自适应游标共享技术(Adaptive Cursor Sharing)

http://www.dataguru.cn/thread-532237-1-1.html
http://blog.itpub.net/15415488/viewspace-621535
http://blog.itpub.net/53956/viewspace-1384122/

http://blog.csdn.net/leshami/article/details/6923670

http://www.itpub.net/thread-1779225-1-1.html