Question

VB.net SQL server connections problem - how to close connection

Asked by: CraigLazar

Hi,
I a using VB.net 2005 and i have a class in my app which i use to create a sql connection.
So in the rest of my class's/forms ect i create a new reference to my db class call a function and it returns an open SQLConnection.
I have made sure that all the calling functions at the end in my try Catch Finally statement i do th efollowing
            DBConnection.Dispose()  'SqlConnection variable declared Locally to the calling function
            DBConnection = Nothing
            DB_Connect = Nothing 'This is the Class instance name
Now from what i have read, a sqlconnection is an "UnManaged" resource and thats why i need to use the dispose method first.
The problem comes in when i open the SQL Activity Monitor, it shows a whole list of connections to my database and they are in the sleep state.
Then after say 5 minutes they disappear from the list.
So i am unsure of a few things here
1. Am i closing my sql connection objects/refereces from my code correctly
2. Does SQL Server run its own type of "GAC" and removes dormant or sleeping connections after a specific time?
3. By using the dipose and set to nothing commands, should that not immediately close those connections in the Activity Monitor
4. Or is this normal what i am experincing and should not worry?
As i have created a multi threaded service so i need to make sure i clean up correcly

thanks

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Asked On
2009-01-07 at 06:49:39ID24031551
Topics

Microsoft Visual Basic.Net

,

Microsoft Visual C#.Net

,

SQL Server 2005

Participating Experts
3
Points
400
Comments
9

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Expert Comment

by: rionrocPosted on 2009-01-07 at 06:57:01ID: 23315185

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by: crazymanPosted on 2009-01-07 at 07:17:12ID: 23315468

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by: gregoryyoungPosted on 2009-01-07 at 07:19:03ID: 23315490

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by: CraigLazarPosted on 2009-01-07 at 23:57:40ID: 23322853

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by: rionrocPosted on 2009-01-08 at 03:38:19ID: 23323963

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by: CraigLazarPosted on 2009-01-08 at 07:02:54ID: 23325551

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by: gregoryyoungPosted on 2009-01-08 at 08:08:06ID: 23326368

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by: rionrocPosted on 2009-01-08 at 08:41:20ID: 23326794

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by: CraigLazarPosted on 2009-01-19 at 04:47:19ID: 31531835

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