Toad for Oracle has an autocomplete feature.. you type SELECT * FROM USER. and then press Ctrl+. and a drop down appears where you can choose from the objects available to you.
This functionality suddenly stopped. Now, instead of a drop down, it goes to the first default match. I have no idea what I did to change the behavior.
How do I restore the drop down functionality?
This option is under Options -> Editor -> Code Assist. The only time I have ever seen it autofill instead of providing a list is when there is only one table that matches though... What version of Toad are you using?
I had the same problem, it was caused by a corrupt configuration file - try this answer and see if it works.
来源：https://stackoverflow.com/questions/4535428/toad-for-oracle-autocomplete-dropdown