Article ID: 2537914 - View products that this article applies to.
Consider the following scenario:
You have a standard Team Site and you create a new workflow using SharePoint Designer 2007 using a site owner account EXCEPT SharePoint System (see http://support.microsoft.com/kb/953289
The workflow is set to start "On Item Creation"
Only action configured for the workflow is Pause for duration - set duration 0 min.
You open the site in Internet Explorer as Contributor and create a list item to trigger the start of the workflow .
The workflow starts and logs a "request not found" error. The workflow runs to completion.
The error in ULS resembles :
ERROR: request not found in the TrackedRequests. We might be creating and closing webs on different threads. ThreadId = 15, Free call stack = at Microsoft.SharePoint.SPRequestManager.Release(SPRequest request) at Microsoft.SharePoint.SPSite.Close() at Microsoft.SharePoint.SPSite.Dispose() at Microsoft.SharePoint.Workflow.SPWorkflowAutostartEventReceiver.AutoStartWorkflow(SPItemEventProperties properties, Boolean bCreate, Boolean bChange, AssocType atyp) at Microsoft.SharePoint.Workflow.SPWorkflowAutostartEventReceiver.AutoStartWorkflow(SPItemEventProperties properties, Boolean bCreate, Boolean bChange) at Microsoft.SharePoint.Workflow.SPWorkflowAutostartEventReceiver.ItemAdded(SPItemEventProperties properties) at Microsoft.SharePoint.SPEventManager.RunItemEventRe…
In this scenario, the behavior is by design. In general this is an indication of a risky coding pattern, which is why there’s a warning, but in this case it is less clearly an indicator of a specific issue. The risk is only partially that of a memory leak, in that passing objects around between threads unexpectedly reduces the ability of our framework code to ensure that resources like SPRequest objects aren’t leaked (particularly in error situations).
If the occurrence cannot be associated to a memory condition, the message can be safely ignored. Use the performance monitor to assert whether or not the memory condition exist.
Tune Web server performance (Office SharePoint Server)
Best Practices: Using Disposable Windows SharePoint Services Objects
Development Tools and Techniques for Working with Code in Windows SharePoint Services 3.0
(http://go.microsoft.com/fwlink/?LinkID=101494&clcid=0x409)(Part 1 of 2) (http://go.microsoft.com/fwlink/?LinkID=101494&clcid=0x409)
Best Practices: Common Coding Issues When Using the SharePoint Object Model
(http://go.microsoft.com/fwlink/?LinkId=105946&clcid=0x409)(http://go.microsoft.com/fwlink/?LinkId=105946&clcid=0x409)SharePoint Products and Technologies customization policy
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.