ACC: Explicitly Close Recordsets to Help Prevent Database Bloat

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Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. When you create a Recordset (or QueryDef) object in code, explicitly close the object when you are finished with it. Microsoft Access automatically closes Recordset and QueryDef objects under most circumstances; however, if you explicitly close the object in your code, you can avoid occasional instances when the object remains open. The following steps demonstrate closing the Recordset and QueryDef objects using DAO.

1. Start Microsoft Access.
2. Open the sample database Northwind.mdb.
3. Copy the following code to a new module:

      The following sample code opens and closes a Recordset and a QueryDef
      object and displays both Recordset and QueryDef information in message
      boxes.
   
       Sub CloseObjects()
          Dim db As Database
          Dim rs As Recordset
          Dim qd As QueryDef
   
          Set db = CurrentDb
          Set rs = db.OpenRecordset("Employees", dbOpenTable)
          Set qd = db.QueryDefs("Invoices")
   
          rs.MoveLast ' Move to the last record in the Recordset.
   
          MsgBox "The Employees Recordset is open." & vbcr & _
             "The last Employee ID is " & rs![EmployeeID] & "."
   
          Msgbox "The Invoices query definition is open." & vbcr & _
             "The first field in the query is " & qd.Fields(0).Name
   
          ' Explicitly close the Recordset and QueryDef objects.
          rs.Close
          qd.Close
       End Sub
   					

4. Run the CloseObjects subroutine.