SQL Server :: How To Prevent Deadlock
Sep 28, 2010how to prevent deadlock? read from other forum knowing that even a simple select statement will cause deadlock, but i confuse on how can i prevent it?
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SQL Server :: Deadlock Sql Exception?
Jan 7, 2011My application is a survey application and I am using asp.net 2.0 and sql server 2005 version. There are many users taking survey at a single point of time. Some times delock is coming at a single method where i am deleting some records in a loop one by one(This delete statement may be executed for about 20 question in a page). This is a simple delete statement as below
delete table_name where column_name1='' and column_name2=''
column_name1 has foriegn key constraint, column_name2 also has foriegn key constraint.
The exception is as below.
Transaction (Process ID 204) was deadlocked on lock | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction
SqlBulkCopy Causes Deadlock On SQL Server 2000?
May 12, 2010I have a customized data import executable in .NET 3.5 which the SqlBulkCopy to basically do faster inserts on large amounts of data. The app basically takes an input file, massages the data and bulk uploads it into a SQL Server 2000. It was written by a consultant who was building it with a SQL 2008 database environment. Would that env difference be causing this? SQL 2000 does have the bcp utility which is what BulkCopy is based on. So, When we ran this, it triggered a Deadlock error.
Error details: Transaction (Process ID 58) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
I've tried numerous ways to try to resolve it. like temporarily setting the connection string variable MultipleActiveResultSets=true, which wasn't ideal, but it still gives a Deadlock error. I also made sure it wasn't a connection time out problem. here's the function.
/// <summary>
/// Bulks the insert.
/// </summary>[code].....
SQL Server Deadlock While Inserting Rows In A Table
Oct 15, 2010The topic of sql server deadlock has been discussed many times, however, I was unsure that even two simultaneous inserts on a table can end up in a deadlock situation. Scenario: While testing our application (SQL Server 2005 as backend, ASP.net 3.5) we inserted records into a table simultaneously (simplified overview) and that resulted into a deadlock for more than 70% of users.
I could not get a hang of this as how an insert is being deadlock as this is not a case of multiple resources. After a detailed analysis (of reproducing the bug by two users) I found that both the processes were holding a RangeS-S lock on the primary key index of the table and were trying to convert this into RangeI-N lock, that resulted into a deadlock and one transaction being killed.
Question: Can we avoid or reduce these kind of deadlocks as this is not a case of change in order of access of resources? Cant' we force the transaction to get exclusive lock initially so that it blocks the other process and avoid deadlock? What (adverse) effects that may have? Also could some one explain more about RangeI-N lock.
Isolation Level for this was "Serializable".
DataSource Controls :: Recreate Deadlock In A Sql Server 2008 Database?
Jan 12, 2010a script which creates a deadlock in a Sql Server 2008 database?I want to do a trace in a customer environment using a trace flag but first I want to test it in my own environment.
View 4 RepliesDataSource Controls :: Sql Server Deadlock / Only Inserting/updating Data Into A Table
Jun 11, 2010I m getting following error in my eventvwr . I couldnt find reasons of the following error.
"Transaction (Process ID 110) was deadlocked on lock | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction. "
The only thing my page is doing is inserting/updating data into a table in sql and the thing I can think of is because multiple users are using the same page to insert/update data? Will that cause deadlock?
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Jan 18, 2010I would like to know how deadlock is happen, i have facing alot of sql deadlock in my event handle on server computer.
View 3 RepliesSQL Server :: Communication Buffer Resources With Another Process And Has Been Chosen As The Deadlock Victim. Rerun The Transaction
Nov 15, 2010While updating table Un handled exception was raised (asp.net with c# and SQLServer 2005)
Error Message: "Transaction (Process ID 91) was deadlocked on lock | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction."
C# - Why Do Nested Locks Not Cause A Deadlock
Feb 17, 2011Possible Duplicate:
Re-entrant locks in C#
Why does this code not cause a deadlock?
private static readonly object a = new object();
[code]....
DataSource Controls :: Deadlock Transactions?
Feb 1, 2010I have two databound controls on one page. GridView, DropDownList. My page is crashing with a SQL Transaction deadlock victim error. I would like to capture this error, and attempt to re-databind the controls. My first thought was to handle an event on the controls that allow me to do this, but I don't see which event to handle. I couldn't search any answers. Where should I begin?
View 3 RepliesDataSource Controls :: Will Trigger Still Fire After A Deadlock
May 14, 2010If an insert statement is the victim of a deadlock, will an insert/update trigger still be fired?
View 3 RepliesDataSource Controls :: DeadLock In Sql/ High Transaction Tables?
May 7, 2010I 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 RepliesSQL Server :: How To Prevent Inserting Record
Aug 14, 2010Students can subscribe for any project via a webform. Table 'project ' contains all the proposed project and table 'student' contain the name of the student and the project-id.Now, suppose there is a limit of 4 students for project 'A' and there are already 3 subscribed students for that project. One more student can choose that project. The code-behind checks whether the limit is not reached (by counting the amount students for that project in table 'student') before inserting that student in the table 'student'.
My problem is that when two students fills the webform for the same project and click on the 'save-button' exactly at the same time, the code has no time to check the limit and both students are inserted into table 'student'. Is there a way to lock the table or something in order to preventing this?
[Code]....
Prevent Download Any Files (specially Swf) From IIS Server?
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so that the swf file can be viewed from my page only as provide the password
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I have decided the best setup would be to place the audio files on the server. I would then store the audio information, as well as the path to the audio file, in a database. I had thought about placing the audio files in the database as a BLOB, but it seemed inefficient. My concern, is with tools like Mozillza plug-in "Download Helper" , it is so easy to simply grab the media files off the server. This would not be a big deal, except we want to sell the full-length audio files. I am running ASP.NET 3.5 on IIS 7.
Is Setting The Value Of Server.ScriptTimeout Enough To Prevent Page Timeouts
Dec 20, 2010On an administrative page with a long running process we're setting the following:
protected void Page_Load(object sender, EventArgs e)
{
this.Server.ScriptTimeout = 300;
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Is this enough that should prevent that page from timing out as it does what it needs to? I have no control over the process and how long it runs but we've found that 5 minutes is more than enough time, yet we're still getting intermittent errors of:
System.Web.HttpException: Request timed out.
We've tried upping the value to 600 with really no difference and in any testing we've done we can never get the actual process to run for that long. Is there elsewhere that we need to be setting timeout values that won't affect the entire application and only the specific page we need the longer timeout value on?
SQL Server :: Prevent Injection When Using Values From A ListBox In The Query?
Sep 10, 2010I'm using a List Box to get multiple values that will be used in a query.I can loop over the List Box and create the string.i.e. 'blue','red','purple'The string is used in the query: SELECT * FROM TABLE1 WHERE COLOR IN('blue','red','purple'). Is there a way to parametrize multiple values? @COLOR='blue','red','purple'What will be the best practice to prevent SQL injections in this scenario?
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Jan 13, 2011I have the following procedure and noticed during my first test that my first insert worked, but due to table design issue with the 2nd insert it failed. When i checked only 1 table had been updated.. i cant have that once its in production.
So can someone suggest on how i can improve the logic so that both inserts have to work or none at all.. We cant have broken links between the tables.
[Code]....
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Nov 3, 2010how i will prevent user to resend data from refreshing URL. actually after posting data to the server and returning back data by the server to the client. if user refresh the url address then again it send back to the server withe previous data. so how can i prevent it by c#, asp.net.
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Access :: How To Hold An SQL Table In Code To Prevent Repetitive Visits To Server
Aug 9, 2010I have a table for labels in SQL server, in this table i hold all the text for all the labels i use in my website. The reason i am doing this is because i creating a bilingual site, which will display two languages on one page at the same time. The other language being arabic.
So what this means is that whenever a page loads, it needs to go and fetch the text of the labels from the database to display them on the page.
the way i have done this is that i have created a class called labels, and in this class i have created two methods, one called GetEnglishLabel(ID) and the Other Called GetArabicLabel(ID). Both methods take an ID, which corresponds to the id in the sql server database. Each of these functions is using LinqToSql to get the text for the label for the given ID.
My problem is that for every label i need to call this function, so as you might imagine on one page i might have over a hundred calls to these functions on page_load.
DataSource Controls :: Prevent Server/Database To Have SQL Stored Procedures Encrypted?
May 13, 2010I have access to two servers, one with my development database on, and another with the live database on.
All SQL Stored Procedures, Functions, Views are encrypted on the live database (using WITH ENCRYPTION in my query)
However I'm concerned I might accidentally encrypt a bunch of SProcs on my development database meaning I can no longer view/edit that code.
I have full control over the server and database, and was wondering if there is a way I can prevent these from being encrypted, therefore throwing up an error when this is attempted?
SQL Server :: Write A Stored Proc To Prevent Multiple Users In Uploading The Reports At A Time?
Aug 11, 2010I wanted to know how to prevent more than one user from uploading the report at a time .
This is a Windos based app written in c# . When User A clicks Upload option on one server from the menu to upload the files and at the same time when User B clicks Upload option on different server , User B should be alerted a message saying "User A's uploading is in progress,pls wait" . How to achieve this, with the code..I am thinking this logic should be kept in a stored proc, How do I write that proc?
What Can Prevent Session
Jan 15, 2010I built a small ASP.NET application. It has a global.asax and sets some session variables on Session_Start(...).What could prevent (all) session variables from not being set? Would a session time out do it? What if JavaScript turned off? What else can do it?
View 2 Replies.net - How To Prevent Go To The Top Page
Mar 27, 2011Possible Duplicate:scroll go to the top page how i can prevent go to the top page when post back page (asp.net)
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