I am a DBA on a 188.8.131.52 DB.
User A has granted create any session, select any table, and select on all of user B's tables.
In SQL Dev, he cannot expand the tables to see any of user B's tables.
What other permissions/authorities etc are needed. I know next to nothing about what is needed for SQL Dev.
I did some searches but I don't think my search fu is working quite right.
We check to see if the user has access to the dba_ views, if not, we default back to the all_ views. So if you query all_tables and A doesn't see anything for B, that's why you don't see it in SQL Developer.