Oracle不同版本的官方文档在线参考和打包下载地址汇总，罗列在这里，供你我参考。
1.9i Oracle官方文档
1）在线浏览
http://www.oracle.com/pls/db92/homepage
2）下载在手，参考无忧
Oracle9i Database Release 1 (9.0.1) Documentation
http://www.oracle.com/technology/documentation/Oracle9i_arch_901.html
Oracle9i Database Release 2 (9.2) Documentation
http://www.oracle.com/technology/documentation/oracle9i.html
2.10g Oracle官方文档
1）在线浏览
http://www.oracle.com/pls/db102/homepage
2）下载在手，参考无忧
Oracle Database 10g Release 1 (10.1) Documentation
http://www.oracle.com/technology/documentation/database10g.html
Oracle Database 10g Release 2 (10.2) Documentation
http://www.oracle.com/technology/documentation/database10gR2.html
3.11g 1Oracle官方文档
1）在线浏览
http://www.oracle.com/pls/db111/homepage
2）下载在手，参考无忧
Oracle Database 11g Release 1 (11.1) Documentation
http://www.oracle.com/technology/documentation/database11gR1.html
4.11gR2 Oracle官方文档
1）在线浏览
http://www.oracle.com/pls/db112/homepage
2）下载在手，参考无忧
Oracle Database 11gRelease 2 (11.2) Documentation
http://www.oracle.com/technology/documentation/database.html
