利用dbms_stats.gather_database_stats包快速确定统计信息为空或陈旧的对象

set line 150 set serveroutput on declare   obj_empty dbms_stats.ObjectTab;   obj_stale dbms_stats.ObjectTab; begin   dbms_stats.gather_database_stats(options => 'LIST EMPTY',objlist => obj_empty);   for i in 1..obj_empty.count     loop       dbms_output.put_line('Empty statistics---> Owner:  '||obj_empty(i).ownname||'   Object name:  '||obj_empty(i).objName||'- -Object type:  '||obj_empty(i).objType);       end loop;     dbms_stats.gather_database_stats(options => 'LIST STALE',objlist => obj_stale);   for j in 1..obj_stale.count     loop       dbms_output.put_line('Empty statistics---> Owner:  '||obj_stale(j).ownname||'   Object name:  '||obj_stale(j).objName||'- -Object type:  '||obj_stale(j).objType);       end loop; end; / 输出结果如下： Empty statistics---> Owner:  JASON   Object name:  TAB_NAME- -Object type:  TABLE Empty statistics---> Owner:  JASON   Object name:  TAB_TEST- -Object type:  TABLE Empty statistics---> Owner:  JASON   Object name:  TEST- -Object type:  TABLE Empty statistics---> Owner:  LIUJL   Object name:  G_TEST- -Object type:  TABLE Empty statistics---> Owner:  LIUJL   Object name:  LJL- -Object type:  TABLE Empty statistics---> Owner:  LJL   Object name:  G_TEST- -Object type:  TABLE Empty statistics---> Owner:  LJL   Object name:  LJL- -Object type:  TABLE Empty statistics---> Owner:  SCOTT   Object name:  AA- -Object type:  TABLE Empty statistics---> Owner:  SCOTT   Object name:  MAGAZINE_ARTICLES- -Object type:  TABLE Empty statistics---> Owner:  SYS   Object name:  AQ$_KUPC$DATAPUMP_QUETAB_1_D- -Object type:  TABLE 最后我们可以用DBMS_STATS.GATHER包来收集相应的统计信息