从10点到12点数据库中对象块变化排名靠前的对象 select to_char(begin_interval_time,'YYYY_MM_DD HH24:MI') snap_time, dhsso.object_name, sum(db_block_changes_delta) from dba_hist_seg_stat dhss, dba_hist_seg_stat_obj dhsso, dba_hist_snapshot dhs where dhs.snap_id = dhss.snap_…