Hello

Having two masters degree (that in your case is having MCA degree and now wanting to do MBA) is not considered as something bad rather it is considered as a good life choice because it will add to your skill set. That being said, the criteria for admission varies with each institute and country hence you must read the specifications of that particular university (tell me the name and I will look it up).

Make sure that you really want to study abroad, that you hve the budget for it(not only the tuition fees but also the living expenses), that you meet the eligibilty criteria (most colleges offer MBA program only to Business  graduates in countries like Korea etc).