SQL Transaction Rollback Failure
Nov 11, 2011
I have 2 tables which I want to insert data into, table "CAM" and table "COut", after inserting data in "CAM" it shall return a retAutoID which will be hand to "COut" as one of the parameter required for it's insertion. I implemented a rollback in my Business Logic such that if "Cout" hits an exception error while inserting, the previous insertion for "CAM" will rollback even if successful.With the code below, I am getting this error after trying to do perform insertion:"ExecuteNonQuery requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized." [code]
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Oct 31, 2011
I want to know that do you still need to rollback your transaction if you haven't commit the transaction that was created earlier.
[Code]...
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May 9, 2011
I get this error at the Commit of a transaction in a desktop application:
This OleDbTransaction has completed; it is no longer usable.
Other posts I have seen with similar error suggests this can occur if it takes a long time, or contains large amounts of data. This is not the case here.Logging tells me it takes 140 ms from Begin to Commit and about 10 commands executed inside the transaction.It is using an Oracle database.This class is a simplified version of my database class:
Class MyDatabase
Private mConnection AS OleDbConnection
Private mTransaction AS OleDbTransaction
[code]....
Is it not allowed to run a select inside a transaction like this? Or can it be done by running the transaction in a specific isolation level (I see that the BeginTransaction method has an optional parameter for doing this) ? ..Or some other sollution..? In my case, it was not a problem to move the select to run before the transaction started, but what if you need to run selects that must run inside the transaction?
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Apr 29, 2009
I've seen plenty of examples of transactions in the actual store procedure's SQL. But I'm wanting to do the transaction and keep track of it in code. I tried this but it says that my insertcommand's transaction object is null. How can I fix this?
vb Dim conn As SqlConnection = DBConnections.SQLServerConnection
conn.Open()
Dim params(1) As SqlParameter
[CODE]....
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Mar 5, 2009
What is this kind of exception?
Error : Execute requires the command to have a transaction object when the connection assigned to the command is in a pending local transaction. The transaction property of the command has not been initialized..
This one causes the error: Dim oOperation As COperationOutputTypeBS
oOperation = COperationOutputTypeBS.GetOperationOutputType(txtOperationCode.Text)
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Mar 31, 2009
I have a page in which there are 3 sections.In the first section,i have some details to save in the Database.I am saving these details through a StoredProcedure(sql) named Procedure1.The details are stored in a table named Table1.There is a Primary key in the table named "ID".This "ID" is inserted automatically in the table.In the second and third sections, i have Grids for Data Manipulation.The Details are inserted in tables Table2 and Table3 through StoredProcedures(sql),Procedure2,Procedure3 recpectively.The "ID" which is generated automatically in Table1 needs to be inserted in Table2 and Table3.How can i do this?The Details in Table1 should get Rollback when corresponding data is not inserted in Table2 and Table3,ie. these 3 sections are to be inserted simultaneously.Now I have created a StoredProcedure in which i have combined all the 3 procedures.
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Jun 22, 2010
my concern is tht i have a application with mail for my intranet users. Now I wld like to rollback or undo my sent message within a short interval say bfore a minute , i can or should undo . But im confused where to start from .....i need u guyz to just show me the correct way , i will try and do it by ma self
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Mar 29, 2012
I hope that someone help me , i have a form , a datagridview bound to datatable and a button named " Cancel "
What i want is when user add or change data in specific cell in current row in datagridview and click on a button " Cancel " the changes he made disapear (clear the row in case the user add new row ) or restoring original data when user makes change in existing data.i'm working with sql server 2008 database and visual basic 2010
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May 6, 2009
I used code below to run rollback but in catch block, a warning message said that thistransaction used before has being assigned a value. How to void it?
Dim thisConnection As New SqlConnection("server=(local)SQLEXPRESS;" & _
"integrated security=sspi;database=MyDatabase")
Dim sql As String = "DELETE FROM Employee " & "WHERE ID = 10"
[code]....
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Apr 1, 2010
I'm about to try something new in my VB2008 project, but not sure if it will work. Is it possible for me to set a "checkpoint" of the current solution code, so that I could "roll back" if necessary?
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Mar 10, 2010
I am working on a Vb.Net application . I have a compose message web form where users will compose a message , but after the users click the send button I am inserting in the message table. All is working fine , infact great . Now I am thinking of adding a undo button where I will show this button if the user will click the send button . If the user clicks the send button and leaves the undo button the insert query will be fired. But if the user clicks the send button , but then he clicks the undo button the the insert query should not be fired or it should be rolled back ...or something ...I mean the user should be back on his compose message state as before.
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Aug 10, 2011
When writing gridview Event, We must write the Commit and Rollback in event. Can not run the Event if don't write Commit. I want to know what for writing commit and rollback???what a differences between commit and rollback?
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Nov 24, 2011
I would like to use the transactions commit/rollback against a sql server rdbms within a VB 2010 module. I understand how these can be executed within a Transact-SQL session, but cannot seem to be able to code them correctly within VB as these are more like DDL statements.
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Oct 22, 2009
I have a 2 files here. One is my main form, and the other is a dialog I made. Now I'm trying to get enter code here the dialog to gradually obtain its transparency from a timer which I have on the dialong form:
If Me.Opacity = "100" Then
Timer1.Stop()
Timer1.Enabled = False
Else
Me.Opacity = Me.Opacity + 1
[Code]...
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Sep 19, 2010
I have an app and it fails randomly sometimes because my internet is not so fast (my app uses the webbrowser). How can I make my app restart itself it it fails? Or make my app click button1 on my form if it fails.
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Aug 16, 2010
I'm having an odd problem with an ASP.Net page.I'm getting an object not set error message when assigning a string literal to a variable. [code] And here is the code that the error is pointing to. The last line in this fragment is the line 10 the error is complaining about [code] It seems it fails on accessing any reference type, even if it is declared locally in the load function. I originally found the problem when Request. IsSecureConnection was nulling out on me. I eventually discovered I could replace it with the above code and fail in the same way. The problem does not always happen. It seems to be triggered by publishing an update from Visual Studio, or when I head home for the day and the server sits idle all night. One or two app pool recycles seems to clear it up, and the page functions correctly. I've been doing desktop development for a few years, but I'm fairly new to web development.So maybe this is something obvious I've got configured wrong. I'm currently using .Net 4 on IIS 6. That code is in a foreach over an IEnumerable(of XElement). The stack trace still points to the string assignment, but all other stack traces are spot on, so I don't think it's a bad pdb.Also, when the error occurred this time, no amount of recycling the app pool or stopping and starting it would fix the error. I finally got it working again by switching the application to a different app pool.
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Jul 29, 2011
I am trying to make a currency converter from a webservicex service - although it does take some time to load
Are there any other services i can use: if not what is the problem here...
The code i use goes to the right URL and displays something like this.[code]...
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Jan 9, 2012
I've stress tested the code below and it seems to work fine - what are the dangers of not locking in the simple case where there is a single thread writing and a separate thread reading a simple variable? Have a class that has a public property...
[Code]...
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May 10, 2009
I have a project with sql database and customer require to create this function .I mean when user use my program , they can delete, edit... but not still save yet. Suddenly power failure , and i want to recovery database when user turn on program again.
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May 17, 2010
I am currently using the follwoing in my install routine, the idea is to check if the db exists. if the db does exist then leave the mdf name as is and attach it as a temp db then i can run a compare between the 2 db. however if the db does not exist i want to rename the mdf and attach it. however after renaming the mdf i cant attach the file.[code]
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Sep 29, 2009
How to handle the Network failure error message,and how to simulate it?
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Jun 28, 2011
I have an email function that needs to embed images into the email. I get the mailinto my pickup but the mail still asks me to "Show Images/Download Images". Some howthe images are not being properly embedded.I'm not sure what needs to be changed the examples I find on a lot of sites is very basic and vague.Additional info for clarity: This function will either download the images via url or embed them. This is determinedvia an external xml parameter. The physical path for the images, which replaces the URLs, is also in the xml.
[Code]...
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Aug 25, 2010
I am trying to send email messages from a Windows based Visual Basic application. I am using Visual Studio 2008 and .NET 3.5. The IP address in the config file is correct. But this gives an error message: Failure sending mail.
Code:
Dim Mail As MailMessage
Dim MailClient As SmtpClient
MailBody = "Test email"
[Code]......
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Oct 15, 2009
I have two forms. the first form saves a decimal number and could also retrieve it. the second form just retrieves the number from the database. on the first form, i successfully retrieved the number with the decimals included. but on the second form, the number retrieved is displayed as a rounded up whole number. i tried to copy the codes of the first form but it still displays the rounded up number.
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May 10, 2010
I'm getting a generic failure on line 24 (objPrinter.Put_).
The port creates properly and I have the driver on the target computer.
I have admin rights on the target computer.
Set WSHNetwork = WScript.CreateObject("WScript.Network")
set shell = WScript.CreateObject( "WScript.Shell" )
Set objWMIService = GetObject("winmgmts:\<<SERVERNAME>>
[Code].....
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Jan 8, 2010
I can't get VB.Net to publish my current project, it can't find SETUP.BIN.It looks for SETUP.BIN in the directory where I have my application, not Program Files Windows SDK .. etc.If I move the ENGINE directory of the SDK path to my directory, it finds SETUP.BIN but not SIGNTOOL.EXE I've got VS 2008 on XP Pro SP2 using .Net 2.0 and Oracle - It all works fine with a BUILD out of VS 2008.
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Jul 16, 2011
Inner exception is "Unable to connect to remote server". I don't understand what I did wrong[code]....
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Mar 18, 2010
with vb.net 05 + access 03 how can i use parametrized append query via vb.net 2005..i don't know hence i used this code but this code is working fine but only the first row is appending equal to the number of records (i loop variable)[code]
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Nov 28, 2009
I can download the file in internet explorer, firefox and etc. browser, but when I try the following code to get my file from ftp, it cannot get the file..
Dim clsRequest As FtpWebRequest = CType(FtpWebRequest.Create("ftp://xxx.com/ftp/demo/xxx.exe"), FtpWebRequest)
clsRequest.Method = WebRequestMethods.Ftp.DownloadFile
[Code].....
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Sep 8, 2010
I am about to put my fist through my monitor!!! I have been working on this for the better part of 2 days. Here's the issue: I'm in an Enterprise environment and am writing an app that will shoot off small emails. I got the settings I needed yesterday and got everything to work 5 times in a row! Then, I went to another task for a little while and came back to the email portion and ran another test and it never worked again! I've written and re-written my code 100 times. I can't get it to work. Here's one version of my
[Code]...
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