RE: 8i - Seeing which columns disabled

From: yong huang <yong321_at_yahoo.com>
Date: Fri, 23 Mar 2001 17:21:17 -0800
Message-ID: <F001.002D6D76.20010323150522@fatcity.com>

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
yong321_at_yahoo.com

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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Received on Fri Mar 23 2001 - 19:21:17 CST