Hi Manohar,
I agree with Jan that ojdeploy requires a JDeveloper installation, both for ant or maven as build tool.
That's why we install JDeveloper on our build server.
And yes, I had numerous 'religious' discussions if this is the ideal situation or not and that the build server should remain clean as clean as possible. I prefer the pragmatic approach: if we need JDeveloper (or another tool, e.g. soapui) on the build server, so be it...
I think it's a waste of time and money to not allow that and to spend time to create an obscure script to 'emulate' a jdeveloper installation.
Good luck.
Ciao
Aino