SQL Server 2005 - Transactions
Jan 24, 2007
Hello guys!
I am working with SQL Server 2005 a few months, and i need your help about transactions topic.
In first, i hope you are patient with my english, i will try to explain it the best i can ;-)) and now... my question and thanks you in advance.
I am trying to set the transaction option of a foreach loop container task in run time using the Expressions option. There, I have configured the transaction option of this task with a variable value (var type int) and this variable is informed at the beginning of my dts using a script task (values: 0 for Not Supported, 1 for Supported, 2 for Required).
The problem is the transaction option gets the variable value but... the variable value by default. After, during the dts execution, the variable gets the new value but not the transaction option.
In summary, my question is ... is it possible to set the transaction option during the run time?.
Thanks for your help!
Chris.
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Mar 19, 2007
I have a million plus line program that uses DAO and JET/Access databases. We are modifying the code so that it will work with BOTH JET and SQL Server databases with an eye to moving to just SQL Server eventually.
Much of the code works just fine without change when using DAO and SQL server as 90+ percent of the code is accessing data READ-ONLY. (Jet's ODBC capability is used)
There are however some transactions that will not work.
When I examine the SQL Trace, I notice that after the transaction has begun, the SPID has changed. This happens often when cursors are used, BUT happens even if the only activity after a DBEngine.BeginTrans is issued DO NOT USE CURSORS as in the following code:
DBEngine.BeginTrans
strSQL = "INSERT INTO [TestTable] (MyKey,MyData, MyData2) VALUES (1,'apple','fruit')"
DB1.Execute strSQL
strSQL = "UPDATE [TestTable] SET [MyData] = 'apple2' WHERE [MyKey] = 1"
DB1.Execute strSQL
DBEngine.Committrans
The second DB1.Execute times out: [Microsoft][ODBC SQL Server Driver]Timeout expired
The trace shows a new SPID is opened when the UPDATE query is executed. A new SPID is spawned and the JET engine is sending an SELECT SQL to get the value for the MyKey:
SELECT "dbo"."TestTable"."MyKey" FROM "dbo"."TestTable" WHERE ("MyKey" = 1 )
The second SQL statement is waiting for the first one that is being done in a transaction to be completed. The program is expecting that both of these will be being done on the SAME SPID or at least the same transaction scope.
So, since I have no way of knowing how and when a new SPID will be spawned using DAO, we are not going to use it for when we do transactions.
I have tried to use ADO (Provider=SQLOLEDB.1), but ADO has the same problems as DAO as far as a new SPID being spawned in some circumstances, but it works in more situations than DAO.
The Connection Object is not guaranteed to be attached to a specific SPID - it can change at will. So Cn.Execute done twice in succession may be done on separate SPIDs.
My question is this: Is there a way to make sure that no new SPID is spawned?, Is there a way to know when a new SPID will be spawned so we can know how to avoid this situation? Is there a better way than using ADO? Keep in mind that this program has to be able to use BOTH Access/Jet databases and SQL server.
Note:
I have spent over 160 hours reading about Jet, the VB Guide to SQL Server, searching MSDN, Google etc. No article really does justice to this subject of transactions using DAO, ADO and SQL Server and the issue of the SPIDs (equivalent to a session and the session is the scope of the transaction). If you could be sure to stay on the same SPID, then you could just issue your own SQL Begin Transaction and control it all if you only plan on doing SQL statements without the need for cursors. A Microsoft article on this subject would be really helpful to all the programmers that are just now getting around to migrating to SQL Server.
Also, note, that if we did not do transactions, then we would not have to modify a single line of our code to make it work with SQL Server.
There is virtually no documentation for much of what I have written about in this Thread. I am very surprised as it seems this would have come up for thousands of programmers. I must be missing something, so thank you in advance for your help.
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Aug 22, 2006
Hello,I'm trying to follow some sql sentences that my system send to SQL 2005express and I don't have a deep knowlegde of databases. I know thatthere's a transactions log that keeps all sentences that go intodatabase motor. Is it correct? in case yes, is there a way to look atthis archived sentences?Thanks in advanceIgnacio
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May 4, 2008
Hi all,
I am have database consist of 10 tables, I want to make log transactions for this tables, So any act happened on these tables, such as adding or modifying or deleting record, I want to put this information somewhere in the database, to determine the user who has done such acts on these tables.
I would high appreciate for any assistant.
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Jan 22, 2008
Hello,
I've been redirected here from the Transaction Programming forum becuase I have e peculiar issue with SQL 2005 running INSERT stored procs from multiple WCF services all withing a TransactionScope.
The original post is http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2720665&SiteID=1&mode=1
The story goes, I have SRVC A with starts a TransactionScope which in turn calls SRVC B & C in sequence based on processing rules.
SRVC A is a Sequential Workflow which Starts and Completes the TransactionScope
SRVC B Creates a new Customer into the database
SRVC C Creates new Accounts for that Customer and Initialises the accounts with funds
The DB Tables underneath are Customer, Account and AccountLog
DDL
Code Block
CREATE TABLE [Member].[Customers](
[CustomerId] [int] IDENTITY(1,1) NOT NULL,
[Name] [varchar](32) NOT NULL,
[CreatedUtc] [datetime] NOT NULL ,
CONSTRAINT [PK_Customer] PRIMARY KEY CLUSTERED
(
[CustomerId] ASC
)
CREATE TABLE [Bank].[Accounts](
[AccountId] [int] IDENTITY(1,1) NOT NULL,
[CustomerId] [int] NOT NULL,
[CurrentBalance] [money] NOT NULL,
[LastUpdateDate] [datetime] NULL,
[CreatedDate] [datetime] NOT NULL,
[timestamp] [timestamp] NOT NULL,
CONSTRAINT [PK_Bank_Account] PRIMARY KEY CLUSTERED
(
[AccountId] ASC
)
) ON [PRIMARY]
GO
ALTER TABLE [Bank].[Accounts] WITH CHECK ADD CONSTRAINT [FK_Account_Customer] FOREIGN KEY([CustomerId])
REFERENCES [Member].[Customers] ([CustomerId])
CREATE TABLE [Bank].[AccountLog](
[AccountLogId] [int] IDENTITY(1,1) NOT NULL,
[AccountId] [int] NOT NULL,
[Amount] [money] NOT NULL,
[UtcDate] [datetime] NOT NULL,
CONSTRAINT [PK_Bank_AccountLog] PRIMARY KEY CLUSTERED
(
[AccountLogId] ASC
)
) ON [PRIMARY]
GO
ALTER TABLE [Bank].[AccountLog] WITH CHECK ADD CONSTRAINT [FK_AccountLog_Account] FOREIGN KEY([AccountId])
REFERENCES [Bank].[Accounts] ([AccountId])
NB. I've removed most fields not essential for this example.
So from SRVC A I invoke SRVC B and the Customer is created, however when I get to SRVC C and the accounts are to be created I get a lock. Only when the Transaction aborts due to timeout, do I see in SQL Profiler that the call to the SP that created the Account is executed but eventually rolls back as it is part of the distributed transaction.
Now, If I set the Isolation level in the TransactionScope to ReadUncommitted (urgh) the problem remains. When I set the IsolationLevel to Read Uncommitted in the SP that creates the account the problem remains but when I remove the FK constraint the problem disappers. The other curious thing is that with the Customer -> Account FK removed and when SRVC C calls to insert funds into the AccountLog which also updates an aggregated total in the Account from within the same transaction scope and with Account -> AccountLog FK constraints in place there is no locking even with Isolation Serializable.
I'm quite at a loss as to what could be causing these issues. If anyone has any suggestions I would greatly appreciate any help.
Thanks
Andy
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Aug 6, 2007
Our Transactions/sec counter jumped quite a bit when we moved to SQL Server 2005. The move coincided with increased load so we didn't think anything of it until recently. Upon further review, the counter just seems too high.
There was an article in SQL Server magazine a few years ago by Brian Moran where he states, "Transactions/sec doesn't measure activity unless it's inside a transaction. Batch Requests/sec measures all batches you send to the server even if they don't participate in a transaction." He goes on to say that Transactions/sec will be skewed lower because it is a subset of Batch Requests/sec. (http://www.sqlmag.com/Article/ArticleID/26380/sql_server_26380.html)
The article was written for SQL Server 2000. We conducted tests in 2000 and found what he said to be right on the money. SELECT statements increased Batch Requests/sec, but not Transactions/sec. UPDATE/INSERT/DELETE statements increased both in lockstep. Makes perfect sense so far.
We conducted the same tests in 2005 and found a radically different story. While SELECT statements behaved the same, UPDATE/INSERT/DELETE statements showed Transactions/sec skyrocket 2-10x more than Batch Requests/sec for the duration of the statement. In other words, a single transaction submitted by our application fires off exponentially more transactions than the one we submitted. I was unable to pinpoint exactly what these "hidden" transactions were actually doing. Is this something that occurred in 2000 but simply wasn't reported? Or is it new behavior in 2005?
While trying to answer these questions we noticed a second strange behavior in 2005. When no queries are being executed the Transactions/sec counter still jumps every six seconds like clockwork. And these phantom transactions number in the thousands. We tried to use profiler to capture what SQL was being executed, but nothing shows up in any SQL Statement or Batch event. However, when we turned on the SQLTransaction event we found it, sort of. An object called GhostCleanupTask runs every six seconds causing thousands of transactions. We don't know exactly what it is doing, but we noticed that it ran consistently on some databases, but never on other databases. Both sets of databases are identical and in use.
So, all of this investigation leads me with three final questions.
1. What is behind all the extra transactions caught by perfmon when I submit a single transaction?
2. What is GhostCleanupTask and why does it take so many transactions? (And why does it only run on certain databases?)
3. If a potential customer asks for our Transactions/sec count, is it accurate to give them the big number, knowing that our application is only actually submitting a fraction of that? On the other hand, the system apparently is actually doing that many transactions. (For instance, on our production server during peak, Batch Requests/sec is about 4,000, while Transactions/sec hits 26,000.
Any insight would be much appreciated.
3P
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Nov 13, 2007
Help, I had a tran log grow to it's restricted size, however the person that created this made the max size almost equal to the set max size. Needless to say I have not space to work with. SQL got bounced and my db went into recovery mode. After recovery mode was complete I tried to put my database in emergency mode but it exec's but never sets the mode. Next I tried to dbcc checkdb and I get msg 7929, level 16 state 1, line i Check statement aborted. Database contains deferred transactions. There is no back up for this database. Dev play area. I can not detatch db becase of the same error. What next? Any help would be great.
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May 22, 2005
Hi there,
I have decided to move all my transaction handling from asp.net to stored procedures in a SQL Server 2000 database. I know the database is capable of rolling back the transactions just like myTransaction.Rollback() in asp.net. But what about exceptions? In asp.net, I am used to doing the following:
<code>Try 'execute commands myTransaction.Commit()Catch ex As Exception Response.Write(ex.Message) myTransaction.Rollback()End Try</code>Will the database inform me of any exceptions (and their messages)? Do I need to put anything explicit in my stored procedure other than rollback transaction?
Any help is greatly appreciated
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Jun 4, 2007
Is it possible to use DTC (or cross database queries) with mirroring on SQL 2005 Service Pack 2?
Thnx,
GoranP
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May 9, 2007
I am using ADO.Net for data access and was wondering if anyone knows a good resource for information of sql transactions? Also, do you know if the ForEach statement can be made in sql transactions?
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May 28, 2005
Hi,I am currently having dificulties in finding a way to use transactions while using classes for table representation.Let me explain, i have two tables a Customers and a Movements one, so two tables = two classes. Each class supports Insert, Edit and Delete, so if this tables worked seperatly there would be no problem but in this case whenever i create a customer i must create a movement for that customer so the connection don't pass between classes and i cannot use transactions ;(Is there any brilliant way to use transactions any other way? Even between connections or getting a solution for my implementation?Best Regards,Luis Simões
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Mar 22, 2006
Hi,I am new to SQL Server Administraion, and straight away thereoccured a case in which some users modified the database and I have totrack 'em out something this :-A table was modified on 17 - 03 -2006 and now I want to see whatqueries occured on that day how can I do that! I have seen thetransaction log but it ain't helpful. Do help me out!
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Oct 13, 2015
I have a requirements to collect Transactions per second on 50 databases from a sql server instances.provide me a script to collect TPS for 50 databases?
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May 5, 2005
Hi,
i wanna know how to use rollback in sql server without actually using transaction...
is there any way i can do that?
thanx in advance
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May 11, 2005
hi,
i have developed an web-enabled database application using ASp.net, C# and sql server 2000.
now i want to implement transaction controls over the same
can anyone plz help me in implementing the same?
thanks in advance
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Mar 16, 2004
Hi
I have a couple of sql servers registered in EM which are outside of the domain. Whenever I run queries on them with the query analyzer, they seem not to commit the transaction. When I'm about to close down the window, I'm always told that there are uncomitted transactions.
Is this some kind of a bug, and is there something I can do about it?
Thanks
Martin N Jensen
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May 22, 2004
Hi all,
When i begin a distributed transaction..., do i need to always
set xact_abort on?
But when i tried to put custom error handling to roll back a transaction with a linked server , it seems its impossible (as set xact_abort on, already automatically rolls back the transaction)
Does anyone have any ideas on this?
Thanks in advance
Benny
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Feb 15, 2007
Hi,
I've tried to enclose a few database operations in a TransactionScope block but it looks like SQL Server CE RM does ignores ambiental transaction.
Here is the code:
static void TestTxn() {
// Command to insert an integer in a table with a single integer column
string cmdPassText = "INSERT TESTTABLE (INTFIELD) VALUES(1)";
// Command to force field type mismatch exception
string cmdFailText = "INSERT TESTTABLE (INTFIELD) VALUES('Foo')";
using (TransactionScope scope = new TransactionScope()) {
using (SqlCeConnection conn = new SqlCeConnection("DataSource = 'Test.sdf'")) {
try {
conn.Open();
SqlCeCommand cmdPass = new SqlCeCommand(cmdPassText, conn);
returnValue = cmdPass.ExecuteNonQuery();
SqlCeCommand cmdFail = new SqlCeCommand(cmdFailText, conn);
returnValue = cmdFail.ExecuteNonQuery();
}
catch (Exception ex){
Console.WriteLine("Command failed");
Console.WriteLine("Exception Message: {0}", ex.Message);
}
}
scope.Complete();
}
}
After first command suceeds and seccond command failes table still has one affected row after transaction.
Am I doing something wrong or System.Transactions.Transaction is not supported with SQL Server CE RM?
Thanks,
Aleksandar
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Feb 7, 2008
I have a SQL Server 2005 with a linked server to an Oracle RDB 6.0, using the Microsoft OLE DB for ODBC provider. I would like to select some rows from the Oracle RDB and then Update those specific rows afterwards. Whenever I try to do this in a transaction (BEGIN TRAN) I get an error "Driver not capable". Is there any way to do this in a single transaction?
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Dec 23, 2003
Hi ,
I got problem in production server at client place(No backup copy & not replicated,it's a SQL SERVER 2000 Enterprise server),by mistake client updated the data without using where condition then updated lakhs of rows (in SQL server autocommited),Now I need to recover this data from LOG file(.ldf).I tried with LOG EXPLORER(Third party tool) Trail version recovered from default database(Northwind,Pubs).But client not willing purchase this S/W for simple cause,How can we recover the data from LOG file.
1.Can we write the Program in C# to read the SQL Server Log and show the past transactions?
2.Is There any Stored procedures exist in SQL Server to read the day transactions in log file and take the backup?
3. How to read Transactions Log file in SQL Server 2000?
It's very Urgent,I am not expert in SQL Server 2000.
Could U Please Help me with possible solutions.
Regards,
Harikrishna.
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Jun 14, 2007
I'm trying to create a transaction replication from SQL Server 2000 to 2005. Basic replication between the servers works just fine. However, what I want to accomplish is to be able to skip some of the transactions. Example - from time to time we want to purge some of the historical data from the main database (the publisher). We don't want the same purging to occur on the destination database, which will be used for reporting purposes and needs to include all the historical information. I wanted to simply stop the replication log reader, purge the records, backup the transaction log with truncation and then restart the reader. The only problem - the truncation on the replicated database keeps the transactions of the purging until they are replicated, so the transaction log backup doesn't help. Any ideas would be greatly appreciated!
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Dec 21, 2006
Hi All,
I am writing an interface between SQL Server and Access. I have chosen to use a linked server using the Microsoft.Jet.OLEDB.4.0 provider. One of the requirements is to have multiple SQL statements in one transaction, which is where I am encountering the problem. (see below)
BEGIN TRAN
INSERT INTO ACCES...Table
Msg 7390, Level 16, State 2, Line 2
The requested operation could not be performed because OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "HES" does not support the required transaction interface.
I am having a really really hard time finding documentation on the Microsoft.Jet.OLEDB.4.0 provider, specifically I want to know for sure if it supports the ITransactionJoin interface.
The main question is - does MS Access linked servers support transactions?
Thank you for your help,
I have exausted all resources available to me in finding out the answer.
Thanks,
Eric
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Feb 21, 2008
May i have a list of Which queries or codes couldn't use in a Transactions in Sql Server ?
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Jun 15, 2015
I have a piece of code that has happily run daily for at least 4 years. I have moved it to a machine that is meant to have an identical set-up, and it fails. I need to work out why it fails, but I am stuck. The code works as follows:
CREATE storedProc1 (Parameter1, etc)
DECLARE @TransactionName nvarchar(127), @TransactionActive bit
-- Plus Other Variables...
BEGIN
BEGIN TRY
SET @TransactionName= 'TransactionName1'
SET @TransactionActive = 'True'
BEGIN TRANSACTION @TransactionName WITH MARK
[Code] .....
When I EXECute StoredProc1, it fails with the Error Message "Cannot roll back . No transaction or savepoint of that name was found." I think that message comes from a ROLLBACK TRANSACTION statement in the CATCH of StoredProc2. I have tried commenting out that ROLLBACK statement, which changes the error message to: "Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 1, current count = 2."
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Dec 17, 2005
I need to live update my SQL-Server 2000 database from AS400 database.
I usually use Access 2002 database between the AS400 database and the SQL-Server 2000 database to reflect any live update.
I use the (Link Tables...) option when creating a new table in access and link it with the ODBC to connect with the AS400 database.
After that I work with the Access link table.
Is there any tool in SQL-Server 2000 to show the live transactions in AS400 databasee so I can work on it?
Please advise
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Jul 23, 2005
Hi,I'm having a problem running a distributed transaction between twolinked servers that both have multiple instances of SQL Serverinstalled on them. This is the error message that I receive:"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 thespecified transaction coordinator. ]OLE DB error trace [OLE/DB Provider 'SQLOLEDB'ITransactionJoin::JoinTransaction returned 0x8004d00a]."The query follows the format:"BEGIN DISTRIBUTED TRANUPDATE [LINKEDSERVER1INSTANCE_NAME].DB.OWNER.TABLENAMESET fieldname = alias2.fieldnameFROM tablename alias2JOIN [LINKEDSERVER1INSTANCE_NAME].DB.OWNER.TABLENAME alias1on alias2.urn=alias1,urn"[color=blue]>From what I can gather from various sources the SQL Server must be[/color]named the same as the computer which it is installed on. However, if Ihave two instances of SQL Server, they cannot both be named the same asthe computer. Does anyone know of a way around this or whether I'mbarking up the wrong tree completely?Many thanks.
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Feb 12, 2009
We get the below error while performing a distributed transaction on linked server. We have several linked servers configured in the source server and all of them succeed with the distributed transaction except on one.
We did all the basic troubleshooting and moreover the distributed transactions work fine if we use a remote server instead.
Error:
OLE DB provider "SQLNCLI10" for linked server "SERVERNAME.REDMOND.CORP.MICROSOFT.COM" returned message "No transaction is active.".
Msg 7391, Level 16, State 2, Line 3
The operation could not be performed because OLE DB provider "SQLNCLI10" for linked server "SERVERNAME.REDMOND.CORP.MICROSOFT.COM" was unable to begin a distributed transaction.
Test code:
begin distributed transaction
select top 10 * from [SERVERNAME.REDMOND.CORP.MICROSOFT.COM].master.sys.objects
ROLLBACK
Source server :
Microsoft SQL Server 2008 (RTM) - 10.0.1779.0 (X64)
Nov 12 2008 12:10:04
Copyright (c) 1988-2008 Microsoft Corporation
Enterprise Edition (64-bit) on Windows NT 6.0 <X64> (Build 6001: Service Pack 1) (VM)
Target server :
Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)
Jul 9 2008 14:43:34
Copyright (c) 1988-2008 Microsoft Corporation
Enterprise Edition on Windows NT 5.2 <X86> (Build 3790: Service Pack 2)
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Oct 23, 2015
I'm investigating a poorly performing procedure that I have never seen before. The procedure sets the transaction isolation level, and I suspect it might be doing so incorrectly, but I can't be sure. I'm pasting a bastardized version of the proc below, with all the names changed and the SQL mucked up enough to get through the corporate web filters.
The transaction isolation level is set, but there is no explicit transaction. Am I right that there are two implicit transactions in this procedure and each of them uses snapshot isolation?
SET NOCOUNT ON;
SET TRANSACTION ISOLATION LEVEL SNAPSHOT;
DECLARE @l_some_type varchar(20),
@some_type_code varchar(3),
@error int,
@error_msg varchar(50);
[Code] .....
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Aug 8, 2006
When I installed VS 2005, it installed the default version of SQL Server 2005 Express that ships with Visual Studio 2005 installer media.
How can apply SQL Server 2005 Express SP1 to update this existing instance?
Currently, if I run this query:
SELECT @@version
I get the following:
Microsoft SQL Server 2005 - 9.00.1399.06 (Intel X86) Oct 14 2005 00:33:37 Copyright (c) 1988-2005 Microsoft Corporation Express Edition on Windows NT 5.1 (Build 2600: Service Pack 2)
After applying SP1, I should get 9.00.2047.00.
Should I just go to this link and download & install the SQL Server 2005 Express Edition SP1:
http://msdn.microsoft.com/vstudio/express/sql/download/
Thank you,
Bashman
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Sep 3, 2007
I installed Visual Studio 2005 Professional then after that was installed and running, I tried to install the the SQL Server 2005 Developer's Edition which installed but I do not get the SQL Server 2005 Studio Manager. I have remove and reinstalled but it never gets installed. Any ideas?
Chuck
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Jan 21, 2008
We have been using Sql Server 2005 Compact Edition 3.1 RDA synchronization method successfully on Sql Server 2000 database. Recently we moved the database to Sql Server 2005, sync doesn't work anymore, it just hangs on one table. On further investigation, we found out that it's the index on that table that causes this. We removed the index, it works fine. We are wondering the root cause, removing the index is not a solution for us. Any thoughts?. Thanks.
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Feb 22, 2008
(1) I have already installed of SQL Server 2005 Developer Edition first.
(1) Can I install visual studio 2008 without the 2005 express edition of SQL server? Will be any problems because I don't have express edition of SQL server? Do I need to install the express edition of SQL server as well?
(3) How to use SQL Server 2005 Developer Edition instance on visual studio 2008?
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Aug 13, 2003
Hi All,
Can anybody suggest me a website where I can find articles on Managing transactions with Sql server. Also a scenario where the transactions take place in a environment involving 2 different databases, Like the bank account and credit card transactions (specifically of 2 way kind)
Thanks
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