i have an issue regarding the following error message:
[Microsoft][ODBC SQL Server Driver][SQL Server]Transaction (Process ID ##) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
this is caused on a couple of ASP pages, which are using:
This is happening fairly frequently, which can't be a good thing, so would it be worth changing the lock or cursor types to a different one, in particular, adLockPessismistic?
Any pointers or comments would be very welcome.
This is happening on a windows server os, sql server 2000 using classic asp (.asp) pages, connecting to sql server using ado within the asp pages.
I need some help in reducing deadlocks in 6.5 I have tested with `Insert Row Locking` turned off and it reduced the number of deadlocks. What i need to know is if removing the foreign key relationships on tables reduces/eliminates Deadlocks. If any of you have any info on this please let me know.
HiI'm having a problem with deadlocks in a table in SQL server whentrying to update it through Biztalk 2004. There is no problem when Iuse the same Biztalk solution to update a similar dummy table, butwhen I try updating the original table in the production database,some transactions are updated successfully whereas others become thevictim of the deadlock (Transaction (Process ID 185) was deadlocked onlock resources with another process and has been chosen as thedeadlock victim. Rerun the transaction). The table that is updated isalso being used by another application that just selects rows from it.As a workaround, I have used recursion in the code that updates thetable. The function is put through a recursive loop whenever thedeadlock exception(#1205) is caught. It keeps on trying to update thetable until the updation is successful or another exception (not thedeadlock one) is caught. i.e.Bool Update_IVR(string amount, string customer_id){Try{//updation code}}Catch (exception ex){If( ex.message == deadlock message){Bool succ =Update_IVR (amount, customer_id) //recursionReturn succ;}Else //error handling code}After introducing this code, the problem did not occur for the next13000 transactions. Then I got the error again four times along with atimeout error (Timeout expired. The timeout period elapsed prior tocompletion of the operation or the server is not responding). Howeverfor the next 17000 transactions (to date) this error has not showedup.ThanksHasan
Any help with deadlocks ? I keep getting deadlocks..and can't figure out why.... version of sql server: 8.00.2040 (SP4). [Microsoft][ODBC SQL Server Driver][SQL Server]Transaction (Process ID 73) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
Got aprivate webserver with two main sites which generate maximum 800.000 pages vieweved a day...
these are running ASP and SQL Server 2000
FREQUENTLY, SQL Server doesn't respond and seems to be blocked, wich cause all my pages to be unreachable by the fact that my header file open a SQL connection in every page.
I've read a lot of documentation about SQL blocking or deadlocking but shame on me i don't really understand how to easily identify the reason of blocking and far more important, still don't kow the way to STOP these.
Is there a way to set a global parameter to STOP any SQL request wich is longer than 10 seconds let says... ?
I tried SET LOCK_TIMEOUT timeout_period but it seems we have to put it in EVERY transaction... not simple. Further more i tried it and it generated me a lot of errors (example : returning -1 for recordcounts after a request)...
Any help for a newbie SQL user to avoid these blocks ?
Have any seen Insert statement deadlocking itself ? Most of the articles published by Microsoft says to change the transaction isolation level from Read Committed to Read Committed Snapshot.Below is the XML file on the deadlock
I am not sure if i am looking correctly at the deadlocks but i see deadlocks between two select statements.These statements are being run through an application. Below is the table schema from where the select is being performed
CREATE TABLE [dbo].[CMS_LOCKS7]( [PARENTID] [int] NOT NU, Â --we have a non clustered index on this column [CHILDID] [int] NOT NULL, --we have a non clustered index on this column [ISMEMBER] [int] NOT NULL, -- we have a non clustered index on this column [ORDINAL] [int] NULL,-- we have a non clustered index on this column
Our system is reasonably complex with a lot of non-trivial stored procedures. As the load on our DB increased we're now getting more and more deadlocks (10 per day or so from about a million stored proc executions).
We try to avoid transactions where we can, and we do attempt to optimse stored procs to steer clear of deadlock conditions, but with the sheer number of stored procedures we can't possibly avoid all deadlock conditions.
One solution I'm considering is to re-run stored procs that failed because of a deadlock. In the .net code we'll run the stored proc, check for a deadlock error and if one happened, wait 100ms and try again.
we have a production inviremont that is running for about 10 months. Since a couple of weeks we are having problems with "Deadlocks".
This cant be due to an increase in data size on the tables that are having the issues because these are cleaned in the same transaction that populates them.
These tables are used to store temporary data that the production system needs to calculate the correct price for any given order. This transaction takes between 0.5 to 1 second to commit.
We are running on a dual processor machine with 1 Gb of RAM with SQL Server 7 - sp 3, Windows NT 4 sp 6, Microsoft Transaction Server.
In all our queries and stored procedures we use the optimizer hints (nolock) for select statements and (rowlock) for updates or deletes.
Is there any way to totally avoid deadlocks. In some critical applications we have removed transactions entirely, counting on other means to maintain database consistency. We still get deadlocks in this area. These are mainly inserts, and the only thing I can think is that updates to the indexes are causing multiple page locks which result in deadlocks. Is this true?
Will deadlocks be eliminated in 7.0 with row level locking for this situation? Or will index page splits still cause a possibility of deadlock contention?
I have a problem with a SP in 6.5. When i try to run a Stored Proc which is a simple select statement dumped into a temp table in a particular database, I lock other users who are tring to log into other databases some in tempdb database. When i try to kill the process the rollback takes almost 45 mins or so..till then no one can log on to the server.
The SP works fine when no one is logged into the Great Plains server. One more thing i observed is that, the SP when run results on a deadlock only when the owner is a user. If the owner is DBO it works fine.
I've got a deadlock problem. The log below has been generated. The problem is that during one day, I have more than 300 deadlocks like it. Before, the were not so many deadlocks. During past year, the number of users has grow (from 100 before to 500 or 700 now)
*** Deadlock Detected *** - Requested by: SPID 360 ECID 0 Mode "S" - Held by: SPID 113 ECID 0 Mode "S" Index: aaaaa_PK Table: TABLE_1 Database: MYDB == Lock: KEY: 22:325576198:1 (ff009ae5078d) - Requested by: SPID 113 ECID 0 Mode "S" - Held by: SPID 374 ECID 0 Mode "X" Index: aaaaa_PK Table: TABLE_1 Database: MYDB == Lock: KEY: 22:325576198:1 (ff009ae5078d) - Requested by: SPID 374 ECID 0 Mode "IX" - Held by: SPID 360 ECID 0 Mode "S" Table: TABLE_2 Database: MYDB == Lock: PAG: 22:1:2428 == Deadlock Lock participant information: Input Buf: S E L E C T the_rest_of_the_query SPID: 360 ECID: 0 Statement Type: UNKNOWN TOKEN Line #: 1 Input Buf: s p _ e x e c u t e 8 Input Buf: s p _ c u r s o r 8À B 8 8f ç @ Table I Input Buf: S E L E C T the_rest_of_the_query SPID: 360 ECID: 0 Statement Type: SELECT Line #: 1 == Session participant information: == Deadlock Detected at: ==> Process 360 chosen as deadlock victim
I have done : - rebuild indexes on all tables (fillfactor 90) - analysed memory activity
Could a lack of memory be at the origin of the problem ? Which counters in perfmon are significant for memory lack ?
Could the index fill factor could be at the origin of the problem ? At time, it is at 90 percent.
Config : Winnt4 Server, MS-SQL 7 SP4 , 2 GB of RAM , 2 x Xeon 700
I have an application built on top of a questionable DB design which requires overcomplicated selects. The application is experiencing deadlocks regularly, in some cases with only one concurrent user.
I set the trace flag 1204 but am not seeing anything in the Error.log and I initiated a trace in profiler which does not seem to show any deadlock. Despite having recreated the problem which show my browser hanging indefinitely. When I run the following queries:
SELECT spid, waittime, lastwaittype, waitresource FROM master..sysprocesses WHERE waittime > 10000 AND spid > 50
SELECT spid, cmd, status, loginame, open_tran, datediff(s, last_batch, getdate ()) AS [WaitTime(s)] FROM master..sysprocesses p WHERE open_tran > 0 AND spid > 50 AND datediff (s, last_batch, getdate ()) > 30 ANd EXISTS (SELECT * FROM master..syslockinfo l WHERE req_spid = p.spid AND rsc_type <> 2)
I get:
55860978LCK_M_XPAG: 13:1:2573
54AWAITING COMMANDsleeping sa 11499 55UPDATE sleeping sa 21499
We have a SQL 2005 transaction database server that suddenly started to issue deadlock errors last week on most of the databases on that server and a lot of timeout errors. Before that, that database server performed very well and timeouts were minimal to zero. I am not sure what changed for it to have these performance problems.
The only major change we did was to convert several varchar columns to nvarchar in several tables (as part of internationalization initiatives). We did not modify the procs from varchar to nvarchar though but would be doing that phase by phase.
There is also one proc in which we used the snapshot isolation level of sql server 2005. These are only 2 major changes done within the past 2 weeks. Would these be the cause for these deadlocks and timeouts on our web-based application?
Hi EverybodyI am new to sqlserver 2000.I know basics of locks.but i dont know how toresolve deadlock issues.I am cofusing by reading articles with 90%information and remaining 10% missing.Can any one help me which is the goodsite to learn and resolve deadlocks.Note: I create deadlock. when i try to trace deadlock using dbcc traceon(1205,3604,-1).In error log showing nothing about the deadlock.showing created traceon.........Any help would be appreciated.--Message posted via http://www.sqlmonster.com
We have a problem with a table giving us deadlock issues and we can'tfigure out why.It's a table we write to fairly often perhaps 50 times a minute. Andalso do a select of 200 rows at a time from 4 servers every 5 minutes or so.We are only keeping 48 hours worth of rows in the table which averagesat 30000 a day on a busy day.This table has 1 PK and 2 FKs plus one TEXT column which does notparticipate in the WHERE clause.We are using binded variables.We have applied the latest patch to SQL2003 server running onWindows2003. The patch is supposed to resolve deadlock issues.Anyone have any advice on how to alleviate this problem.Thanks
Morning All, Am getting the following error from a number of users and am sort of wondering where to start in terms of diagnosing the problem. If anyone could give me any pointers on where to start in diagnosing the issue I would be grateful. "System.Data.SqlClient.SqlException: Transaction (Process ID 282) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction."
I know blocks and Deadlocks are different but how related are they? Seems like when I get reports of deadlocks I always have blocks and the blocks grow as time passes.
My database has been in production for 10 months with no deadlock problems. Three weeks ago I had to restore the database and I am now experiencing several deadlocks. SQL server is suppose to handle this and kill a process to resolve the deadlock but it is not. The deadlock occures on a stored procedure which is a simple select on a table with 187 records. DBCC ran with no problems. Any ideas what might be causing this? Any why is SQL not handling? Your help is greatly appreciated!
I am conducting stress testing for my website and keep getting deadlocks with the following message when one process is adding about 100 records per second and another process is trying to access the data:
Transaction (Process ID 499) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
What do I need to do in my stored procedures to avoid this? I only have ONE stored prcoedure that locks a row while incrementing an ID value. I am not doing any other locks, so is this a SQL Server system lock?
I have a search function, which searches across many tables.
It's a pretty heavy SPROC, I'm wondering in general, what are the best way to reduce deadlocks ? Its used a fair bit, and altho I haven't noticed problems with it myself, there are definately a decent amount of deadlocks showing up in the logfiles.
I've always assumed this is something really difficult, and avoided it like the plague.
I'm going thru my application log, and just seeing what errors are popping up. I have a relatively intense search feature, thats causing alot of deadlocks.
Exception type: SqlException Exception message: Transaction (Process ID 105) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
In general, what's the best way to resolve this ?
Should I see if I can apply "WITH (NOLOCK)" to my data ?
Problems in a 2008 R2 environment, database grows quickly and deadlocks occure somtimes.When I checked the database the tables lacked completely of indexes.How can I find out which indexes that should be created and how to manage the deadlocks?
I face alot of DeadLocks in my SQL Server. the server is SQL 2000 SP3 with Windows 2000 sp4. I have all kinds of locks and i really don't understand none of them. I tried to restart the server and it didn't help - the locks id and locks objects are still there - about 15 objects. what to do?
I'm trying to diagnose deadlocks in SQL Profiler. The deadlocks weregenerated by Loadrunner scripts (stress testing) simulating applicationSQL via an ODBC DSN connection.2 things are puzzling me in the SQL Profiler traces that I have logged1) There are a large number of Lock:Timeout events but the 'locktimeout' setting is the default 'wait forever' so I dont know what istiming out.2)When say 2 distinct SPIDs are in a Deadlock Chain, they are using thesame ClientProcessId at the time of deadlock. What is theClientProcessId and is it relevant to the deadlock?Thank you in advance for any replies.
I am getting lot of deadlocks in my application. As it is very complexti avoid deadlocks at this stage of application we have done few stepsto lessen the impact.We have added retries after deadlock is capturted.We have added select * from TABLE with (nolock) wherever possible.But interestingly second step is not working. I have few simple selectstatements where i am using nolock criteria still I am gettingdeadlock victim error. Any idead why it happening. I thought as soonas I put nolock in the query it will ignore all the locks.My sp isCREATE procedure sp_Check_denomination@supply_till_idint,@product_codechar(4),@iso_currency_codechar(3),@denominationmoneyasdeclare @product_id numeric(5)select @product_id = product_id from product with (nolock) whereproduct_code = @product_codeif exists (select *from transaction_inventory TI with (nolock),product_ccy_denom PCD with (nolock)where TI.supply_till_id = @supply_till_idand TI.product_id = @product_idand TI.iso_currency_code= @iso_currency_codeand TI.denomination = @denominationand TI.product_id = PCD.product_idand TI.iso_currency_code = PCD.iso_currency_codeand TI.denomination = PCD.denominationand PCD.product_id=@product_idand PCD.denomination = @denominationand PCD.iso_currency_code=@iso_currency_codeand PCD.tradeable = 1)beginreturn(1)endelsebeginreturn(0)endGO
Hi All,I have read about deadlocks here on Google and I was surprised to readthat an update and a select on the same table could get into adeadlock because of the table's index. The update and the selectaccess the index in opposite orders, thereby causing the deadlock.This sounds to me as a bug in SQL Server!My question is: Could you avoid this by reading the table with a'select * from X(updlock)' before updating it? I mean: Would thisresult in the update transaction setting a lock on the index rowsbefore accessing the data rows?Merry Christmas!/Fredrik Möller
We've found deadlocks in the trace file that were not captured by ourPowerbuilder application. Some deadlocks are trapped or, at least,reported to the user as a db error, and others are completely silent.We've also seen evidence of strange data that would be explained byunprocessed deadlocks, although we've not yet proven that theunreported deadlocks are killing updates to the db.Putting a raiserror into various parts of the same code (and codereview) appears to prove that we are error checking after each dbupdate. That is, it looks like we're checking, and a raiserror alwaysbubbles up to the app.Can anyone shed some light on a.) How this could happen and b.) WhatShould We Do?Some of one of the traces below (with minor anotations.ThanksDeadlock encountered .... Printing deadlock information2004-11-11 10:33:57.77 spid42004-11-11 10:33:57.77 spid4 Wait-for graph2004-11-11 10:33:57.77 spid42004-11-11 10:33:57.77 spid4 Node:12004-11-11 10:33:57.77 spid4 TAB: 6:1739869265 (cbo1023p) []CleanCnt:2 Mode: X Flags: 0x02004-11-11 10:33:57.77 spid4 Wait List:2004-11-11 10:33:57.77 spid4 Owner:0x60e085e0 Mode: ISFlg:0x0 Ref:1 Life:00000000 SPID:88 ECID:02004-11-11 10:33:57.77 spid4 SPID: 88 ECID: 0 Statement Type:SELECT Line #: 1232004-11-11 10:33:57.77 spid4 Input Buf: Language Event: selectcbord.cbo1000p_item.longname as itemname,cbord.cbo4002p_itemevent.eventdate,cbord.cbo4002p_itemevent.eventstatus,cbord.cbo4002p_itemevent.unitid,cbord.cbo4004p_eventlist.itembin_intid,cbord.cbo4004p_eventlist.itemu2004-11-11 10:33:57.77 spid4 Requested By:2004-11-11 10:33:57.77 spid4 ResType:LockOwner Stype:'OR' Mode:IS SPID:84 ECID:0 Ec:(0x4F9B3A00) Value:0x4a0e9400 Cost:(0/0)2004-11-11 10:33:57.77 spid42004-11-11 10:33:57.77 spid4 Node:22004-11-11 10:33:57.77 spid4 TAB: 6:1739869265 (cbo1023p) []CleanCnt:2 Mode: X Flags: 0x02004-11-11 10:33:57.77 spid4 Grant List 2::2004-11-11 10:33:57.77 spid4 Owner:0x4de9a8a0 Mode: XFlg:0x0 Ref:742 Life:02000000 SPID:121 ECID:02004-11-11 10:33:57.77 spid4 SPID: 121 ECID: 0 Statement Type:UPDATE Line #: 142004-11-11 10:33:57.77 spid4 Input Buf: RPC Event:cbord.p_pur002_replacecost;12004-11-11 10:33:57.77 spid4 Requested By:2004-11-11 10:33:57.77 spid4 ResType:LockOwner Stype:'OR' Mode:IS SPID:88 ECID:0 Ec:(0x4F259A70) Value:0x60e085e0 Cost:(0/0)2004-11-11 10:33:57.77 spid42004-11-11 10:33:57.77 spid4 Node:32004-11-11 10:33:57.77 spid4 KEY: 6:2134298663 (cbo1000p_item):1(96006e2bf95f) CleanCnt:1 Mode: U Flags: 0x02004-11-11 10:33:57.77 spid4 Grant List 2::2004-11-11 10:33:57.77 spid4 Grant List 3::2004-11-11 10:33:57.77 spid4 Owner:0x4dc088a0 Mode: SFlg:0x0 Ref:1 Life:00000000 SPID:84 ECID:02004-11-11 10:33:57.77 spid4 SPID: 84 ECID: 0 Statement Type:CONDITIONAL Line #: 632004-11-11 10:33:57.77 spid4 Input Buf: Language Event: selectcbord.cbo1000p_item.longname as itemname,cbord.cbo4002p_itemevent.eventdate,cbord.cbo4002p_itemevent.eventstatus,cbord.cbo4002p_itemevent.unitid,cbord.cbo4004p_eventlist.itembin_intid,cbord.cbo4004p_eventlist.itemu2004-11-11 10:33:57.77 spid4 Requested By:2004-11-11 10:33:57.77 spid4 ResType:LockOwner Stype:'OR' Mode:X SPID:121 ECID:0 Ec:(0x5F719A70) Value:0x48286aa0 Cost:(0/B9654)2004-11-11 10:33:57.77 spid4 Victim Resource Owner:2004-11-11 10:33:57.77 spid4 ResType:LockOwner Stype:'OR' Mode:IS SPID:88 ECID:0 Ec:(0x4F259A70) Value:0x60e085e0 Cost:(0/0)2004-11-11 10:34:02.77 spid4
