Thanks you very much for you all to great quick replies. I have oracle client installed in my host and I already have set TNS record and through that I can connect to my remote db. But I just wanted to ssh remote db host and execute sqlplus from that point.because I can't get set oracle client and tns on every host that I going to run my script.same as DBI module. if there any way to use this module without installing,I mean as portable module so I can send module and script as one package so no dependencies. Thanks again.