I did have some follow-up questions regarding DBMS_STATS.GATHER_FIXED_OBJECT_STATS(). 1. We had noticed that, since gathering the fixed object stats, the time needed to perform a level 0 incremental backup dropped by around 40%. Is this not a coincidence? 2. Is there any schedule or milestone upon which one should re-gather fixed object statistics? Don. On Mon, Feb 11, 2008 at 3:55 PM, Don Seiler <don@xxxxxxxxx> wrote: > Just wanted to follow-up here as well. I finally decided to file an > SR, and Oracle came back pretty quickly with Note 462879.1 [0], fixed > in 10.2.0.4 and 11g. It seems that, in this bug, queries against > v$rman_status table can take an extremely long time, and that table is > queried for every datafile switch during RMAN DUPLICATEs > > Workarounds are to either set sesiion-level optimization to RULE > based, or to gather fixed object statistics via > dbms_stats.gather_fixed_objects_stats();. > > I've done the latter, but haven't had an opportunity to perform > another restore as our development instances are needed until the next > release in two weeks. I'll report back with results when I do. > > [0] > https://metalink.oracle.com/metalink/plsql/f?p=130:14:6987901499320050620::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,462879.1,1,1,1,helvetica > > > -- > Don Seiler > http://seilerwerks.wordpress.com > ultimate: http://www.mufc.us > -- Don Seiler http://seilerwerks.wordpress.com ultimate: http://www.mufc.us -- //www.freelists.org/webpage/oracle-l