oracle夜未眠之三非常优秀的参考文档

ORACLE PL/SQL编程之把游标说透

http://kb.cnblogs.com/page/100461/

ORACLE PL/SQL编程之把过程与函数说透

http://kb.cnblogs.com/page/100144/

ORACLE PL/SQL编程之把触发器说透

http://kb.cnblogs.com/page/99328/