Hi, Tracey,
>From my own test, I remember data in a column set unused can still be dumped to
a trace file. Depending on your knowledge of interpreting datafile dump, you
can get the result back one row at a time (or even write a script to automate
it; nobody outside Oracle can say that's easy).
Also note that Oracle documention says:
You can view all tables with columns marked as unused in the data dictionary
views USER_UNUSED_COL_TABS, DBA_UNUSED_COL_TABS, and ALL_UNUSED_COL_TABS
Yong Huang
[EMAIL PROTECTED]
you wrote:
> I found though that once marked unused U couldn't find a reference to the
> column name anywhere ie to confirm what columns have been dropped. I get
> the feeling that 'set unused' may be an irreversible process?
>
> Tracey
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