Short answer: Possible yes. But that is not a reason to worry.Abdih said:What is the possibility of getting rq after decision is made
Longer answer:
Is it possible to get RQ after decision is made?
Yes. It is possible to be given RQ any time, right up until taking the oath is complete.
Is that something to worry about? No. While possible, once the applicant has actually been scheduled for the oath it is not at all likely, and indeed would be extremely unlikely unless certain circumstances occur. (For example, there have been instances in the past where the applicant was abroad and was coming back to Canada just in time to attend the oath, and something triggered the POE officer's attention, resulting in a flag, the oath getting cancelled, RQ issued.)
Does an applicant know when a final decision has been made?
Being scheduled for the oath is really the only sure indication. There are some sporadic reports based on ATIP responses which some have interpreted to mean the final decision has been made. Even when the ATIP report has a "decision made" entry, I am skeptical about what that means. There is no doubt about what being scheduled for the oath means.
That said, again, there remains a possibility, that even after being scheduled for the oath, something might trigger CIC to make further inquiries, delaying the oath, or making document requests via CIT 0520 or even the full blown RQ (CIT 0171).
Even though the officer told me to expect oath letter 2 to 4 months?
The interviewer at the test event can only give the applicant his or her sense of how it will go. What the interviewer says is no guarantee of anything. It is a fair indication, but not much more than that. Many, many applicants have come away from the interview with the wrong impression . . . going both directions, some thinking it was RQ for sure and they were scheduled for the oath, others thinking it went very well and the oath would be soon and six months or more later they got RQ.
If your reference to "decision made" is based on something the interviewer said, that is for sure no guarantee that the decision is in fact made or that there will not be any further processing, which again could include document requests via CIT 0520 or even the full blown RQ (CIT 0171). Still, though, if the interviewer said all is in order and expect the oath, that is what I would expect. But with no guarantee.