A nasty password-related gotcha in sqlplus
If you're working with Oracle database (and not using just tools with GUI), you surely know sqlplus i.e. a console-based SQL client for Oracle. A very spartan tool (forget about history of commands, auto completions, advanced editor etc.) but very effective and often used if all you have is access through SSH. But it has some quirks - one very nasty password-related hit me recently.
