If you only have one name, most likely you'll have problems. Not in Asia, in North America. Everywhere I go, I have this problem.
Cases in point:
1. I can't change my nick name to my real name on facebook. Pourquoi? Because I only have one name. I can only fill it in first or last, I can't have both.
2. ICBC issued my driver's license successfully at first. After they see that I only have one name, they chucked away my card. I had to call them to reissue and convinced them that my name is not a scam.
3. Immigration officers are always interested in the story. They will have the first 5 minutes interrogating moi on my name, if not using the whole 10 minutes discussing the same topic.
4. I have my name repeated twice on: banks, mastercards, libraries, ID-card, upass (they put 'G' as my first name. How cool is that?), discount cards, schools and all memberships. Yeah. So I always get 'Does the first name pronounced differently from the second?' or 'You have two identical names?'. Mostly i'll say that I have only one name and they ask 'How does that work?'.
5. People asks for my ID for everything name related. When they see my ID, they will ask, "How does that work?"
I'll tell you how it works: I have two birth certs. On my original birth cert, which is British, I have two names. My name and my father's sure name. But then I also have the second birth cert when I'm back to Indonesia, which consists only one name. My mom never changed her name to my father's name, so I follow my mom. And it is OK not to have last name in Indonesia. Since I then live in Indonesia, I have been using my Indonesian birth cert, until now. Little did I know that it will pose this much international concerns.