Thank you very much for your quick response over weekend.
As of now, i am just on the trying to setup pega719 with postgre database.
while installation itself, it's failing. I didn't yet setup Application server.
Even, I have placed postgre jdbc jar(postgresql-9.4.1207.jre6.jar) file in <postgre_home>/lib directory as well. getting java returned : 1 error in the error log. Is this anything related to java ? i have installed java jdk-8u66.