Does a DB transaction get automatically rolled back during exception or we should explicitily write transaction .Rollback inside the catch block to rollback a transaction...
View 3 RepliesI just want to know the concept of commit Transaction and Begin Transaction in Asp.net with c# language, I have a certain code in c# given below... where I declare commit transaction and begin transaction. my code is:
public void dial(string traid, string trakey, string account, string ttref)
{
try
{
string[] result = new string[4];
SqlConnection sqlconn_cms = new SqlConnection(sqlconn_cmsstr);
[code]...
If my web method throws an exception, what is the best practice for passing that exception to the client?
View 1 RepliesI have written several queries under one single transaction. When any of the query throws an error then the whole transaction should rollback. However, in some rare cases say 2% cases even after the error the next transaction is getting comitted.
note that all transaction processes (opening, committing and rollback) is done through .net.
I am using 64bit windows 2003 for data and application server. And website is configured for runapp32on64.
Can I code to add transaction for some subs? If there is an error in any sub will roll back.For example, sub1 delete some tablessub2 insert data into tables which just be deletedsub3 send out confirmation emailsub4 make submit button disable
View 3 RepliesI would like to duplicate a table record but not all the columns.For example, Select from "TableA" Where recordid='1' AND insert into "TableA" All values except "col2" , "col3". I hope you got the idea. Could you please advise me what is the cleanest approach to get this done.
View 9 RepliesI have a transaction that has 5 update statements.I am checking that the data is the same as it was when i selected it before i change it, as this will be from a web app that many people could update.
I want to check that the rowcount is 1 everytime i make an update, if it is one then I want to move on, if not I want to rollback and return.
Here is what I have, only it it rolling back on the first attempt everytime.
[Code]....
I am not sure if rowcount is available yet, if not what do I need to use to find out if anyrows are being updated before moving on?
In sqlserver2005 how to handle exceptions in stored procedures and
1)redirect to other page
2)write in to log file
I was facing some serious deadlock issues in a high transaction table.For some select statement i have added nolock .But for few i can not put nolock, as i need accurate data.this select statement becomes a deadlock victim at times.
View 3 RepliesI have the web form whcih processing several web services calls.
If one call failed, it will rollback transactions. But it cannot.
Due to the web services will complete for each call.
I am using sql connection and sql command.
Is it possible to do this?
I code to exec a store procedre (sp_truncate) to truncate 10tables and using sqlBulkCopy to download a huge data. Both them are working fine.Now I want to use transaction with application (not in store procedure) torollback truncate tables if download is failed.Is it possible to use transaction to work with these two steps?
View 1 RepliesI'm doing a transaction type that is similar to iBank where people can add their payee. In my SQL database, I have a transaction table which has the date variable. I would like to set in a way that if the user did not express interests to activate the payee, the record will be expired after 1hour.
SELECT @Date = GETDATE()
SELECT @ExpiryDate = DATEADD(hh,1,getdate())
INSERT INTO PAYEETRANSACTION (CUSTID,PAYEETRANSTYPE,PayeeTranDetails,STATUS, PAYEEACCNUM,PAYEEACCTYPE,PAYEENAME,PAYERINITIAL,REF,Date, ExpiryDate)
VALUES
[code]...
I'm getting "This SqlTransaction has completed; it is no longer usable" exception when try to commit my transaction after sqlreader is close.Here is the code sample
[Code]....
...so when I get to commit the transaction it raises the mentioned exception: "This SqlTransaction has completed; it is no longer usable". I have also noticet that Command.Transaction becomes NULL after reader.Close()My question is: Can I use SqlDataReader and SqlTransaction ? Maybe to use BeginExecuteReader and EndExecuteReader ?
i am trying to compare four columns in two tables(both are in the same schema), table a has two columns for firstname and last name , table b has similar columns firstname and last name, i wish to compare both and if there are similarities, do nothing but if there are differencies, export or write them to a exception or error table.. not quite sure what if statement i should write or how to go about this.
View 6 Repliesi have a method that do bunch of inserts in a table
these inserts done through a transaction (with default isolation level)
meanwhile i need to read some committed records from this table by using another method, i create another transaction for 2th method with a ReadCommitted isolation level but it just fails and return a timeout error and also, the DoTransaction cause the entire table inaccessible, how could i apply a row-level lock ?
[Code]....
I've got an odd problem and can't figure out what's causing it. We've got 2 different DataSets in the same project and I'm seeing different generated code from the MSDataSetGenerator. Both projects are .NET Framework 4.
In one DataSet, I can open the .Designer.cs file and there's a line like:
[Code]....
This essentially exposes a Transaction property to any partial class I create so I can do with it what I want (by setting it to something).
In the other DataSet no matter what I try to do, this Transaction property never gets generated. I've right-clicked on both DataSets and chose "Run Custom Tool" to get them to regenerate (I've even tried deleting the .Designer.cs file before doing this) and they both get generated the same.
I tried to make sure all the properties of the DataSets were the same. Both are using .NET Framework 4.0 and VS2010.
The file that does not generate the Transaction was from a .NET 1.0 asp.net web site that has continually been upgraded through different .NET versions. Right now it's at 4.0 but I don't know if that would have anything to do with it.
I have a stored procedure which is part of the aspnetdb but i am using my own database and therefore these stored procedures are added on my sql server locally.So i uploaded the databases to my hosting company 1and1 and created the stored procedures and tables as those in aspnetdb but i get the error as in the title. this is a standard stored procedure which lives in the aspnetdb database but not sure why this is happeningthe code is below which is for aspnet membership createuser a standard stored procedure
[Code]....
I have enabled User Rolls and assigned several Roll names such as 10, 11, 12, etc. I have a SQL Table that contains various fields of information including one named AuthorizedUserRoll, it's nchar(2).
A logged in user should only see the records in Gridview that matches his/her roll.
I'm using Web Forms and VB.
I'm building the standard 3-tier ASP.NET web application but I'm struggling as to where to do certain things - specifically handling exceptions.
I've tried to have a look around on the web for some examples but can't find any which go as far as a whole project showing how everything links together.
In my data-tier I'm connecting to SQL Server and doing some stuff. I know I need to catch exceptions that could be raised as a result but I'm not sure where to do it.
From what I've read I should be doing it in the UI tier but in that case I'm not sure how to ensure that the connection to the database is closed. Is anyone able to clarify how to do this? Also if anyone knows as to where I could find an example 3-tier web application that follows best practices that would be great too.
I have a datasource that uses a business logic object for the select event. How can I catch an exception that occurs in the business logic layer and pass it to my presentation layer to display to the user in a label?
View 1 RepliesI've got all of my ASP.NET requests wrapped in a Session and a Transaction that gets commited only at the very end of the request. At some point during execution of the request, I would like to insert an object and make it visible to other potential threads - i.e. split the insertion into a new transaction, commit that transaction, and move on. The reason is that the request in question hits an API that then chain hits another one of my pages (near-synchronously) to let me know that it processed, and thus double submits a transaction record, because the original request had not yet finished, and thus not committed the transaction record.
So I've tried wrapping the insertion code with a new SessionScope, TransactionScope(TransactionMode.New), combination of both, flushing everything manually, etc. However, when I call Refresh on the object I'm still getting the old object state. Here's some code sample for what I'm seeing:
Post outsidePost = Post.Find(id); // status of this post is Status.Old
using (TransactionScope transaction = new TransactionScope(TransactionMode.New))
{
Post p = Post.Find(id);
p.Status = Status.New; // new status set here
p.Update();
SessionScope.Current.Flush();
transaction.Flush();
transaction.VoteCommit();
}
outsidePost.Refresh();
// refresh doesn't get the new status, status is still Status.Old
We have a asp.net application and want to implement logging. The first idea was to use the Application_Error method in the global.asax file.
The problem is that ASP.NET very often seem to throw exceptions internally that are not caused by the application and which seem not to interfer with the users normal workflow. For example we often get HTTPExceptions, UnauthorizedAccessExceptions and others caught in this method, although there is no real error in the application.
I set up a daily backup for our database, however I noticed that rather than creating a new file for each restore point, SQL server just appends to one back up file. This is an issue, IMO because what if that one back up file gets corrupted? Is there a way to back up to multiple files (one new file per day?)
View 2 Repliesi am coding fr taking databse backup frm my asp.net web application
i get the backfile in .bak form. how do i zip it. make it in zip form
I have a straight forward SP that throws a divide by zero error like:
[Code]....
Note that even though I am calling RAISEERROR() its not getting returned back to my code if I use this try catch. When I remove the try catch like above it returns fine. I made sure that the severity level is >= 11 so it's not ignored. At this point I'm out of ideas because everything I can find published seems to say that this should work.
FYI my C# code is pretty straight forward I don't think it has anything to do with it as I have a wide open Exception catch and it's never getting called so I'm not posting it to keep this message brief.