Autoconfig is very reliant on java performance which is impacted by kernel entropy especially on virtual machines.
What is the value of /proc/sys/kernel/random/entropy_avail on the RHEL 7 system?
/home/appldev >cat /proc/sys/kernel/random/entropy_avail
I bet that is it. Please setup rngd and retest. That value should be 2000 to 4000.
Thanks for your help. I wasn't able to setup rngd, however, when I ran an "ls -R /" during autoconfig it ran in less than 60 seconds. Without it takes about 5 mins or so. Very interesting.