Oracle Senior Software Engineer interview questions

It was a 5 rounds process. I cleared all 5 rounds. I got a mail from HR saying I successfully cleared the recruitment process. They asked me to fill few details and send back them. It's been more than 6 months I sent all the documents till now I haven't get my offer letter. They are keep on saying my offer is in process. Not sure when it will done

2 technical rounds and one senior director interview. Second round was coding test. you will be given test cases you need to write the functionality and make them pass.There were puzzle questions also in manger round.