Duplicate Visitor Records in Visitor Export Results



The results of a Visitor Export show duplicate visitors.


Occasionally, duplicate visitors can be included in the Visitor Export Results list. This can happen because the customer’s web server generates and maintains the ExternalVisitorID and passes it using the WT.dcsvid parameter, whereas SDC or Webtrends On Demand generates and maintains the unique visitor ID using cookies. If the visitor deletes cookies or visits the customer’s site from more than one computer, the visitor could be identified as a unique visitor by SDC or Webtrends On Demand even though the customer?s web server recognized the visitor. When this occurs, the Visitor table contains duplicate ExternalVisitorIDs which Explore uses to join data in the vtrVisitor table. This table is the source for the Visitor Export Results list.