JDBC connection issue with RTC afer upgrade from 2.x to 3.x

We are  facing jdbc connection issue after upgrading RTC from 2.x to 3.x

1. For 2.x oracle DB version was 10.0.2.4
2. We upgraded  to RTC 3.x and everything worked fine [ IBM recommended to upgrade Oracle DB to 11g as 10.0.2.4 was not supported ]
3. We upgrade to Oracle DB version: 11G (11.2.0.1.0)
4. we downloaded the ojdbc5.jar version 11.2.0.1.0 and copied to <install dir>/server/oracle
5. restarted  the jazz services

Now during the setup the jdbc connection is not working [ it is saying please make sure the jdbc file is under correct dir <install dir>/server/oracle ] . Does anyone as faced this kind of issue ?

We even tried with ojdbc.jar version 11.2.0.2 and 11.2.0.3 with same error.

Here is an interesting thing if we rename obdbc5.jar  to ojdbc14.jar the connection is successful  but later down the setup road we are facing some issue which we are working with IBM.

As anyone faced this kind of problem ?

Thanks
Mel