Talk to your Employer tell him you have to give him One or Two Months Salary in exhanged for NOC. Most Employer agreed in that kind of agreement. Otherwise no choice u hv to Pack all your things and wait for two years.
Option 2:
If you are Hired any of Qatar Government offices or QP, Rasgas. No need of NOC letter. They will write a letter to that Company asking an NOC for you...Unless you donot have any bad records from your Previous Employer.....