实验环境

搭建平台：VMware Workstation

OS：RHEL 6.10

Grid&DB：Oracle 11.2.0.4

SQL参考

select c.sql_text, c.sql_id, b.object_name, d.mb

  from v$sql_plan b,

       v$sql c,

       (select owner, segment_name, sum(bytes / 1024 / 1024) mb

          from dba_segments

         group by owner, segment_name) d

 where b.sql_id = c.sql_id

   and b.child_number = c.child_number

   and b.object_owner = 'TEST'

   and b.operation = 'INDEX'

   and b.options = 'FULL SCAN'    --INDEX FULL SCAN是一种性能较低的扫描方式

   and b.object_owner = d.owner

   and b.object_name = d.segment_name

 order by 4 desc;