There are two important tabs in the F4 dialogue. One is the SCRIPT the other is
the COLUMN tab.
The SCRIPT tab should be obeying the Toad Option=>DBA TYPES=>Include
BYTE/CHAR spec when creating DDL……
But the COLUMN tab should not. It should always indicate if it is BYTE or CHAR.
We now have a UTF8 database with CHAR semantics. So by default all VARCHAR2
columns become CHAR. But things happen either because of Oracle bugs or some
mistake or …… So it is necessary when looking at a column definition to
show whether it is BYTE or CHAR. So that if something is wrong you can F4 or go
to the SB and check exactly what it is.