Oracle Senior Software Engineer interview questions

No Offer letter after clearing 6 hectic rounds 1. Written test 2. 3 technical rounds - F2F 3. 1 Telephonic round- Skype 4. 1 Managerial round one of the waste interview process i have ever seen ;6 rounds for 3yr exp guy and each round of min. 1 hour are you kidding me ?, what i noticed is questions asked are 90% same in all the rounds then what is use of 3 technical rounds just time waste. After clearing all the rounds ,i dint get offer from them Just for sake of 25k they rejected and selected other guy who accepted for less offer without asking me for salary negotiation

Approached by a recruiter from Oracle. 1) 2 Telephonic 2) Coding Rounds 3) Face to Face round 4) Manager round There could be around 4-5 rounds . Interviews are purely Technical and mostly on basics.