No, you just need to continue to be a PR (2 yrs out of 5).
My file was put on hold for 6 months until I returned to Canada.
They don't say it on the table but they don't like you being outside. This is based on my personal experience.
I also know somebody who took oath outside Canada (EU...
1. triton.ca (about $50 in 10 minutes, name and date of birth check in national database and provincial database, does not contain municipal/local data)
2. No
3. What do you mean?