Connection pools constantly grow

I've got a little console app that basically pulls back a recordset from our SQL Server 2005, goes through each row in the dataset and may/may not insert a record into a different table in the database. We use sproc's for every transaction and I close every connection in the application. However, when the application ends, I still show connection pools open in the performance monitor. Same with websites that I know have no traffic or that have been stopped by me in IIS.

Last night I showed a total of 6000+ "Current # pooled and nonpooled connections". Should I be worried about what seems to be unending growth in the connection pools? If so, how can I look to manage this better?

Check the following article:

http://www.15seconds.com/Issue/040830.htm

Regards

|||

I actually read that article yesterday.

Perhaps I'm dealing with a connection leak. If so, I don't know how. All my transactions are either handled via:

Try SqlConnection.Open() SqlCommand.ExecuteNonQuery()Finally SqlConnection.Close()End Try

Or

Try SqlDataAdapter.Fill(DataSet,"Results")
Finally
 If SqlConnection.State = ConnectionState.OpenThen SqlConnection.Close()End If
End Try

My program uses two databases, which means that there are two connections strings. That accounts for the reason the program creates 2 connection pools when it runs, but why aren't those pools closed when the program finishes? Next time the program runs, it's increased by 2 again.

sqlsql

connection object to client ce

yo ce folks... Anyone had any trouble using a dataset for return values in a datagridview for the client app?

trying to make this work...

' Open the Connection For SQL Compact Edition

Dim cn As New SqlServerCe.SqlCeConnection("Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf")

Dim cmdProduct As SqlServerCe.SqlCeCommand

' create dataset with table

cn.Open()

cmdProduct = cn.CreateCommand

cmdProduct.CommandText = "SELECT ProductDesc AS Description, ProductCost AS Cost, ProductListPrice AS [List Price] FROM Product"

Dim daProduct As New SqlServerCe.SqlCeDataAdapter(cmdProduct)

Dim dtProduct As New Data.DataTable("Product")

daProduct.Fill(dtProduct)

Dim ds As New DataSet

ds.Tables.Add(dtProduct)

'' FILL DATAGRIDVIEW

Me.dbGridProducts.DataSource = ds

I have this working:

' search product description

Dim reqProductSearch As String

reqProductSearch = tstxtSearchDescription.Text

' Open the Connection For SQL Compact Edition

Dim _conn = New SqlCeConnection("Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf")

Dim cmd As New SqlCeCommand()

cmd.Connection = _conn

cmd.CommandText = "select ProductDesc as Description, ProductCost as Cost, ProductListPrice as [List Price] from Product where ProductDesc like '%" & reqProductSearch & "%' ORDER BY ProductDesc"

_conn.Open()

Dim resultSet As SqlCeResultSet

resultSet = cmd.ExecuteResultSet(ResultSetOptions.Scrollable Or ResultSetOptions.Updatable)

'' FILL DATAGRIDVIEW

dbGridProducts.DataSource = resultSet

With dbGridProducts

.Columns("Description").Width = 550

End With

Thanks,

Bill

Hi,
did you try binding the table to the grid rather the dataset ? Did you get an error message on the first solution ? And why are you creating a dataset first just for binding ?
Jens K. Suessmeyer.

http://www.sqlserver2005.de
|||

hi... on the first solution when i'm getting

(ArgumentException was unhandled) Child list for field ProductDesc cannot be created when i use either ProductDesc or just Description as it would be in a a regular dataset like in SQLExpress... etc...

Dim ds As New DataSet

ds.Tables.Add(dtProduct)

Me.dbGridProducts.DataSource = ds

Me.dbGridProducts.DataMember = "Description"

this fails... i need the dataset for grouping and such and would like to know how it's done with CE...

Thanks,

Bill

|||

got my brain back... DataTable and Dataset examples... :)

'To Open the Connection To Connect to SQLCE

Dim ConsqlCombo As New SqlCeConnection

ConsqlCombo.ConnectionString = "Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf"

'SQL STATEMENT......

Dim reqSQLCombo As New SqlCeCommand

reqSQLCombo.CommandText = "select ProductDesc as Description, ProductCost as Cost, ProductListPrice as [List Price] from Product where ProductMfgID = '" & reqSearch & "'"

reqSQLCombo.CommandType = CommandType.Text

reqSQLCombo.Connection = ConsqlCombo

'CREATE NEW SQL DATA ADAPTER

Dim sqldaCombo As New SqlCeDataAdapter(reqSQLCombo)

Dim sqldsCombo As New DataSet

' FILL DATASET

sqldaCombo.Fill(sqldsCombo, "ProductDesc")

'' FILL DATAGRID

dbGridProducts.DataSource = sqldsCombo.Tables("ProductDesc")

dbGridProducts.DataMember = "ProductDesc"

connection object to client ce

yo ce folks... Anyone had any trouble using a dataset for return values in a datagridview for the client app?

trying to make this work...

' Open the Connection For SQL Compact Edition

Dim cn As New SqlServerCe.SqlCeConnection("Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf")

Dim cmdProduct As SqlServerCe.SqlCeCommand

' create dataset with table

cn.Open()

cmdProduct = cn.CreateCommand

cmdProduct.CommandText = "SELECT ProductDesc AS Description, ProductCost AS Cost, ProductListPrice AS [List Price] FROM Product"

Dim daProduct As New SqlServerCe.SqlCeDataAdapter(cmdProduct)

Dim dtProduct As New Data.DataTable("Product")

daProduct.Fill(dtProduct)

Dim ds As New DataSet

ds.Tables.Add(dtProduct)

'' FILL DATAGRIDVIEW

Me.dbGridProducts.DataSource = ds

I have this working:

' search product description

Dim reqProductSearch As String

reqProductSearch = tstxtSearchDescription.Text

' Open the Connection For SQL Compact Edition

Dim _conn = New SqlCeConnection("Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf")

Dim cmd As New SqlCeCommand()

cmd.Connection = _conn

cmd.CommandText = "select ProductDesc as Description, ProductCost as Cost, ProductListPrice as [List Price] from Product where ProductDesc like '%" & reqProductSearch & "%' ORDER BY ProductDesc"

_conn.Open()

Dim resultSet As SqlCeResultSet

resultSet = cmd.ExecuteResultSet(ResultSetOptions.Scrollable Or ResultSetOptions.Updatable)

'' FILL DATAGRIDVIEW

dbGridProducts.DataSource = resultSet

With dbGridProducts

.Columns("Description").Width = 550

End With

Thanks,

Bill

Hi,
did you try binding the table to the grid rather the dataset ? Did you get an error message on the first solution ? And why are you creating a dataset first just for binding ?
Jens K. Suessmeyer.

http://www.sqlserver2005.de
|||

hi... on the first solution when i'm getting

(ArgumentException was unhandled) Child list for field ProductDesc cannot be created when i use either ProductDesc or just Description as it would be in a a regular dataset like in SQLExpress... etc...

Dim ds As New DataSet

ds.Tables.Add(dtProduct)

Me.dbGridProducts.DataSource = ds

Me.dbGridProducts.DataMember = "Description"

this fails... i need the dataset for grouping and such and would like to know how it's done with CE...

Thanks,

Bill

|||

got my brain back... DataTable and Dataset examples... :)

'To Open the Connection To Connect to SQLCE

Dim ConsqlCombo As New SqlCeConnection

ConsqlCombo.ConnectionString = "Data Source = " & Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & "\ffgsCRM.sdf"

'SQL STATEMENT......

Dim reqSQLCombo As New SqlCeCommand

reqSQLCombo.CommandText = "select ProductDesc as Description, ProductCost as Cost, ProductListPrice as [List Price] from Product where ProductMfgID = '" & reqSearch & "'"

reqSQLCombo.CommandType = CommandType.Text

reqSQLCombo.Connection = ConsqlCombo

'CREATE NEW SQL DATA ADAPTER

Dim sqldaCombo As New SqlCeDataAdapter(reqSQLCombo)

Dim sqldsCombo As New DataSet

' FILL DATASET

sqldaCombo.Fill(sqldsCombo, "ProductDesc")

'' FILL DATAGRID

dbGridProducts.DataSource = sqldsCombo.Tables("ProductDesc")

dbGridProducts.DataMember = "ProductDesc"