Sorry...I worked in Dubai 3 months ago that's why Dubai is still in my mind..lol...Business tourist visa is also one month...renewable each month for a maximum of 3 months (may change periodically, am not 100% sure, but this is the latest experience I have)....and the approval of each renewal depends on the immigration department and your "sponsor" here. Dubai visit visa and Qatar is not the same, in Qatar you need to "exit" before expiring your visa and, as far as i know, it must be in your country of origin (if you don't have any work/sponsor yet) while in Dubai, you can have a multiple "exit" in any neighboring countries (but can deny the visa after 2, 3 or xxx tries )...Your salary, for sure is doubled in Qatar/Dubai compare your salary in KSA...