"Probably less time than it takes to replace the differential in my car. :)" Would that be on race day or between races? smon_scn_time table is the table that Oracle uses to keep track of the relationship between scns and timestamps for flashback operations. It contains up to 5 uptime days of data (unless you have hacked it...but that is another story and NOT to be done on a PRODUCTION database!). It is relatively small (thousands of rows, not millions) so it should not take long to rebuild it...if it can be rebuilt. Since this table is constantly inserted/updated by smon, the window may be small, but the small size of the table should work for your benefit. I've never rebuilt the index, so I can't say for certain. As smon_scn_time is owned by SYS, it can't be exported. However, you could try a rebuild on a NON-PRODUCTION system first. ------- Original Message ------- On 8/24/2010 6:50 PM Jared Still wrote: On Tue, Aug 24, 2010 at 11:40 AM, Evan Pettrey <jepettrey@xxxxxxxxx> wrote:
The ''smon_scn_time_tim_idx' index is found in the "smon_scn_time" table.
Probably less time than it takes to replace the differential in my car. :) More seriously though, it really depends on the entire environment: * HW * how busy is it * storage system capacity * etc, etc, etc. Export the table (if possible) and import it to a database on a developmentor test server. --