title: trying to execute the query for different db links using for loop concatinating dblink.but its throwing db link expected error
body: <p>I am trying to execute the query for different db links. I am using a for loop concatenated dblink. But it is throwing a db link expected error.</p>
  
  <pre><code>begin
  for i in (select db_link from db_table )
  loop
  select * FROM table@||i.db_link; 
  end loop;
  end;
  </code></pre>