Note that starting from 8.0, the controlfile can dynamically grow, thus
instead of overwriting reusable sections before their keep time expires,
controlfile is expanded instead. Only reusable records can be overwritten
after control_file_record_keep_time days. These include log history, archive
history, rman records etc.. which are not crucial for running your database
anyway. It might affect some custom backup scripts or rman nocatalog
operations, though.

Select from v$controlfile_record_section to get a brief overview about your
current controlfile state (check records_total, records_used to check % of
record usage and first_index to see where writing occurring in full
circularbuffer). If you want to get more information, you can dump
controlfile information to trace using: alter session set events 'immediate
trace name controlf level 3'; or use level 10 if you wan't very detailed
information.

Tanel.

----- Original Message ----- 
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Saturday, September 20, 2003 12:39 AM


>
>
>
http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96536/ch126.htm#1015367
>
> I backup once a week. Default as per the manual is 7 days.
> I might skip taking backup due to various reasons i a week. How will
> i ever know what % of my control file records are avbl.for
> rewriting and that i will not run into any error?
>
> Thanks
>
> Quriyat
>
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