After upgrading to Toad 11.5, in recent troubleshooting we have noticed that sessions through DBLinks are not appearing in Session Browser. We have numerous scripts that call other databases through DBlinks and we used to be able to see the session information of these queries through Session Browser on the end dblink. They are now not there and it is making troubleshooting very difficult of poor performing queries to see the sessions information, explain plan and long ops.
Uncheck the “Exclude NULL and SYSTEM OS users” option in the filter.