http://www.cnblogs.com/gaojian/p/3611641.html

http://blog.csdn.net/yong5241200/article/details/39451193

http://bbs.chinaunix.net/thread-1104660-1-1.html

http://blog.sina.com.cn/s/blog_4ab088470106b36f.html

http://www.2cto.com/database/201109/104615.html

http://jingyan.baidu.com/article/3065b3b6e202ccbecef8a411.html

oracle 归档模式和非归档模式