看到SYSAUX表空间涨的很快，
主要是以下表
- wri$_optstat_tab_history
- wri$_optstat_ind_history
- wri$_optstat_histhead_history
- wri$_optstat_histgrm_history
经查是bug
Document 10279045.8 Slow Statistics purging (SYSAUX grows)
Document 8553944.8 SYSAUX tablespace grows
Document 14373728.8 Bug 14373728 – Old statistics not purged from SYSAUX tablespace
Document 11869207.8 Improvements to archived statistics purging / SYSA[……]