需要用到dbms_stats這個包的GATHER_TABLE_STATS過程,其中擁有者和表名必須填。
PROCEDURE GATHER_TABLE_STATS
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
OWNNAME VARCHAR2
IN
TABNAME VARCHAR2
IN
PARTNAME VARCHAR2 IN
DEFAULT
ESTIMATE_PERCENT NUMBER IN DEFAULT
BLOCK_SAMPLE BOOLEAN IN
DEFAULT
METHOD_OPT