[nhibernate-issues] [NHJIRA] Commented: (NH-2107) Database connection is not closed after rollback in TransactionScope

[Sam R. (JIRA) <nh...@gm...>]

    [ http://216.121.112.228/browse/NH-2107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=19634#action_19634 ] 

Sam Ritchie commented on NH-2107:
---------------------------------

>From MSDN (http://msdn.microsoft.com/en-us/library/ms172152%28VS.90%29.aspx):

"The TransactionScope class provides a simple way to mark a block of code as participating in a transaction, without requiring you to interact with the transaction itself. A transaction scope can select and manage the ambient transaction automatically. Due to its ease of use and efficiency, it is recommended that you use the TransactionScope class when developing a transaction application.

In addition, you do not need to enlist resources explicitly with the transaction. Any System.Transactions resource manager (such as SQL Server 2005) can detect the existence of an ambient transaction created by the scope and automatically enlist."

If NHibernate supports TransactionScope, this is how I would expect it to operate - I should never need to use NH transactions directly.

> Database connection is not closed after rollback in TransactionScope
> --------------------------------------------------------------------
>
>                 Key: NH-2107
>                 URL: http://216.121.112.228/browse/NH-2107
>             Project:  NHibernate
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.1.2.GA
>            Reporter: William Lai
>         Attachments: ProgramToReproduce.zip
>
>
> .Net Framework Version: 3.5
> Database: SQL Server 2005
> We have just migrated from version 1.2.1 to 2.1.2GA since we need to integrate multiple layer of components using the TransactionScope. After some testing, we find that the database connection increases continuously after every transaction rollback. At the end, all the connections in the connection pool are used up. The problem does not occur in commit case. 
> Here is the testing code:
>             ISession session = null;
>             Test test = null; // Database object
>             using (TransactionScope scope = new TransactionScope())
>             {
>                 session = NHibernateHelper.OpenSession();
>                 Test test2 = new Test();
>                 test2.Name = DateTime.Now.ToString();
>                 session.SaveOrUpdate(test2);
>                 //scope.Complete();
>             }
> After running the above case, a new connection will be used in SQL Server. The connection will not free up in SQL Server until we close our application.
> Any advise for the problem? Thanks in advance.

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