求oracle8i的相关教材,那里有免费下的

http://www.pcbookcn.com/content.asp?Nclassid=22&classid=3 
http://superexam.myetang.com/ocp/index.html
http://soft.269.net/SoftWareList.asp?ClasstreePos=24
http://www.oradb.net/book.htm 
http://flying.swpi.edu.cn/books/dnwl/cxsj/oracle/index.html
http://easycome.myrice.com/bookstore/oracle.htm
http://www.kl.gz.cn/~hal/1-1-8.htm
http://www.ebooksou.com/search_leibie.asp?lei=4-2&word=Oracle 
http://www.eng.stu.edu.cn/ebook/type/database.asp?did=0203
ORACLE资料
http://www.powerba.com/develop/database/oracle/index_12.htm