创建或重建索引时强制收集统计信息

SQL> col KSPPINM format a30
SQL> col ksppstvl format a20
SQL> col ksppdesc format a60
SQL> set line 200
SQL> SELECT   ksppinm, ksppstvl, ksppdesc  
  2  FROM   x$ksppi x, x$ksppcv y  
  3  WHERE   x.indx = y.indx AND  ksppinm = '_optimizer_compute_index_stats'; 

KSPPINM                        KSPPSTVL             KSPPDESC
------------------------------ -------------------- ------------------------------------------------------------
_optimizer_compute_index_stats TRUE                 force index stats collection on index creation/rebuild

SQL>