Thanks for the response. I'm not sure, how long does this tool takes for the 70GB data.
I used node to stream the xml files into inserts.. which was very slow.. Actually the xml contains 40 million records, out of which 10Million took around 2 hrs using nodejs. Hence, I thought will use COPY command, as suggested on the internet.
Definitely, will try the code and let you know.. But looks like it uses the same INSERT, not copy.. interesting if it runs quick on my machine.