I am getting quite a few deadlock errors where both sessions are
trying to execute sp_execsql according to the the trace information in
the error log (see below). The database is being asscessed by an
application written in .NET, as well as a few people using Query
Analyzer. This seems to be happening relative randomly - can't pin it
to any specific circumstances. Any thoughts would be appreciated.
RID: 8:1:617:37 CleanCnt:1 Mode: X Flags: 0x2
Grant List 1::
Owner:0x3738dbe0 Mode: X Flg:0x0 Ref:0 Life:02000000 SPID:55
ECID:0
SPID: 55 ECID: 0 Statement Type: CONDITIONAL Line #: 47
Input Buf: RPC Event: sp_executesql;1
Requested By:
ResType:LockOwner Stype:'OR' Mode: S SPID:52 ECID:0 Ec:(0x4AC4D570)
Value:0x23297b80 Cost:(0/12C)
Node:2
RID: 8:1:267:91 CleanCnt:1 Mode: X Flags: 0x2
Grant List 0::
Owner:0x3efae340 Mode: X Flg:0x0 Ref:0 Life:02000000 SPID:52
ECID:0
SPID: 52 ECID: 0 Statement Type: CONDITIONAL Line #: 115
Input Buf: RPC Event: sp_executesql;1
Requested By:
ResType:LockOwner Stype:'OR' Mode: S SPID:55 ECID:0 Ec:(0x483FB570)
Value:0x37c0e060 Cost:(0/138)
Victim Resource Owner:
ResType:LockOwner Stype:'OR' Mode: S SPID:52 ECID:0 Ec:(0x4AC4D570)
Value:0x23297b80 Cost:(0/12C)
Is there a way to send out an email woth deadlock information (victim query, winner query, process id's and resources on which the deadlock occurred) as soon as a deadlock occurs in a database or at instance level?I currently has trace flag 1222 turned on. And also created an alert that send me an email whenever a deadlock occurs. but it just says that a deadlock occurred and I log into sql server error log and review the information.
I received the following error message when run the query,
Server: Msg 1205, Level 13, State 61, Line 1 Transaction (Process ID 61) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
I have some ASP.NET C# code which executes a stored procedure in SQL Server via the SqlCommand and SqlConnection classes. One of the stored procedures that gets executed is giving the error: "Transaction (Process ID 272) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction." This only happens occassionally. Is there a way to get around this in my ASP.Net application? One thing I tried is ensuring that no 2 users entered the stored procedure concurrently:object synclock = new object() ; lock (synclock) { // execute SQL stored procedure ... } This did not solve the problem, and I'm not even sure if that is the correct implementation to ensure sequential execution of the stored procedure.
guys, I have a stored procedure which gets called by ASPX page and it inserts, updates data into different tables. originally, I had a issue that if error occured, it would not rollback all the data so i used transaction around it. now, once in a while I am getting this error "System.Data.SqlClient.SqlException: Transaction (Process ID 181) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction". I don't know how this error occurs and how do I prevent it. please help. transaction is as follow. BEGIN TRY BEGIN TRANSACTION // t-sql codes to insert update multiple tables COMMITEND TRY BEGIN CATCH if (@@TRANCOUNT > 0) --error ROLLBACK declare @errSeverity intselect @errMsg = ERROR_MESSAGE(), @errSeverity = ERROR_SEVERITY() RAISERROR(@errMsg, @errSeverity, 1) END CATCH
I used veritas to backup MsSQL 2000 database server but I often encounter backup fail error due to the deadlock in the database. May I know how to reduce this problem?
I heard there is a method to control the database deadlock timeout. If we set a lock timeoutvalue, will it reduce the chance of deadlock to happen? Is there any disadvantage of doing that?
If I were not wrong , we can set the lock_timeout value using the syntax "SET LOCK_TIMEOUT milliseconds" Is that true? But Do we have to have to run this command for every database? What is the normal milliseconds value?
I have a Stored Proc that is called by a SQL Job in SQL Server 2000. This stored proc deadlocks once every couple of days. I'm looking into using the @@error and try to doing a waitfor .5 sec and try the transaction again. While looking around google I've come across a few articles stating that a deadlock inside a Stored Proc will stop all execution of the stored proc so I will not be able doing any error handling. Is this true? Does anyone have any experience that could help me out?
I know the best solution would be to resolve why I get a deadlock. We are currently looking into that but until we can resolve those issues I would like to get some type of error handling in place if possible.
I want to set an alert for a specific table whenever an event hascaused a deadlock to occur on the table.I understand how to set up an alert. But I don't know which errornumber to use for the New Alert error number property for a deadlock.Or how to specify a deadlock on a specific table.Thanks,DW
We have lately experianced a strange problem with our SQL Server 2005 x64 (SP2) that is NOT consistent but when it happens it happens on the same time.
Almost every night at 03:30 one of our databases (not all) seems to be down or locked. When i have a look at the order table in this database I can see that we have stopped recieving orders after 03:30. Two hours later (05:30) I can see the following error each minute in the error log until we reboot the server:
All schedulers on Node 0 appear deadlocked due to a large number of worker threads waiting on LCK_M_IS. Process Utilization 0%%.
As we have a maintenance job running at 03:30 it feels like this is the problem. The job performs the following tasks: "Check Database Integrity -> Rebuild Index -> Reorganize Index"
When i look at the history of the job it looks like it's not completed and only the "Check Database Integrity" task was runned. No error message here either.
Also when i look in the error log i can see that the Maintenance job is started but never ended. Worth to notice is that I get the follwoing info in the log after the start-message:
Configuration option 'user options' changed from 0 to 0. Run the RECONFIGURE statement to install.
Also, when i run this job manually daytime it works great!
Anyone having any idees on this? Is it possible to track this even more? I'm tired of restarting the server 03:30 in the morning =)
Error: The Script returned a failure result. Task SCR REIL Data failed
OnError - Task SQL Insert Error Msg Error: A deadlock was detected while trying to lock variable "System::ErrorCode, System::ErrorDescription, System::ExecutionInstanceGUID, System::StartTime, User::FEED_ID, User::t_ProcessedFiles" for read access. A lock could not be acquired after 16 attempts and timed out. Error: The expression ""EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"" on property "SqlStatementSource" cannot be evaluated. Modify the expression to be valid.
Warning: The Execution method succeeded, but the number of errors raised (4) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
And how did I get 4 errors? - I only set my script task result to failure
In a high traffic environment, deadlocks eventually occur as number of data processes increase. How can deadlocks be avoided, minimized and resolved. Please kindly provide scenario examples and samples of T-SQL code. Thanks much.
Iam trying to bcp a table(residing on my prod server to my local machine from command prompt) .Actually the table iam trying to bcp has heavy updates and selects, from users (70 users). The users complain that system becomes slow.Is it got anything to do with my trying to bcp the mentioned table(table has 170,000 records).Also whenever i try to bcp this table, only after being chosen as the deadlock victim by Sql server,for 3 or 4 times that iam able to bcp the table.
Any help regarding this will be very much appreciated TIA kinnu
I am unable to control the granularity of locks in our queries. We are running queries through MTS and are getting deadlocks.
The batch includes two inserts and one select query - all are hitting on only one table. This table has a unique clustered and a unique nonclustered index as well as a primary key.
Within the batch, I have given a table hint to set transaction isolation level to READCOMMITTED, ROWLOCK for the insert statements, like this
INSERT INTO ib_price with (READCOMMITTED,ROWLOCK)........
and the same for the Select statement.
SELECT retail_price, price_status_id FROM ib_price with (READCOMMITTED,ROWLOCK)
When I run sp_lock on the spid, I get output indicating that SS7 is placing a IX lock on the table. I'm pretty sure this is a big contributor to the deadlock.
I get the deadlock when I try to run more than one client with similar insert parameters.
How can I control the granularity to just rowlocks?
I am getting deadlock running a stored procedure from two machines. Looking at the error log (generated using trace flag 1204 and 3605), it seems the deadlock is on a key. But what I fail to understand is how come sql server granted exclusive lock on the key to both connections. The grant list shows that lock with Mode X is granted to both connection.
Can anyone help me resolve deadlock with following text
Parallel Query worker thread Involved in deadlock.
I am particularly interested in resolving details of above mentioned line,as I started getting dead lock more frequently now and when I look into query involved blocking and victim I see nothing that can cause deadlock they are update insert and select statement which were fine for long and all of sudden started giving problem.
Thanks in advance, for any knowledge share my mail id scraval@hotmail.com
Hi, When many users run some stored procedures I 've got some deadlocks. How to avoid that? We run large stored procedures code which are using sometime the same table. What is the best way for using the transaction isolation level, fillfactor indexes, procedure cache configuration ...etc to avoid that.
In addition, I am using MTS and sometimes the Tempdb is also locked, is it a Microsoft bug (again) ?
We had a dead lock every night 9:00pm. I found out Server/Current Activity --Object Locks : The error log showing error 17824, severity:10, state 0 DNCC TRACEON 208, SPID 28 DBCCTRACEOFF 208, SPID 28 In current activity --object locks and reapetedly showing "tempdb.dbo.sysobjects/sysindexes/syscolumns" 28:sa.master.dbo /INSERT /SQL_servername (MS SQLEW)
Sorry for bombading the forum with all these questions, but i am relatively new to sql 2000.
I am getting dead lock on the following procedure.
important background information 1. this is a multi user web-based call centre application 2. this procedure loads up a new contact based on priority
I see no reason how a dead lock could occur. does any one have any idea. could it be something else that is locking up resource used by this procedure?
CREATE PROCEDURE topcat.getNewContactInfo ( @contact_id int ) AS BEGIN begin transaction
declare @id int
set @id = (SELECT TOP 1 _id FROM class_contact WHERE (status IS NULL OR status='New Contact' OR status = 'No Connect' OR status='callback') AND (checked_in IS NULL OR checked_in <> 1) AND (callback_date >= (getdate() + 1) OR callback_date IS NULL ) ORDER BY priority DESC)
UPDATE class_contact SET checked_in = 1 WHERE _id = @id SELECT TOP 1 * FROM class_contact WHERE _id = @id
commit END GO
wat i dont' get is that, this procedure only has one update statement, this is the only statement that could possibly hold a lock on another resource (i think) , i can't see how a dead lock can happen in this case since this procedure doesn't hold up 2 resources at a time.
Using SQL Server 2000 SP3a, I run the following in 2 query analizerwindows on the Northwind database, the second one always gets thedeadlock Msg 1205:Window 1:declare @cnt intselect @cnt = 5while @cnt > 0beginbegin transactionselect * from orders (updlock) where employeeid = 1update orders set employeeid = 1 where employeeid = 1waitfor delay '00:00:03'commitselect @cnt = @cnt -1endWindow 2:declare @cnt intselect @cnt = 5while @cnt > 0beginbegin transactionselect * from orders (updlock) where employeeid = 1 and customerid ='ERNSH'waitfor delay '00:00:02'commitselect @cnt = @cnt -1endThe query in the first window gets 123 rows and places update locks onthem, then updates them and commits. The query in the second windowgets a subset (about 5) of the results that window 1 gets also tryingto place update locks on the same rows. Shouldn't the query in window 2just wait for the transaction in window 1 to finish? why would itdeadlock?you can also get rid of the delay in the second window and it willdeadlock faster.thanks in advance.Eugene
Hi.create table joe(c1 integer not null, c2 integer not null)Two sessions:Session 1:BEGIN TRANinsert into joe (c1,c2) values (1,2)Session 2:BEGIN TRANinsert into joe (c1,c2) values (3,4)Session 1:select * from joeSession 2:select * from joeOne of the sessions gets a deadlock victim message.thanks,Joe
I have a table that every 30 minutes needs to be repopulated fromanother table that is recreated from scratch just before.What I did was this:CREATE PROCEDURE BatchUpdProducts ASbegin transactiondelete productsinsert into productsselect * from productsTempcommit transactionGOThis takes about 30 seconds to run. I tried it doing it with a cursor,row by row, but it took like 30 minutes to run instead. The problemis with the fast approach is, once in a while I get a deadlock errorin different areas trying to access the products table. Using SQLServer 2000 by the way.Any ideas?
Here is the exception I am getting, any idea why this might be happening:
Exception: ThisMethod is done: let this go: Exception: Transaction (Process ID 74) was deadlocked on lock | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction. Stack Trace: at
Hi, I need to trace deadlock, one of article was mentioning “QL Server Profiler's Create Trace Wizard to run the "Identify The Cause of a Deadlock" for SQL Server 7.0, is there any way I can do this in Sql Server 2000?
Hi Guys. I just want to ask some insights on SQL Server Deadlock and what is the best way to handle deadlock in asp.net? Or something like a Try... Catch.. statement to handle the error? Please advice. Thanks in advance.
I have set up an alert to detect when Page Deadlocks rise above 0. Overnight I have DTS packages populating SQL Server and various other jobs (Cognos Cube Builds etc.). My alert detected a Deadlock during the night but all of my processes completed fine. My problem/misunderstanding is that my alert is still popping up every 5 mins saying there is a Deadlock yet there is nothing running or no-one accessing SQL server and I cannot see any trace of the Deadlock in the Current Activity. Is this normal or is it a bug?
Hi, Can I use the Create Trace Wizard to trace the cause for a deadlock....I have created a new Trace , so in the couse of today if I encounter a deadlock will I know....how is this indicated....Please do let me know as I am using this for the first time.....
