC also enforce ACID rules when 1 cmd succeeds and 2ndaborts ? In the script for the Stored Proc, there is no checking for@@ERROR value. There are just DELETE statement and a plain RETURN.thanksSunit
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May 3, 2007
Hello,
As newbie in server country I try a course example to test a distributed transaction accessing both SQL Server 2005 and Sql Server 2005 Express.
But I get an error message saying:
--->MSDTC on server is not available
I Internetted somewhere that MSDTC stands for TransactionManager service.
If I look in the 'Services' list I do not see something like MSDTC, so I think it is not installed or started.
How do I install or activate the MSDTC service?
Thanks in advange,
Henk
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Aug 9, 2006
Today we installed on MS Cluster (W2k3) and SQL Server 2000 a MSDTC Service. The installation was succesfull, but wenn we try to move the group, then it failed. Because we have only 2 Disks on the cluster one for the Quorum, the other for the Sql Server. We installed the MSDTC as a Resource on the Quorum Disk. The other Thing, wenn we start the firts node all is running on the first node, but we cannot move. Wenn we start the second node all is running on the second node, but we cannot move the Group which contain the Msdtc resource.
Who has a solution to this problem??
Thanks to all
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