I have one situation. I need to find out the processes which are all in deadlock state. I my figure out that SQL server maintains the process details in sysprocesses table.
Can any one please help me, Whether this is the table which contains deadlock details. If not where are they stored and How to kill that process ?
We have around 5 SP’s which are inserting data into Table A,and these will run in parallel.From the temp tables in the SP,data will be loaded to Table A. We are getting deadlock here.No Begin and End Transaction used in the stored procedure.
I have two store rpcedure as shown bellow, When I run first dt_deadlock2 and then dt_deadlock1 deadlock happend and dt_deadlock1 is discarded by SQL server giving the deadlock message. What is the reason for it ?
CREATE PROCEDURE [agcdb].[dt_deadlock2] AS BEGIN TRAN UPDATE t1 SET i = 99 WHERE i = 9 WAITFOR DELAY '00:00:10' Select * from t1 COMMIT GO
CREATE PROCEDURE [agcdb].[dt_deadlock1] AS BEGIN TRAN UPDATE t1 SET i = 11 WHERE i = 1 COMMIT GO
We just went live today with a production SQL Server 2005 databaserunning with our custom Java application. We are utilizing the jTDSopen source driver. We migrated our existing application which wasusing InterBase over to SQL Server. To minimize the impact to ourcode, we created a stored procedure which would allow us to manage ourprimary key IDs (mimicing the InterBase Generator construct). Nowthat we have 150+ users in the system, we get the following errorperiodically:Caused by: java.sql.SQLException: Transaction (Process ID 115) wasdeadlocked on lock resources with another process and has been chosenas the deadlock victim. Rerun the transaction.atnet.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnos tic(SQLDiagnostic.java:365)at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(Td sCore.java:2781)at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCor e.java:2224)at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(T dsCore.java:633)atnet.sourceforge.jtds.jdbc.JtdsStatement.executeSQL Query(JtdsStatement.java:418)atnet.sourceforge.jtds.jdbc.JtdsPreparedStatement.ex ecuteQuery(JtdsPreparedStatement.java:696)at database.Generator.next(Generator.java:39)Here is the script that creates our stored procedure:USE [APPLAUSE]GO/****** Object: StoredProcedure [dbo].[GetGeneratorValue] ScriptDate: 06/12/2007 10:27:14 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOCREATE PROCEDURE [dbo].[GetGeneratorValue]@genTableName varchar(50),@Gen_Value int = 0 OUTASBEGINSET TRANSACTION ISOLATION LEVEL SERIALIZABLEBEGIN TRANSELECT @Gen_Value = GENVALUE FROM GENERATOR WHEREGENTABLENAME=@genTableNameUPDATE GENERATOR SET GENVALUE = @Gen_Value+1 WHEREGENTABLENAME=@genTableNameCOMMIT;SET @Gen_Value = @Gen_Value+1SELECT @Gen_ValueENDThis stored procedure is the ONLY place that the GENERATOR table isbeing accessed. If anyone can provide any guidance on how to avoidthe deadlock errors, I would greatly appreciate it. The goal of thisstored procedure is to select the current value of the appropriaterecord from the table and then increment it, ALL automically so thatthere is no possibility of multiple processes getting the same IDs.
Here's a really weird one for any SQL Server gurus out there...We have observed (SQL Server 2000) scenarios where a stored procedurewhich(a) begins a transaction(b) inserts some rows into a table(c) re-queries another table using a subquery which references theinserted table (correlated or not)will deadlock itself at point (c), even when it is the only task onthe server.[I use the term 'deadlock' because I can't think of anything elseappropriate, even though, as stated, this is the ONLY task executing,so this isn't a classical deadlock situation]A typical deadlocking scenario would be (assume insert_table is thetable into which some rows are being inserted)begin transactioninsert insert_table(col....) select (col....) from some_other_table/* this following query will deadlock and never complete */select some_other_table.colfrom some_other_tablewhere not exists (select *from insert_tablewhere some_other_table.col = insert_table.col )Whereas if the offending second query in the sequence is rewritten asa joine.gselect some_other_table.colfrom some_other_tableleft join insert_tableon some_other_table.col = insert_table.colwhere insert_table.col is nullthe query will not deadlock.If the subquery is an aggregate function, a deadlock will also notoccur.If the transaction is committed prior to executing the blocking query,then it will not block (hardly surprising; if it did, there'd be majorproblems with SQL Server!).Note that this is a canonical case of a much more complex SP, and thatsimplified test cases often will not deadlock; you need a significantamount of data, typically 30,000 rows or more to see the problem. Theblocking query is, in real life, used to drive a subsequent tableinsert operation, but this is not relevant to the problem.We conclude that there is some problem, possibly involving cataloguecontention, if a temporary table must be created in a subquery withina transaction in a stored procedure, and if the subquery involvesreferences to a table for which locks have been acquired.Note that the lock timeout will never trigger and a deadlock victim isnever chosen, presumably because the deadlock occurs entirely withinthe same SPID.Locking hints and transaction isolation level setting does not affectthe result. Note also that the exact same queries, executed as a TSQLbatch, do not deadlock; you must place them in a stored procedure.Recovery mode for the database is SIMPLE, and the problem is portableacross databases; it can also be exhibited with MSDE/2000, and isindependent of whether or not the database server is the local machineor not.Has anyone else experienced this problem and/or know of a workaround,other than those mentioned here?. It does look awfully like a bug withSQL Server, since a single task should never be able to deadlockitself, surely.
I'm having a deadlock issue with a SQL Express database and a stored procedure call that ends up adding rows to three different tables, with the following basic heirarchy:
[Top] | +-----[Mid] | +------[End]
This was originally setup with auto-generated keys at each level, and the psuedo code for the stored procedure that's being called is basically:
begin transaction
insert into TopTable values from openXML
select @topID = scope_identity()
insert into MidTable values from openXML and @topID
insert into EndTable values from openXML and (select ID from MidTable that was just inserted)
commit transaction
Using the profiler there are a few places where the deadlocks occur between the 2nd and 3rd insert, it's always an index lock on the TopTable primary key or the MidTable primary key. The deadlock even occurs if the 3rd insert is taken out. We've tried changing from using autogenerated values to using natural keys, but have a very similar deadlock. Because time was short, we put an application lock in for the production code - it fixes it but testing shows it won't scale very well. The only two other things we've been able to get to work is putting a table lock on each table, or by using natural keys and relaxing the foreign key constraints. The table lock is a no-go because an SSIS package needs to read from the data periodically, and relaxing of the foreign key constraints has it's own problems - though that is where we're currently leaning if we can't come up with some other solution.
My collegues and I have been searching out the issue and working on the problem off and on for the last several days, but we're still a bit stuck. Is there something we've missed? Any pointers to a possible solution?
Following is the deadlock graph data from one of the deadlocks:
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 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.
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 open up the SQL Server Agent Job window, and I can't see details under the General, Steps, Schedules, or other tabs unless I am running SSMS directly on that server. So much for remote management, eh? Anybody else experiencing this problem? Anybody else notice that jobs may fail to complete correctly without raising any errors or logging any issues? Anybody else remember when, a year ago, SQL Server was a good product? Anybody think Microsoft is listening? Anybody? Buehler? Buehler?
Hi everybody,I'm installing a network monitoring tool (OpManager). Duringinstallation I reached the following step: Configure the SQL Serverdetails.Host Name: ???Port: 1433Database Name: xxxUser Name: ???Password: ???I don't know which host name I need to put in and also I don't knowwhich user name and password is required.Please can anyone help me with this.Thank you!
We've got a 3rd party application that periodically runs SQL commands throughout the day. We've been getting issues with this application showing a sql error:
Transaction (Process ID 71) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
In checking the processes on SQL Server, there were a lot, and process ID 71 was actually hitting a completely different database.
Is there a way to streamline how SQL Server handles processes, and what's the limit at any given time?
An application that i wrote (that interacts with SQL Server 2000) is causing deadlocks on the server. i have no direct access to the server, but the user have sent me a server trace.
Having very little experience with SQL Server 2000, all that i learn from the trace is that, well, there is a deadlock, but i had already known that beforehand.
What other useful details can be interpreted from the trace above? How can i obtain information like the specific statement(s) which cause the deadlock, etc?
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.
I'm investigating my production server because there appears a deadlock every day. So, in SQL Profiler, I use the the Deadlock graph to capture the trace in a file.
When I click on the textdata to see the graph an error appears: - Failed to initialize deadlock control. Cannot find process victim in process list.
I also get the following error from another deadlock: - Failed to initialize deadlock control. Object reference not set to an instance of an object.
I stopped my trace, so this can not be the problem.
Does anybody knows why I can't see the graph?
I also captured the trace in a table and then used the following query to see it in xml: select convert(xml,textdata) from TableName
I have a framewrok that runs tests and keeps updating the status of the tests to the DB. They are approx 20 tests whose status will be updated simultaneously. Recently i have seen the follwoing error
{"Transaction (Process ID 84) was deadlocked on lock | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction."}
I has created a SSIS FTP Task Programatically for Receiving Files. I have written code for Transfering data from FTP to my local machine. it is working fine. i need to log the details of the file transferred like file name, file size it to database table.
can any one help me to solve this...... its very urgent please.....
I have created a linked server using my local SQL2005. The linked server can be seen as a linked server, but the database can not been expanded to see the tables, stored procedures, views, and other details regarding the linked server. The only method that I have found that will allow me to see all the details is to use XP's Remote Desktop Connection to access the database. Has anyone else experienced this problem, if so, how did you resolve it?
We're planning to install a Server 2005 Failover Cluster and I'd like to find more information about licensing, etc. Basic questions:
- What is the best O.S. to run? Win 2003 or the new 2008? And what version (datacenter, enterprise)? - Since I'm going to use 2 machines, will I have to pay for 2 licenses (sql and windows - two lic. each)? Or just 1 license, since just 1 machine will be the active server?
This is for some web applications, so, web environment.
Below query. its getting more time to exec and got deadlock. So, query to avoid deadlock.
SELECT m1.Value AS InterfaceName, m1.MessageDateTime, m2.GroupId, COUNT(mError.Id) AS ErrorCount FROM ( SELECT m1.Value, MAX(m1.MessageDateTime) as MessageDateTime FROM Message m1 WHERE m1.TypeId = 9 AND (m1.Value LIKE 'F02' ) GROUP BY m1.Value
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 =)
I have came across a table in SQL server 2000 which named 'Order Details' in the sample 'Northwind' database which is available with the product. Am using the eval version . Generally no table name exist with a 'space' between the words. But the table 'Order Details' exist in the Northwind sample database.
Due to the naming convention i can't run sql queries on that. Is anyone aware of this type of issues.
We have a licensed version of VS2005 and we are developing commercial C#.net mobile applications targeted for Pocket PC 2003, Windows CE etc.
We are currently making use of System.Data.SqlServerCe.dll and are using the Sql Server CE for storing and retrieving information required for the application. We use this information and send it to our hosted web server for processing.
We use NSIS installer to develop the installer for mobile application. Can we make use of the Sql Server CE CAB files (sqlce30.dev.ENU.ppc.wce4.armv4.CAB) to install or should we only use the Sql Server CE dlls that are mentioned in the REDIST.txt?
We would like to know if we would be in agreement with the EULA if we make use of the CAB files for installation instead of the direct dlls.
Dead lock is coming in select query in application because of index. It is identified after enabling trace in database and identified by reading deadlock xml file. After index removal, deadlock is not coming in same query. But it is affecting query's performance slightly. Is it correct way to remove index if dead lock is coming because of index?
There are a series of traces of transactions for essentially the same units of work. Each includes a retrieving the same table "Select" from the database. The first 4 transactions ran concurrently. The last one ran about 7 minutes later with no other concurrent transactions.
The elapsed times for the database accesses for each of the first 4 is significantly higher than the last one. Can you think of any database optimazation that might improve this?
Are there any utilities available than can be used for stand-alone testing of SQL Server database performance? E.G. they would measure response time for reading/writing large/small amounts of canned data once/multiple times with concurrent/nonconcurrent access.
SQL Server Database is on 2000.I am not sure about the ISOLATION level in the Java code.
Basically I am new to SQL Sever....Please ans the above questions and provide me the direction to proceed on these questions
I am replicating a couple of SQL2K databases via transactional rep and remote 2K distributor to 1 SQL2K5 database.
I want the distributor to email me when/if any of the agents fail etc. In order to set this up, I think that I need the SQL Server service to use a domain account (from error messages that I have been getting). It is currently using a local system account (it was a test box in a previous life).
I have tried this briefly, and found that it lost the publisher details in the replication monitor. Can anyone tell me what the implications for changing the SQL server service user and password are? Am I going to have to tear down and rebuild replication? The SQL Server Agent is fine - I am trying to get the two services in sync.