Explain Plan&& dbms_xplan

各个数据库的explain plan：

http://www.dbsolo.com/explainplan.html

 

 

oracle DBMS Xplan FAQ：

http://www.orafaq.com/wiki/DBMS_XPLAN

 

 

dbms_xplan reference:

http://www.psoug.org/reference/dbms_xplan.html

 

 

Explain_Plan:

http://www.orafaq.com/wiki/Explain_Plan