title: query from different oracle connections in sqldeveloper
body: <p>I have 2 connections with different tables in sqldeveloper.</p>
  
  <p>let's say:</p>
  
  <p>ConnectionA with tables: A,B,C
  ConnectionB with tables: D,E,F</p>
  
  <p>Now I want to have a query that looks like this:</p>
  
  <p>select aa.name,dd.id
  from A aa,D dd;</p>
  
  <p>How can i do this?</p>