Not able to establish a oracle connection through jar when running in unix server

We have a job (jar)we can able to run in local(eclips) and other environment(unix) but same code we are not able to run in one of the unix server. when i cal a jar file from putty(java -jar filename.jar) session started but nothing happening(no error or success) it is just staying idle.i have put few sops and found that it is staying idle when it is caling DriverManager.getConnection(url,user,pwd)..it is not comming out of that. few observations: 1.No java version issue-checked 2.DB port enabled properly 3.No Exceptions /error throwing

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Link to original article：https://stackoverflow.com/questions/38069551/not-able-to-establish-a-oracle-connection-through-jar-when-running-in-unix-serve