Your are having nearly 4+ years experience in to Oracle PL/SQL , why cant you continue your journey with the same, as salaries and future is also can be expected from that.
You didn't mentioned how much experience you had into SAP BO.
One of my friend is working on SAP BO he use to say calls are more for candidates having 3.5+ years experience on SAP BO.
So make perfect decision while changing from one technology to other.
If you learn from defeat..
You havent really lost..
Editor: DNS Forum.