http://itping.iteye.com/blog/1554402

http://www.cnblogs.com/ungshow/archive/2008/10/16/1312846.html

乱码解决：

http://blog.chinaunix.net/uid-20524648-id-3977676.html

http://blog.itpub.net/8102208/viewspace-468200

Oracle安装：

http://blog.csdn.net/redarmy_chen/article/details/7351410

http://blog.csdn.net/brigthen/article/details/21183079

wm_concat：

http://database.51cto.com/art/201010/231126.htm