Sql Transactions And Web Services
Mar 27, 2007
I am using a web service to access SQL Server to return data to the client as well as to update, insert and delete.
I am passing an Sql Transaction ByRef to the web service when I do updating...etc.
The problem is because I am using transactions, I cannot share the web service....I get the error: System.Data.SqlClient.SqlTransaction cannot be serialized because it does not have a parameterless constructor when I try to create a web reference.
Is there a way around this aside from having the transaction in the web service itself (which I am not sure is a good idea)?
Any help is greatly appreciated.
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Aug 28, 2015
I created an SSIS packages on VS 2013 using SQL 2014. I have to use transactions and without MSDTC as we don't have that environment.
Ok my issue when I load a stage table during the process and then I select from that same stage table my records on another table are not being inserted. why? I have done sql profiler an all sql statements are being ran under same SPID.
Package design
1. For each container - this is to process files on a folder
2. Execute sql task - begin tran
3. sequence container - to hold all and organize containers
4. execute sql task - truncate ImpTableA
5. Data Flow task - Import data into ImpTableA from file
6. execute sql task - insert into DimProducts and new products found in ImpTableA that are not in DimProducts so I'm joining the 2 tables together as a outter join and getting the new ones.
7. Execute sql task - commit tran
8. Execute sql task -Â rollback tran
On Step 6 I don't find any new rows on DimProducts even though I know there is new products. I have tested the sql statement in SSMS and it works and I find new rows. For some reason SSIS is not finding new products, I'm assuming that the rows are not committed yet and therefore can query them but I thought if I was under the same transaction and SPID I would be able to read uncommitted rows.
Need to be able to read from table that was just inserted in a transaction incase of a failure roll everything back.
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Jun 2, 2015
I would like to have my SSIS tasks to be transacted, but due to infrastructure issues in our network, cannot utilize DTC, because our SQL Boxes are situated where the DTC cannot communicate. I know we can use execute SQL task with Bein Trans, but I dont think dataflow and all will not be in scope of this and cannot be rollback in case of any error in the underlying tasks.
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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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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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Apr 6, 2005
I have a web application with a shopping cart, how do I stop all the shopping cart transaction from going into the db log? Is this possible? These are are only transient data movements, and will never be need to to restore to, and they are cause log bloat. Or is there a better way to stop log bloat?
Thanks
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Apr 17, 2000
Hi All,
How can we change connection properties in a DTS pkg with connection?
You can loop through the connection count but the connection ID is not static one.So can’t rely on that.
Is there another way of changing connection properties?
Thanks in Advance
Barath
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Sep 5, 2000
Hi all....
I am currently designing a DTS Package to import data that is processed daily into a large database.
I have to design the package such that if any step fails when importing, I roll back the entire transaction.
I have designed the package with this in mind, checked "join transaction if present" and "rollback transaction on failure" in all of the workflows. I have also made all workflows serialized.
However, when I run the package, it fails on one of the data pumps with the error:
Transaction context in use by another session.
Any ideas?
Thank you,
Brian
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Dec 1, 2000
I am replicating (finally!!) and on my publishers agent history I can see it says xx transactions with xx commands were delivered. (xx being the number)
Where can I look to see what the transactions or commands are?
Is there a place the system stores this information?
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Oct 17, 2003
what is maximum limit of no. of transactions per sec. in sql server 2000
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Sep 6, 2004
Is there a point to wrapping a single UPDATE or INSERT statement in an explicit TRANSACTION:
BEGIN TRANSACTION
INSERT INTO Table (...) VALUES (...)
COMMIT TRANSACTION
I understand ACID and concept of transactions. However, I thought they were only necessary for multi-statement operations. I'm maintaining code that does this and am wondering if this is necessary. Does SQL Server guarantee ACID for single statements? Are single UPDATE/INSERT statements prone to race condition like affects without using explicit transactions?
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Apr 17, 2008
Are there any scenarios where an un-commited transaction would block further queries?
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May 27, 2008
If you run the Begin Transaction code and then run a create such as an update query and you see that it effects the number of rows that you wanted it to effect is there a way to look at the actual data that changed before you Commit Transaction?
Thanks!
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Jul 1, 2007
I have a table with around 240 columns and one of the column in the Table is the Inserttime ( DATETIME ) and I using a GETDATE() function in the stored Proc, when we insert data into the table. In the same Milli second 2007-06-27 09:32:58.303 , I have around 7600 records in the database. The Stored Proc is called for each Individual record and we don't bunch the transactions. Is this possible.
I did some bench marking on this server and I can insert only 700 - 800 records approx / sec on this particular table.
Thanks
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Aug 1, 2007
I have a small database that I have been testing.I get an error about a transaction deadlock.The code is in stored procedures and I added transactions to the sp'sbut the error happened again.I wrapped the whole sp in just one transaction and I don't have anyindex on the tables.When I test just by running a program that sends 3 calls at a time itwill get a deadlocked transaction as I send 6 or 9 at a time.I am not sure how it can have a deadlocked transaction after I usedtransactions(begin and commit) in the sp's.Steve
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Oct 8, 2007
I am working with transactions and use try catch to capture errors and in the event of an error i have to rollback the transaction. How can i perform this?, most of the errors which i forsee are either insertion of null values into non nullable columns or violation of Primary keys while inserting duplicates.
I started by coding the following way but it does not rollaback apparently the try catch does not work for above kind of errors..Can somebody help..
DECLARE @REPORTING_PERIOD VARCHAR(6)
BEGIN TRY
BEGIN TRANSACTION
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SET @REPORTING_PERIOD =(Select REPORT_PERIOD_ID from dbo.T_REPORT_PERIOD where C_FLAG_ACTIVITY=1)
--Step 1
INSERT INTO [dbo].[T_COUNTRIES]
([C_COUNTRY]
,[LB_COUNTRY]
,[C_REGION]
,[FK_REPORTING_PERIOD])
SELECT [C_COUNTRY]
,[LB_COUNTRY]
,[C_REGION]
,@REPORTING_PERIOD
FROM [dbo].[IN_T_COUNTRIES]
--Step 2
INSERT INTO [dbo].[T_FLE]
([FK_P_FLE]
,[C_COSMOS]
,[LB_FLE]
,[C_PARETO]
,[C_OPCO_SCOPE]
,[C_LEVEL]
,[C_FLE_TYPE]
,[C_ACTIVITY]
,[F_MATERIAL]
,[C_MATERIAL_PRIORITY]
,[C_CALCULATION_METHOD]
,[F_CREDIT_RISK_MATERIALITY]
,[V_PARTICIPATION]
,[FK_REPORTING_PERIOD])
SELECT Null as [FK_P_FLE]
,[C_COSMOS]
,[LB_FLE]
,[C_PARETO]
,[C_OPCO_SCOPE]
,[C_LEVEL]
,[C_FLE_TYPE]
,@REPORTING_PERIOD
FROM [dbo].[IN_T_FLE]
COMMIT TRANSACTION
END TRY
BEGIN CATCH
SELECT
ERROR_NUMBER() as ErrorNumber,
ERROR_LINE() as ErrorLine,
ERROR_MESSAGE() as ErrorMessage;
-- Test XACT_STATE for 1 or -1.
-- XACT_STATE = 0 means there is no transaction and
-- a commit or rollback operation would generate an error.
-- Test whether the transaction is uncommittable.
IF (XACT_STATE()) = -1
BEGIN
PRINT
N'The transaction is in an uncommittable state. ' +
'Rolling back transaction.'
ROLLBACK TRANSACTION;
END;
-- Test whether the transaction is active and valid.
IF (XACT_STATE()) = 1
BEGIN
PRINT
N'The transaction is committable. ' +
'Committing transaction.'
COMMIT TRANSACTION;
END;
END CATCH;
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Nov 8, 2006
Hello All,
When i am working with Transactions i got one doubt.
If i am inserting any records into a table with primary key if a transaction is rolled back i am finding one primary ID is missing. Is it so.
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Apr 2, 2007
I've been searching around and haven't found anything that simply states what I want to know.
I want to use a transaction within my CLR Stored Proc, to do so I've got System.Transactions referenced and I can access the current transaction via Transaction.Current.
My questions are
Will there always be a current transaction?
Do I need to create a new transaction if one doesn't already exist?
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Sep 4, 2006
Hi world:
I have this issue:
I need to push rows from CE to SQL Server 2000 and after delete these rows of CE database only if all rows have been sent to SQL Server 2000.
I think the best is work with transactions. Since I know I can use transactions for this purpose, can anybody give me a link with push transaction examples ?
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Dec 17, 2007
Hi all,
What does "Transactions/sec" counter in SQL 2005 under databases do in terms of performance. My counter shows almost 100% all the time in 4 terrbyte DB in superdome with many CPUs.
Which is the optimal value for this counter?
thanks in advance
Priw
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Mar 31, 2008
Hi,
I am using C#.NET 2005, SQL Server 2000.
I have a few questions to ask. Firstly, can anybody help me by telling the difference between the code below and the same code with comments removed:
string localquery = "select bla bla"; SqlDataAdapter _sda; DataTable _dt; SqlCommand _cmd; bool isErrCatched = false; Exception ExcToThrow = new Exception(); using (SqlConnection _cn = NewConnection) // NewConnection returns a static SQLConnection object { _cn.Open(); _cmd = new SqlCommand(localquery, _cn); //SqlTransaction myTrans; //myTrans = _cn.BeginTransaction(); //_cmd.Transaction = myTrans; _dt = new DataTable(); _sda = new SqlDataAdapter(_cmd); try { _sda.Fill(_dt); _sda.Dispose(); //myTrans.Commit(); } catch (Exception exc) { //try { myTrans.Rollback(); } catch {} isErrCatched = true; ExcToThrow = exc; } finally { _cn.Close(); } _cmd.Dispose(); } _cmd = null; if (isErrCatched) throw ExcToThrow; return _dt;
My first question: Can there be a performance loss if I uncomment the lines about transaction usage? I mean, when I do this I start to get more timeouts.
My problem goes on. When I comment those lines and run a stress tool, I am getting "column X does not belong to table Y" errors. If those lines are not commented i am not getting this error, but I get timeout errors frequently. So, my second question: is there something wrong in my query or is there a bad coding practice I am following? Could someone offer a better and more robust sample for this code block?
By the way, connection pooling is on. And these errors are observed under high loads.
Thanks everybody.
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Jun 7, 2006
I have transaction that will run on an hourly bases. I need to make sure that no one will start this transaction while it is running. I just need to know the system table that has all the transaction names in them and check to see if the transaction is running or not. what i am trying to do is not to have locks....just wanting to make sure that no one would run the same transaction twice. does anyone have any idea on how we can do this?
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Mar 11, 2008
If you ask a .net developer he would likely say that he uses System.Transactions to manage transactions, a DBA on the other hand places transactions within the T-SQL of stored procedures.
What rules do architects and others, use when determining if the transactions should be placed in:
.net Middle Tier Components using System.Transactions for example.
T-SQL Stored Procedures.
Both .net Middle Tier Components and T-SQL Stored Procedures.
Thanks in advance,
Doug Holland
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Nov 1, 2006
if i have a loop that runs through records in a dataset like thisfor(int i=0;i<ds.Tables[0].Rows.Count;++i) and in this loop i have several sql commands that run as a transaction in a try / catch block like : try{ // do stuff}catch{ trans.RollBack();}how can i keep the loop going even if a transaction failed. So the transaction works for each individual row. if row 100 fails for whatever i would like the loop to continue running, do i just simply remove the "throw" and it will continue looping ? my catch block currently looks like catch(Exception ex){transaction.Rollback();activity.Log("Transaction aborted, rolling back. Error Message: " + ex.Message + " Stack Trace: " + ex.StackTrace.ToString());throw; }thanks,mcm
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Nov 3, 2006
I have a class that use a TransactionScope object for make make two operations into a database. The problem is that in a computer works well but in another I receive a error message: "MSDTC is not running in .SQLEXPRESS". I had watched the services in the computer and the "Microsoft Distributed Transaction Coordinator" is running.
Does somebody know what is happening?
Thankyou and sorry for my English.
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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 14, 2007
hi all,
i'm developing a WebApplication with VisualStudio2005 (with C# code).i've defined a DataSet with some TableAdatpter. For each TableAdapter, i've definet some "customized" commands, performing specialized operations over the table on DB. (db is SqlServer2000).For each TableAdapter, i've set as "public" the connection, so that i can use it within my code for beginning a new transaction. Now, how can i set that transaction, to the specialized commands I defined for each TableAdapter?
Thanks all.Andrea.
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Feb 2, 2008
Hi Guys,
Im having trouble stopping a transaction once the result on one or more of my sql statements rolls back the transaction. Take a look at one my first 'IF' statement (below). If the parameter '@Return' is 'False' i want the transaction rolleback and all sql execution to stop. But my problem is the rest of the sql gets executed and i end up getting rubbish data. Im still new to transactions so i think im doing something really wrong. Please take a look at my sql and help me out in what ever way you think is best. thanks in advance.
MattBEGIN TRY
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
BEGIN TRANSACTION;
BEGIN
DECLARE @Return BIT;
SELECT @Return = (SELECT IsReturnable FROM INVENTORY WHERE InventoryID = 6)
IF (@Return = 'False') ROLLBACK TRANSACTION;
DECLARE @Already_In INT;
SELECT @Already_In = (SELECT ReturnedBy FROM InventoryInUse WHERE (CheckOutNumber = 375))
IF (@Already_In IS NOT NULL) ROLLBACK TRANSACTION;
DECLARE @Outstanding As INT;
SELECT @Outstanding = (SELECT (QtyTaken - 40) AS Outstanding FROM InventoryInUse WHERE (CheckOutNumber = 375));
DECLARE @OutstandingReason As VARCHAR(200);
DECLARE @Get_Person_ID INT;
Select @Get_Person_ID = (SELECT PersonID From [User] WHERE Username = 'matthewsk');
IF (@Outstanding < 0) ROLLBACK TRANSACTION;
ELSE IF (@Outstanding > 0)BEGIN
IF (@OutstandingReason = '') SELECT @RollBack = @RollBack + 1;
UPDATE InventoryInUse SET ReturnedBy = @Get_Person_ID, ReturnDate = GETDATE(), QtyReturned = 40, QtyOutstanding = @Outstanding, WriteOffReason = 'Testing This' WHERE (CheckOutNumber = 375);
UPDATE Inventory SET TotalQty = TotalQty - @Outstanding, QuantityInUse = QuantityInUse - (40 + @Outstanding) WHERE InventoryID = 6;
END;ELSE IF (@Outstanding = 0)
BEGIN
UPDATE InventoryInUse SET ReturnedBy = @Get_Person_ID, ReturnDate = GETDATE(), QtyReturned = 50 WHERE CheckOutNumber = 375;
UPDATE Inventory SET QuantityInUse = QuantityInUse - 50 WHERE InventoryID = 6;
END;
COMMIT TRANSACTION;
END;END TRY
BEGIN CATCH IF (XACT_STATE()) = -1
BEGIN ROLLBACK TRANSACTION;
END;
END CATCH;
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May 21, 2008
I am using SqlServer 2005 Express Edition. I have written a stored procedure that has a transaction to make sure that it rolls back in case of failure. Is there a way to test that the transaction works. I don't now how to cause an error that would cause the transaction to roll back and raise the error with the details of the exception.
Thanks,
laura
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Jan 9, 2004
I have a form that calls three separate queries to insert its contents in my database. The first query runs once and returns an identity value back to the calling code. Using this ID, it runs a foreach() on the selected items of two listboxes; running multiple inserts for each.
I want to group all of those inserts into a transaction that will rollback if any insert fails. I'm familiar with doing this in a stored procedure, but since this is a case where I can't use a single sproc I'm not sure exactly how.
I've been stumbling through using a SqlTransaction object and handling it from my code, but I can't seem to find much information on doing this. Any examples of a multiple query transaction using the SqlTransaction object would be very helpful.
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Mar 3, 2004
Lets say I have to insert 60,000 or so records into SQL Server from another data source using the sqlTransaction class.
However if at any point an error should occur I would like to roll back any changes.
Would a transaction be a bad idea when dealing with this many records?
Thanks for any advice.
SA
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May 6, 2004
Hello,
does the .NET framework support distributed transactions somehow?
The SqlConnection/SqlTransaction classes doesn't seem to support them...
TIA. -julio
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May 18, 2004
I´ve created a class to make some standard transaction development a little bit faster. The destructor seem to run, but something makes this object slow down the database, if SqlTransaction and/or SqlConnection isnt manualy handled with the method Commit(). Any ideas on how to handle the SqlTransaction and SqlConnection better?
public class DataTransaction
{
private bool blnError = false;
private ArrayList arrErrorList = new ArrayList();
private SqlConnectionobjConnection = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"].ToString());
private SqlTransactionobjTransaction;
public DataTransaction()
{
objConnection.Open();
objTransaction = objConnection.BeginTransaction();
}
~DataTransaction()
{
if(objTransaction.Connection != null)
{
objTransaction = null;
objConnection.Close();
}
}
public int ExecuteNonQuery(string Query)
{
int intRowsAffected = -1;
SqlCommand objCommand = new SqlCommand(Query, objConnection, objTransaction);
try
{
intRowsAffected = objCommand.ExecuteNonQuery();
}
catch(Exception e)
{
blnError = true;
arrErrorList.Add(e.ToString());
}
finally
{
objCommand.Dispose();
}
return intRowsAffected;
}
public System.Object ExecuteScalar(string Query)
{
System.Object objToReturn = null;
SqlCommand objCommand = new SqlCommand(Query, objConnection, objTransaction);
try
{
objToReturn = objCommand.ExecuteScalar();
}
catch(Exception e)
{
blnError = true;
arrErrorList.Add(e.ToString());
}
finally
{
objCommand.Dispose();
}
return objToReturn;
}
public bool Commit()
{
if(!blnError)
{
objTransaction.Commit();
return true;
}
else
{
objTransaction.Rollback();
return false;
}
objConnection.Close();
}
}
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