SQL2000 Replication Deadlocks
Jun 1, 2007
We have an SQL2000 database server that uses merge, pull replication with about 70 clients around the country, each with their own publication. Each article in each publication is row filtered by a single condition. There are busy times of the day when all of these clients attempt to replicate within a 15-20 minute period. We have noticed the following error that is creating conflicts that are resulting in data not being transferred to the server and very long replication run times (error message is paraphrased):
The record was inserted at the client, but could not be inserted at the server. Transaction (Process ID XXX) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
Is there a way to lessen the effects of this error? How can I reduce the number of deadlocks that are occurring? We will need to be adding a great deal more clients to the system in the future; is there a way to grow the system without making the deadlock problem worse?
Any help will be appreciated!
Thanks,
Craig
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Feb 4, 2004
Is there anyway to prevent deadlocks during the snapshot replication?
I understand that you can minimize by maybe creating a couple different snapshots (mixing tables to minimize locking while snapshot is being created), but is there any other way?
Thank you
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Jul 10, 2014
We recently upgraded to sql server 2012. We have xxx-D-011 as OLTP server and yyy-D-011 as distributor server.
The log is showing deadlocks every day between application queries/updates and replication jobs.
A fragment of the log about the deadlock is included below.
2014-07-10 15:31:05.94 spid13s deadlock-list
2014-07-10 15:31:05.94 spid13s deadlock victim=process37ced3498
2014-07-10 15:31:05.94 spid13s process-list
2014-07-10 15:31:05.94 spid13s process id=process37ced3498 taskpriority=0 logused=0 waitresource=OBJECT: 8:532249001:0 waittime=357 ownerId=860304057 transactionname=SELECT lasttranstarted=2014-07-10T15:31:05.090
[code]....
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Jul 2, 2015
We have transactional replication. After creating replication, we found that many blocking and deadlocks are occurring continuously. Will it cause any blocking on publisher db.
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Jul 23, 2005
hello,also wanted to confirm which versions of sql2000 can do replication.Would be nice to have fault-tolerance via replication so as to have ahot-standby.Oskar
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Jul 26, 2007
I have a distributor setup on SQL Server 2005 (9.0.3042) and am trying to create a publication on SQL Server 2000 (8.0.2040) which receives the following error in my production environment:
Msg 8526, Level 16, State 2, Procedure sp_addpublication, Line 802
Cannot go remote while the session is enlisted in a distributed transaction that has an active savepoint.
The interesting part of this equation is that I was able to get this to work without error in my DEV (development) environment and well as my QAT (test) environment. This end result was that my distributor was SQL 2005, my publisher was SQL 2000 and my pull subscriber was SQL 2005. I have been diligently comparing our production environment to my other environment and have yet to find differences.
Has anyone else seen an error similiar to this? Any insight would be appreciated.
Thanks in advance,
Max
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May 25, 2007
I want to replicate from SQL2000 to SQL2005. I had configured distributor, publisher in SQL2000 and also subscriber in SQL2005. But so far no replication was done on SQL2005. I wonder SQL2000 (SP2) and SQL2005 replication will it work? Is it true that I should install Service Pack 3 and above in order to replicate my database to SQL2005.
Thanks
Wint
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May 29, 2006
Hello.
I will construct client application with MSDE.
I face with a difficult question.
It's in sync with SQL2000 Server and MSDE.
Client number is 5000.
I fall in a dilemma. Which do i use, Replication or to make DB Sync application ?
jongwoo
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Aug 12, 2002
I'm attemting to replicate from a SQL7 box to SQL2000.
The snapshot works fine, but it fails when it tries to push the subscription to the SQL2000 box with a trust error (I don't recall the exact message). I noticed that it fails when Enterprise Mgr is configured as: "Tools/Replication/Configure Publishing, Subscribers and Distribution", Subscriber Tab, "Impersonating SQL Service Agent". It works if I change to "SA".
This is only the case when we replicate from SQL7 to SQL2K. SQL7 to SQL7 works fine with "Impersonating". Has anybody seen this behavior? Any workarounds, other than using SA?
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Aug 12, 2002
I'm attemting to replicate from a SQL7 box to SQL2000.
The snapshot works fine, but it fails when it tries to push the subscription to the SQL2000 box with a trust error (I don't recall the exact message). I noticed that it fails when Enterprise Mgr is configured as: "Tools/Replication/Configure Publishing, Subscribers and Distribution", Subscriber Tab, "Impersonating SQL Service Agent". It works if I change to "SA".
This is only the case when we replicate from SQL7 to SQL2K. SQL7 to SQL7 works fine with "Impersonating". Has anybody seen this behavior? Any workarounds, other than using SA?
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Aug 3, 2006
Hi All,
Is there a way by which we can modify the width of a column of a table which is being replicated without touching the ongoing transactional replication? This is for MSSQL2000 Transactional Replication.
I know (and successfully tried) that we can add a column to a table and that gets propaged to the replicate database and indeed the added column gets reflected there. How to add a column? sp_repaddcolumn or Right Click on the Publication-Properties and it shows a button to Add a Column.
This is what I have tried for modifying the width of a column of a table participating in Transactional Replication from varchar(10) to varchar(100)
MH (source) -> MH1 (Replicate)
The column “col1” had width of varchar(10) and this was altered to varchar(100).
insert into MH..test_mh values(4,'abcdeabcdefff')
select * from MH1..test_mh
exec sp_dropsubscription @publication = N'MH', @article = N'test_mh', @subscriber = N'UKPBDRMTST2', @destination_db = N'MH1'
go
exec sp_droparticle @publication = N'MH', @article = N'test_mh'
go
alter table test_mh alter column col2 varchar(100) null OR
MH1..sp_help test_mh
exec sp_addarticle @publication = N'MH', @article = N'test_mh', @source_table = N'test_mh'
go
exec sp_addsubscription @publication = N'MH', @article = N'test_mh', @subscriber = N'UKPBDRMTST2' , @destination_db = N'MH1'
go
Needless to say, help would be apreciated -:)
~Mihir
However, adding a column was possible.
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Feb 10, 2004
Hi !
When trying to start a Merge Replication agent I get the following Error message:
The process could not enumerate the changes at the subscriber. 2812
The snapshot agent works fine as far as I can see.
The replication is set up between a Win2000 / SQL7 / SP 4 and a Win2003 / SQL2000 / SP 3a machine. Sqlserveragent on both machines is run as a system account.
Any tip is welcome!
Thanks
VincentJS
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Feb 20, 2006
I have a pretty big (350 gb) OLTP database that I want to replicate in its entirety. I'm concerned about the impact of taking a snapshot of it (it is processing at some level pretty much 24x7). I know on SQL2005 there is the option to initialize from backup, but unfortunately we won't be on 2005 in time.
I'm thinking of doing something like this:
Set up the distributor, publication, and subscription
Turn off distribution agent
Set the publisher to "sync with backup"
Backup the publisher, full then log
Truncate tables MSrepl_transactions and MSrepl_commands in the distribution db (I don't have any other replication going on)
Turn off "sync with backup"
Restore the full and tran log backups to new subscriber db
Create subscriber stored procs in subscriber
Start up distribution agent
I'm looking for opinions on whether it's worth going this route to avoid taking the snapshot. Data integrity is the number one priority -- if I have to do a snapshot to ensure that, I will do it.
Thanks in advance!
Mike
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Nov 17, 2006
Hi,
I am trying to setup Trans Replication with updating subscriber on sql2000. One column on few tables got data with single quote (').
How do I handle in this case? Did any one come across such case?
Can I Change default QUOTED IDENTIFIER from ' (single quote) to something else (@@@) on SQL2000?
If yes, how to do?
Thanks
mka
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Sep 17, 2006
i have sql2000 & sql2005 on the same machine. I am unable to register my localhost in sql2000, get an access denied error. How can I make my localhost use sql2000 database?
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Mar 17, 2005
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.
What do you guys think?
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Aug 13, 2002
Hi,
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.
Any help and/or suggestions would be appriciated.
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Dec 17, 1998
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?
Thanks!
ben
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Mar 5, 2001
Hi ,
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.
Can anybody throw some light on this.
Thanks in Advance
Siv
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Jul 10, 2002
I am getting the following dead lock error message writtent to the Error Log.
How do i interpret this...?
2002-07-10 11:49:52.88 spid3 Node:1
2002-07-10 11:49:52.88 spid3 KEY: 6:1531868524:1 (1e0040209980) CleanCnt:1 Mode: X Flags: 0x0
2002-07-10 11:49:52.88 spid3 Grant List::
2002-07-10 11:49:52.88 spid3 Owner:0x26429de0 Mode: X Flg:0x0 Ref:2 Life:02000000 SPID:62 ECID:0
2002-07-10 11:49:52.88 spid3 SPID: 62 ECID: 0 Statement Type: INSERT Line #: 67
2002-07-10 11:49:52.88 spid3 Input Buf: RPC Event: sp_Save;1
2002-07-10 11:49:52.88 spid3 Requested By:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-S-S SPID:58 ECID:0 Ec:(0x29f534f8) Value:0x2649f0c0 Cost:(0/0)
2002-07-10 11:49:52.88 spid3
2002-07-10 11:49:52.88 spid3 Node:2
2002-07-10 11:49:52.88 spid3 KEY: 6:1695345104:1 (ffffffffffff) CleanCnt:1 Mode: Range-S-U Flags: 0x0
2002-07-10 11:49:52.88 spid3 Grant List::
2002-07-10 11:49:52.88 spid3 Owner:0x26450f20 Mode: Range-S-U Flg:0x0 Ref:1 Life:02000000 SPID:58 ECID:0
2002-07-10 11:49:52.88 spid3 SPID: 58 ECID: 0 Statement Type: INSERT Line #: 250
2002-07-10 11:49:52.88 spid3 Input Buf: RPC Event: sp_IPAQManagerFetchFilterDetail;1
2002-07-10 11:49:52.88 spid3 Requested By:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-Insert-Null SPID:62 ECID:0 Ec:(0x3bb5f4f8) Value:0x2649e040 Cost:(0/2340)
2002-07-10 11:49:52.88 spid3 Victim Resource Owner:
2002-07-10 11:49:52.88 spid3 ResType:LockOwner Stype:'OR' Mode: Range-S-S SPID:58 ECID:0 Ec:(0x29f534f8) Value:0x2649f0c0 Cost:(0/0)
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Oct 27, 2004
Hi,
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
Thanks for any help.
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Feb 16, 2004
Hi folks,
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
respectively. Any help would be welcome.
Thanks in advance,
Don
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Sep 16, 2007
hi,
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?
Any ideas?
Thx
Sri
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Jul 23, 2005
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
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Jan 13, 2006
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
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May 13, 2008
i am in the process of Migrating SQL 2000 to my new SQL2000 server i want to know the what would the best way for me to migrate one SQL server to another SQL server on the same network and rename the new server to the old server and bring it up for use in our ecommerce website.
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Jan 17, 2008
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."
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Jul 25, 2002
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.
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Oct 10, 2000
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!
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Aug 12, 1998
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.
Thanks
Kalyan
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Feb 21, 2005
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:
Code:
recordset.open "sql statement", connection, adOpenKeyset, adLockOptimistic
etc etc
recordset.addnew
etc
recordset.update
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.
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Apr 21, 2006
Lock:Deadlock Chain
Exchange
1
16325
2006-04-21 09:20:18.560
Parallel query worker thread was involved in a deadlock
0
Is the process I am running deadlocking with Exchange Server?
The data above is from Profiler.
Thanks
Lystra
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