Oracle Senior Software Engineer interview questions

I applied online and immediately got a phone call from recruiter very next day. The recruiter scheduled phone conversation with hiring manager who provided me a coding assignment to be worked upon offline. I got no feedback whatsoever on the assignment. Another phone interview was scheduled with additional team member. The interview was pretty vague just to find out my skills and some knowledge questions which I am sure I answered thoroughly and correctly. I followed up after a week and recruiter replied in negative. The worst part is I spent several hours on the coding assignment that at least deserve some feedback in my honest opinion and I found the behavior very unprofessional. Add to that there was no update unless I followed up. Thumbs down Oracle.

The telephonic round was mainly core java and some design on a virtual case. 1:1 interview consisted of 3 rounds. Tech Lead, Architect and Manager round before the HR. Tech Lead Round was based on Core Java combined with J2EE dealing only with concepts.. SCJP tutorial is enough for the same. Architect round was only on data structures and coding based on some given problem. Manager round was on completely on designing and further questions depending on what you design.