Hi
I want to know what is an Independent transaction in sql?? What is this?? Where we can use or where it is prffered to use them, is there any performance los if we are using these transactions?? means i wann know all about Independent transactions, I serched gooogle a lo but not able to find out anything usefull.
Please help me. thanks.
Hi!
We are migrating an DB2 database to sql server 2005. We have used the 1.2 jdbc driver. It consumes lots of memory when we have several resultssets opened on different statments. Then we tried JTDS (http://jtds.sourceforge.net/), it worked fine. It's supports concurrent staments. We would like to stick with microsofts driver. My question is: will we se this supported in microsofts driver (soon)!
Joachim
I am writing a SQLServer script that I want to be schema name independent. I mean I know that all users of the script will have the same tables, but not necessarily the same schema name.
When I hard code the script to use the name of my schema, wcadmin, it works OK.
CREATE FUNCTION wcadmin.dectohex(@a numeric)
RETURNS varchar(8)
BEGIN
DECLARE @x varchar(8)
DECLARE @y varchar(1)
DECLARE @z numeric
DECLARE @w numeric
SET @w=@a
SET @x=''
WHILE @w > 0
BEGIN
SET @z = @w % 16;
SET @y= CASE @z
WHEN 10 THEN 'A'
WHEN 11 THEN 'B'
WHEN 12 THEN 'C'
WHEN 13 THEN 'D'
WHEN 14 THEN 'E'
WHEN 15 THEN 'F'
ELSE CAST(@z AS varchar)
END
SET @w = ROUND(@w/16,0,1)
SET @x = @y + @x
END
-- Pads the number with 0s on the left
SET @x = RIGHT(REPLICATE('0',8) + @x ,8)
RETURN @x
END;
GO
select 'WTDOCUMENT' HOLDER,
dm.WTDocumentNumber ITEMNUMBER,
dm.name ITEMNAME,
ad.fileName ContentFilename,
fh.hostName VaultHost,
wcadmin.dectohex(fi.uniqueSequenceNumber) VaultFile,
fm.path VaultPath
from
WTDocument di,
WTDocumentMaster dm,
HolderToContent hc,
ApplicationData ad,
FvItem fi,
FvFolder ff,
FvMount fm,
FvHost fh
where di.idA3masterReference = dm.idA2A2
and fm.idA3A5 = ff.idA2A2
and fm.idA3B5 = fh.idA2A2
and fi.idA3A4 = ff.idA2A2
and ad.idA3A5 = fi.idA2A2
and hc.idA3B5 = ad.idA2A2
and hc.idA3A5 = di.idA2A2
DROP FUNCTION wcadmin.dectohex;
GO
But when I remove my schema name I get the error
'dectohex' is not a recognized built-in function name.
In this case I'm just using :-
CREATE FUNCTION dectohex(@a numeric)
.
.
.
.
select 'WTDOCUMENT' HOLDER,
dm.WTDocumentNumber ITEMNUMBER,
dm.name ITEMNAME,
ad.fileName ContentFilename,
fh.hostName VaultHost,
dectohex(fi.uniqueSequenceNumber) VaultFile,
.
.
.
.
DROP FUNCTION dectohex;
Creating and dropping the function seems to work OK when I drop the schema name, I just can't call it.
I've been trying various permutations of dbo and [dbo] prefixes unsuccessfully.
Any suggestions?
Thanks
David
I have defined the following to generate a matrix report
1. Row data: Country,region,state,Race,gender
(Red colored columns - Group1;
Blue colored columns - Group 2)
2. Column Data: Statistics as of (Date)
3. Value: household income
I'd like to be able to have a seperate drilldowns on group1 and group2. i.e drilling down on country, region, state shouldn't automatically expand/minimize race and gender. I played with the attributes of individual columns and edit groups of the same. But couldn't achive an independent drill down.
Income as of '05 Income as of '06
Country Region State Race Gender 100k 105k
Having independent drilldown on the group1 and 2 enables us to find out, for example, how many hispanics live in the region west coast. (in a typical tree like drill down, you need to expand country, region and state to get to Race)
How can create an independent drilldown on group1 and group2?
We have a critical Production database on which we want to setup Log-Shipping. We have also purchased the Symantec NetBackup utility for taking Backup to Tape Drives.
We Know that there are some inherent problems with using Log-Shipping and a Backup Strategy together, and thus we were finding out various ways in which we can run both in tandem.
One of them was taking the Symantec Log backups with Copy-Only option.
The main problem with this is that the Symantec Backups becomes dependent on the Log-Shipping Backups and also most of their Log-Backups become useless. Also, we are not sure whether the utility allows Copy-Only backups
The second alternative was to disable the Backup job of Log-Shipping on the Primary Server and to use the Log-Backups done by the Symantec utility for performing the Restores on the Secondary.
Thus, if Log-Shipping is scheduled to run say every 4 hrs, and the Symantec Log-backup happens every 1 hour, then at an interval of every 4 hrs, the Restore Job on the secondary will pick up the 4 backups done by the Symantec Backup utility and Restore each one of them in sequential manner.
But, I guess it is not easy to have a manual Restore Policy in place.
I was really banking on this solution until I found that the Restore Job of the Log-Shipping setup is dependent on the Filename of the Transaction log file which the systems generates automatically, and it won€™t be easy to create a customized Restore Job on the secondary server which takes in all the Log Backups generated by the Symantec Backup utility and Restore the Secondary database.
Have any one of you ever face this issue? Would like to know what is the best way to keep both of them running together.
Hi All-
It appears Microsoft has bundled SQL Server Compact Edition 3.5 SDK for C/C++ development as part of Visual Studio 2008 and is NOT available for download as an independent entity (as 3.1 SDK is).
Is there a work around?
Thanks.
I use the context connection for the "normal" work in the CLR procedure.
View 7 Replies View RelatedTime Price Volume
090048 510 6749
090122 510 2101
090135 510 1000
090204 505 2840
090213 505 220
090222 505 1260
090232 505 850
090242 505 200
090253 510 1200
090313 510 570
090343 510 250
090353 510 160
Criteria
Retrieve records with independent price and its total volume per minute
SELECT SUBSTRING(st,1,4) AS Ttime,d_price AS Price,SUM(l_cum) AS Volume FROM cmd4
WHERE sd='20060717' AND serial='0455'
GROUP BY SUBSTRING(st,1,4),d_price,l_cum
Result of the above query: -
Time Price Volume
0900 510 6749
0901 510 1000
0901 510 2101
0902 505 200
0902 505 220
0902 505 850
0902 505 1260
0902 505 2840
0902 510 1200
0903 510 160
0903 510 250
0903 510 570
THE FOLLOWING RESULT STILL NOT A TOTAL FOR A MINUTE]
E.G
0901 510 1000
+
0901 510 2101
=
0901 510 3101 <- I NEED THIS
Can any one advice or give me tips over this. Please
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
Hi,
I Have this simple convertion in a Script component
Dts.Variables("dateOfProcess").Value = CDate(lineMCF.Substring(30, 2) + "/" + lineMCF.Substring(28, 2) + "/" + lineMCF.Substring(24, 4))
this works fin in my development environment which has a spanish version of SQL Server and uses "DD/MM/YYYY" as date format.
but the production environment has an english version of SQL Server and "MM/DD/YYYY" date format, so the package crashes in this server.
How do I convert the string to date not depending on the SQL server language.
thanks.
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
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
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
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
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?
what is maximum limit of no. of transactions per sec. in sql server 2000
View 2 Replies View RelatedIs 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?
Are there any scenarios where an un-commited transaction would block further queries?
View 1 Replies View RelatedIf 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!
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
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
View 4 Replies View RelatedI 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;
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.
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?
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 ?
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
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.
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?
View 7 Replies View Related
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
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
View 4 Replies View RelatedI 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.
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?
View 3 Replies View Relatedhi 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.