Long Transaction
Jul 20, 2005
Hi,
I am still not very proficient in SQLServer. So apology if the
question sounds basic.
We have a script to clean old unwanted data. It basically deletes
all rows which are more than 2 weeks old. It deletes data from
33 tables and the number of rows in each table runs into few millions.
What I see in the script (not written by me :-) ) is that all data is
deleted within a single BEGIN TRANSACTION and COMMIT TRANSACTION. As
I have background in informix, such an action in Informix may result
in "LONG TRANSACTION PROBLEM". Does SQLServer have a similar concept.
Also won't it have performance problem if all rows are marked locked
till they are committed.
TIA.
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Sep 19, 2007
I'm curious what are considerations for choosing a good transaction retention time? The default SQL uses is 0 to 72 hours. With this setting I found that cleanup was taking upwards of 30 minutes (for a process that defaults to run every 10 minutes). I've read that lowering it can improve performance, and that also you don't want this running too long because of deadlock issues between this and the log reader. So how short is too short? Optimally, since the system this runs on is under heavy use I'd like to optimize this as much as possible, which makes me think that the smaller the retention the better, but is something like 1 or 2 hours too short? What are possible consequences of such a short period of time?
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Jul 23, 2005
Hi all,I would like to perform anINSERT INTO LINKEDSVR.dbo.xyz.abcSELECT ... FROM dbo.dfgwhere LINKEDSVR is a linked server on another machine. Both servers arerunning SQLServer 2000 and have the DTC running.When I run this batch from QueryAnalyzer without explicitly usingtransactions, it works well (takes about 5 sec) - however, when Ienclose it usingbegin [distributed] tran/commit tranthe query runs forever.I also tried to use the local server as linked server (loopback) but itdid not work either.Any suggestions?Thanks,Jo
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Dec 6, 2005
I just wanted to post a follow up to a message I posted some months agoabout a long running transaction that was blocking all other users...The link is belowhttp://groups.google.com/group/comp...649bee2002646a2By using the new "Row versioning" functionality of SQL 2005, itcompletely solved this problem. By reading the books online, it saysthere is a performance impact, but that the better performance of SQL2005 in general might offset it. So far this seems to be the case. justposting it here in case anyone else has the problem. The SQL command Iihad to execute to get everything working properly was:ALTER DATABASE DBnameSET READ_COMMITTED_SNAPSHOT ON;
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May 5, 2007
Is there anyone know any feature in SQL server which can detect/log the transaction which has been blocked unusually long? My idea is:
If a transaction has run for over 30 minutes, then log the following information in SQL server log:
1. State of the transaction : Blocked, Running, Sleeping
2. Time happeing
3. Duration
4. Last SQL it run
5. Blocked by which thread and info of the thread : the last SQL it run, the state of the thread.
Possibly it would be run in SQL server agent or SQL profiler has such feature, I am not sure about it. Can anyone suggest? Thanks.
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Jul 20, 2006
Hello,
I seem to be misunderstanding the way transactions work with service broker queues. We have developed and deployed a service broker application that 5 queues and a windows service for each queue on multiple servers (3 currently). Due to a last minute issue, we had to not use transactions when the services executed a recieve and I am not updating the code base to use transactions and am running into blocking issues. One of the services runs for 90 seconds (spooling to the printer) and all of the servers block on the receive operation for this queue. I thought that if I was receving messages from a single conversation, other receives against this queue would not block.
Thanks,
Jim Stallings
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Mar 30, 2007
Hello,
I'm trying to figure out why my transaction log backup is taking up to an hour to complete. I started off with a full recovery model with a Full database back up every Sunday, differential backups every Tuesday/Thursday and log backups every 5 minutes. I would have thought that the log file backups would execute much quicker because I'm backing them up more often.
Here is my backup statement, I'm hoping I've got a wrong option that you can point out to me:
BACKUP LOG [xxxx] TO [LogFilexxxxBackups] WITH NOINIT , NOUNLOAD , NAME = N'xxxx log backup', SKIP , STATS = 10, NOFORMAT
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Oct 1, 2007
We have a web-based third-party application that has both background processes and user activity requests running in the same database (SQL Server 2005 SP2). The problem is that a background process will start a long-running transaction and hold an exclusive lock on a few rows in a given table (a small table, <100 rows). The web clients need to scan this same table, but when their "select *" statements get to those locked row(s), the web client queries stall waiting for that exclusive lock to be released. This effectively brings the entire web front end to a halt because all clients must hit this table for each user action. I realize that this is the classic lock condition that multiversioning databases like Oracle, PostgreSQL, SQL Server Compact Edition, and other databases do not suffer because they don't use shared read locks like SQL Server. But since we're on SQL Server for this app, what is the way to get around this problem? Modifying the clients to use WITH (NOLOCK) is not an option... there will be major consistency issues unless the clients run in Read Committed or higher. Any ideas? We could tweak this app if needed. Does SQL Server 2008 introduce multiversioning or at least some mechanism to get around this problem? I did not see it mentioned on the Microsoft site, but maybe I missed it. Thanks in advance.
Austin
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Aug 25, 2007
How can I execute a long running transaction using something similar to the fire and forget pattern?
I intend to start the execution of a very long stored proc from within IIS. I would like to execute a sql script that will start the job and return immediately so that it doesn't hold an IIS thread.
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May 31, 2008
Hi All
I'm getting this when executing the code below. Going from W2K/SQL2k SP4 to XP/SQL2k SP4 over a dial-up link.
If I take away the begin tran and commit it works, but of course, if one statement fails I want a rollback. I'm executing this from a Delphi app, but I get the same from Qry Analyser.
I've tried both with and without the Set XACT . . ., and also tried with Set Implicit_Transactions off.
set XACT_ABORT ON
Begin distributed Tran
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1 and DONE = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
COMMIT TRAN
It's got me stumped, so any ideas gratefully received.Thx
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Feb 22, 2007
I have a design a SSIS Package for ETL Process. In my package i have to read the data from the tables and then insert into the another table of same structure.
for reading the data i have write the Dynamic TSQL based on some condition and based on that it is using 25 different function to populate the data into different 25 column. Tsql returning correct data and is working fine in Enterprise manager. But in my SSIS package it show me time out ERROR.
I have increase and decrease the time to catch the error but it is still there i have tried to set 0 for commandout Properties.
if i'm using the 0 for commandtime out then i'm getting the Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.
and
Failed to open a fastload rowset for "[dbo].[P@@#$%$%%%]". Check that the object exists in the database.
Please help me it's very urgent.
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Feb 6, 2007
I am getting this error :Distributed transaction completed. Either enlist this session in a new
transaction or the NULL transaction. Description:
An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and
where it originated in the code. Exception Details:
System.Data.OleDb.OleDbException: Distributed transaction completed. Either
enlist this session in a new transaction or the NULL transaction.have anybody idea?!
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Dec 22, 2006
i have a sequence container in my my sequence container i have a script task for drop the existing tables. This seq. container connected to another seq. container. all these are in for each loop container when i run the package it's work fine for 1st looop but it gives me error for second execution.
Message is like this:
Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.
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Jan 8, 2008
Hi,
i am getting this error "Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.".
my transations have been done using LINKED SERVER. when i manually call the store procedure from Server 1 it works but when i call it through Service broker it dosen't work and gives me this error.
Thanks in advance.
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Jun 10, 2015
I have Full database backup upto previous day and transaction logfile of Today transaction. my database has crashed. I have restored previous day's Full backup. I have faced difficulty to restore today's transaction from today's transaction log. What are the steps to restore full database back and one day's transaction log file. Note: there is no differential database backup and transaction backup.
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Jul 11, 2007
I want to list out the pending transaction for transaction replication by publication.
Help needed.
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Nov 14, 2006
I'm receiving the below error when trying to implement Execute SQL Task.
"The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION." This error also happens on COMMIT as well and there is a preceding Execute SQL Task with BEGIN TRANSACTION tranname WITH MARK 'tran'
I know I can change the transaction option property from "supported" to "required" however I want to mark the transaction. I was copying the way Import/Export Wizard does it however I'm unable to figure out why it works and why mine doesn't work.
Anyone know of the reason?
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Jul 27, 2015
I created a Calculated measure in cube something like this : ([TransType].[TransTypeHierarchy].[TransTypeCategoryParent].&[SPEND],[Measures].[Transaction Amount]). To get only spend transactions. Now, I want to slice this measure with same hierarchy to find the amount distribution across different transaction types under spend transaction. But this query behaving like the measure doesn't have relation with measure.
you can think this as below query:
WITH
MEMBER SPEND AS ([TransType].[TransTypeHierarchy].[TransTypeCategoryParent].&[SPEND],[Measures].[Transaction Amount])
SELECT NON EMPTY {SPEND} ON 0
,NON EMPTY ([TransType].[TransTypeHierarchy].[TransTypeCategoryParent]) ON 1
FROM [CUBE]
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Jun 1, 2007
Hi
How do I make use of begin transaction and commit transaction in SSIS.
As am not able to commit changes due to certain update commands I want to explicitly write begin and commit statements. but when i make use of begin and commit in OLEDB commnad stage it throws an error as follows:
Hresult:0x80004005
descriptionyntax error or access violation.
its definately not an syntax error as i executed it in sql server. also when i use it in execute sql task out side the dataflow container it doesnt throw any error but still this task doesnt serve my purpose of saving/ commiting update chanages in the database.
Thanks,
Prashant
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Oct 10, 2005
Error returned when trying to commit the transaction to a database that is a replication distributor. (sql2005 ctp16)
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Jun 1, 2006
Hi,
I am having some problem with SSIS transaction. Eventhought I tried to imitate the concept that Jamie presented at http://www.sqlservercentral.com/columnists/jthomson/transactionsinsqlserver2005integrationservices.asp
. My workflow is as followed
*********************************
For Each ADO.Record in Oracle (transaction=not supported)
If (Certain_Field_Value = 'A')
Lookup Data in SQL DB with values from Oracle (transaction=not supported)
DO Sequence A (Start a Transaction , transaction=required)
INSERT/UPDATE some records in SQLDB(transaction=supported)
Finish Sequence A ( transaction should stop here)
UPDATE Oracle DB ( Execute SQLTask, transaction=not supported)
If (Certain_Field_Value = 'B')
Lookup Data in SQL DB with values from Oracle (transaction=not supported)
DO Sequence B (Start a Transaction , transaction = required)
INSERT/UPDATE some records in SQLDB (transaction=supported)
Finish Sequence A ( transaction should stop here)
UPDATE Oracle DB ( Execute SQLTask, transaction=not supported)
If (Certain_Field_Value = 'C')
------------
------------
End ForEach Loop
*************************************
My requirements are that I want separate transaction for each Sequence A, B, C, etc... If Sequence A transaction fails, the other should still be continuing with another transaction.
But I am getting an error regarding the OLEDB Error in next Task (e.g in Certain_Field_Value = 'B') "Lookup Data in SQL DB with values from Oracle ", the error message is ".......Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction. ".
What is it that I am doing wrong?
Regards
KyawAM
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Nov 28, 2004
I'm getting this error:
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].
http://support.microsoft.com/kb/839279 this didn't help
any suggestions?
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Oct 11, 2000
I am executing a stored procedure something like this
Create Procedure TEST
@test1
@test2
AS
BeGIN TRANSACTION ONE
SELECT...
UPDATE..
....
....
....
TRUNCATE
etc and lot of Select,update and delete statements like this
.....
COMMIT TRANSACTION ONE
The Block of code which I have b/w BEGIN TRANSACTION AND COMMIT TRANSACTION ..Will it be rolled back
if it encounters any errors in the SELECT,UPPDATE,DELETE ..statements which I have with the transaction one.
IF not How do I roll back if it encounters any erros b/w the BEGIN TRANSACTION and END TRANSACTION.
Thanks
micky
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Apr 18, 2005
Hi all,
In my ASP application, I've been using this code:
----------------------------------------------
dim conn, connectionstring
connectionstring= "Provider=SQLOLEDB.1; Data Source = blahblah; Initial Catalog = abc; User Id = osss; Password=xxx"
set conn = server.CreateObject("adodb.connection")
conn.open connectionstring
----------------------------------------------
It's just basically to set up the connection to the SQL server, it works on my other pages, but on a few pages, the last line (conn.open connectionstring) triggers this error:
"Microsoft OLE DB Provider for SQL Server error '8004d00a'
New transaction cannot enlist in the specified transaction coordinator. "
I've never encountered this error before and I couldn't think of any solution... please help!!!
Thanks so much,
Annie
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Sep 24, 2007
I had thought that if any statement failed within a BEING TRANS .. COMMIT TRANS block, then all the statements would be rolled back. But I am seeing different behavior (SQL Server 2000 8.00.2039)
For instance, run these statements to set up a test:
--DROP TABLE testTable1
--DROP TABLE testTable2
CREATE TABLE testTable1 (f1 varchar(1))
CREATE TABLE testTable2 (f1 varchar(1))
CREATE UNIQUE INDEX idx_tmptmp ON testTable1 (f1)
insert into testTable1(f1) values ('a')
So table testTable1 has a unique index on it..
Now try to run these statements:
--DELETE FROM testTable2
BEGIN TRANSACTION
insert into testTable1(f1) values ('a')
insert into testTable2(f1) values ('a')
COMMIT TRANSACTION
SELECT * FROM testTable2
..the first insert fails on the unique index.. but the second insert succeeds. Shouldn't the second insert roll back? How can I make two operations atomic?
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Feb 1, 2007
Hi,On My local SQL server I have added a linked server to another SQLserver (remoteserver) in another Windows NT Domain.When I run this codeselect count(*) from remoteserver.mosaics.dbo.LocationThis works fine.However when I usebegin transactionselect count(*) from remoteserver.mosaics.dbo.LocationIt errors out saying thatThe operation could not be performed because the OLE DB provider'SQLOLEDB' was unable to begin a distributed transaction.New transaction cannot enlist in the specified transactioncoordinator. ]OLE DB error trace [OLE/DB Provider 'SQLOLEDB'ITransactionJoin::JoinTransaction returned 0x8004d00a].My question is even though I am just reading data from theremoteserver, why does the local transaction get promoted to adistributed transaction.Any help will be grately appreciated.TIA...Rohit
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May 18, 2007
Hi
I am trying transfer data from Back Office Server to Head Office using DTS. It is failing in few stores, rest of the store it is OK
Configuration
Head office :Windows 2003 SP1 and Sql Server 2000 SP3
Failing Store:Windows 2003 SP2 and SQL SERVER 2005
Successful Store :Windows 2003 SP2 qnd SQL SERVER 2000
At Store: Setting for MSDTC
Log on Account for MSDTC Service : Network Service
Network DTC Access = True
Allow Inbound = True
Allow Outbound = True
No Authentication Required = True
TurnOffRPCSecurity = 1
port Ranges for RPC = 5000- 5100
The error Message is as follows:
(Microsoft Data Transformation Services (DTS) Package (8004d00a): Connection 'Head Office SQL Server' for Task 'DTSTask_DTSDataPumpTask_1' does not support joining distributed transactions or failed when attempting to join. Unable to enlist in the transaction.
) (Microsoft OLE DB Provider for SQL Server (8004d00a): New transaction cannot enlist in the specified transaction coordinator. )
If any one can help me, that will be great!!! Thanks in advance
Shiny
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Aug 6, 2006
With the function below, I receive this error:Error:Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0.Function:Public Shared Function DeleteMesssages(ByVal UserID As String, ByVal MessageIDs As List(Of String)) As Boolean Dim bSuccess As Boolean Dim MyConnection As SqlConnection = GetConnection() Dim cmd As New SqlCommand("", MyConnection) Dim i As Integer Dim fBeginTransCalled As Boolean = False
'messagetype 1 =internal messages Try ' ' Start transaction ' MyConnection.Open() cmd.CommandText = "BEGIN TRANSACTION" cmd.ExecuteNonQuery() fBeginTransCalled = True Dim obj As Object For i = 0 To MessageIDs.Count - 1 bSuccess = False 'delete userid-message reference cmd.CommandText = "DELETE FROM tblUsersAndMessages WHERE MessageID=@MessageID AND UserID=@UserID" cmd.Parameters.Add(New SqlParameter("@UserID", UserID)) cmd.Parameters.Add(New SqlParameter("@MessageID", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() 'then delete the message itself if no other user has a reference cmd.CommandText = "SELECT COUNT(*) FROM tblUsersAndMessages WHERE MessageID=@MessageID1" cmd.Parameters.Add(New SqlParameter("@MessageID1", MessageIDs(i).ToString)) obj = cmd.ExecuteScalar If ((Not (obj) Is Nothing) _ AndAlso ((TypeOf (obj) Is Integer) _ AndAlso (CType(obj, Integer) > 0))) Then 'more references exist so do not delete message Else 'this is the only reference to the message so delete it permanently cmd.CommandText = "DELETE FROM tblMessages WHERE MessageID=@MessageID2" cmd.Parameters.Add(New SqlParameter("@MessageID2", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() End If Next i
' ' End transaction ' cmd.CommandText = "COMMIT TRANSACTION" cmd.ExecuteNonQuery() bSuccess = True fBeginTransCalled = False Catch ex As Exception 'LOG ERROR GlobalFunctions.ReportError("MessageDAL:DeleteMessages", ex.Message) Finally If fBeginTransCalled Then Try cmd = New SqlCommand("ROLLBACK TRANSACTION", MyConnection) cmd.ExecuteNonQuery() Catch e As System.Exception End Try End If MyConnection.Close() End Try Return bSuccess End Function
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Dec 28, 2006
My SQL statement:
SQL Server seems to think my SQL Statement is too long........ I'm not sure why.
"INSERT INTO tblChangeControls (Initiator,BPM,AddRemMod,ChangeType,SpecificChange,ChangeDescription,TechnicalDescriptionOfChange,DateInitiated) select 'Benjamin Short' ,'6' ,'2' ,'Printer' ,'40' ,'' ,'';"
Error message:
The identifier that starts with 'INSERT INTO tblChangeControls (Initiator,BPM,AddRemMod,ChangeType,SpecificChange,ChangeDescription,TechnicalDescriptionOfChange,' is too long. Maximum length is 128.
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Jan 7, 2008
Hey, ive got a listof events that have occured on my site, updates etc. and Im trying to show how long ago the updates happened. For instance, say the date of an update is : 16/10/2007 15:16:03 I want the Label to say "Happened over 2 months ago" etc.Now ive tryed to use an IF statment but I cant seem to get it right : DateTime dt = Convert.ToDateTime("16/10/2007 15:16:03"); if(dt.ToShortDateString() == DateTime.Now.ToShortDateString()) { //happened today if(dt.ToShortTimeString() == DateTime.Now.ToShortTimeString()||dt.ToShortTimeString() < DateTime.Now.AddMinutes(-1).ToShortTimeString()) { //happened within a minute UpdateLabel.Text = "About A Minute Ago"; } } else if (dt.ToShortTimeString() == DateTime.Now.AddDays(-1).ToShortTimeString()) { //happened yesturday UpdateLabel.Text = "Updated Yesturday"; } else if (dt.ToShortDateString() == DateTime.Now.ToShortDateString() || dt.ToShortDateString <= DateTime.Now.AddDays(-7).ToShortDateString()) { UpdateLabel.Text = "Updated Last Week"; }Any ideas where Im going wrong? Im probally staring it straight in the face, but I cant see it. Thanks in advance John
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Aug 10, 2001
SQL 7.0 SP1 - NT 4.00 EE SP6a - Cluster - Multiprocessor(2)-VB 6.0 SP4.
Maybe a very stupid question,but I need to know if it is possible to assign a low priority to a VB exe that query for long time eating all the CPU (100% in task manager).
Thank you.
Franco
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Jul 18, 2000
I have a challenge and am not very versed with coding this situation. The situation is I am trying to put long text (more that 255 char) in a ntext field in SQL7, but the max char can input is only 255. Anyone can advice on how to put in more that 255 char in a field as well as how to select back the record whice more than 255 char.
Please give advice if you encounter this problem before.
Regards.
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Jul 24, 2000
Anyone have same sample on how to put in and retrive long text (more then 255 characters).
Please Comment.
------------
Ray Miao at 7/19/00 8:24:08 AM
You should use readtext and writetext to access text column. By the way, nchar and nvarchar can hold up to 4000 characteres.
------------
Wong at 7/18/00 11:43:15 PM
I have a challenge and am not very versed with coding this situation. The situation is I am trying to put long text (more that 255 char) in a ntext field in SQL7, but the max char can input is only 255. Anyone can advice on how to put in more that 255 char in a field as well as how to select back the record whice more than 255 char.
Please give advice if you encounter this problem before.
Regards.
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