Re: Hidden Columns

Hidden columns are used if you use certain features of Oracle, e.g. materialized views, replication, objects

At 06:44 AM 5/28/2003 -0800, you wrote:

>Hi all,
>
>I know this is RTFM but I can't find the right part in the FM to R. So
>any help would be appreciated:
>
>In the context of:
>
> DBMS_STATS.GATHER_DATABASE_STATS(method_opt=>'FOR ALL HIDDEN COLUMNS');
>
>what is a "hidden column". I tried gathering stats FOR ALL HIDDEN COLUMNS
>and it didn't seem to gather any stats for any columns. What is it meant
>to do?

Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com

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