Hi Yasin, I think that you answered the question yourself :) You are using global indexes and partitioning. I will assume as normal to get more LIO then with normal table. Also the majority of LIO's are from the indexes you are using, so you should check the stats for indexes. Just do the analyze of the tables and indexes after the insert and check the difference in statistics. Do not have the time to evaluate the difference between global indexes on the partitioned table and normal table indexes. Regards, Zoran __________________________________ Do you Yahoo!? Yahoo! Personals - Better first dates. More second dates. http://personals.yahoo.com -- //www.freelists.org/webpage/oracle-l