如下链接各个版本的驱动都有:
http://www.oracle.com/technetwork/database/features/jdbc/index-091264.html
Oracle Database 11g Release 2 JDBC Drivers
http://www.oracle.com/technetwork/apps-tech/jdbc-112010-090769.html
Oracle Database 12.1.0.2 JDBC Driver & UCP Downloads
http://www.oracle.com/technetwork/database/features/jdbc/default-2280470.html