The log viewer allows you to view the events relating to the portal database. In order to proceed with such a view you need to access as portal administrator and click Log Viewer in the menu. The dialog box that will appear allows the view of all or some events, through the  choice made in the drop down list Type

If the all option is checked, all the events will be displayed. Such data will have a different colour according to the event which is displayed. In order to understand the kind of event indicated by the log click Colour Legend

The exceptions consist of irreversible errors which can occur during the loading of a page or of a module. These logs can be sent via email by clicking the Send exception button at the bottom.