Finally, I created an artwork - with IOgraph

IOGraphica is a small application which creates a graph map of your mouse movements. You just have to start the app and let it run, and its ouput is  PNG file. Here is mine after one day of running.

See all developer logins in Siebel

I wanted to see all users who had localdbs on our server.

 

select * from user_role_privs

 

..will list all the users roles. The user with SSE_ROLE permissions are registered developers, and they could have local dbs.