NY + certificate of naturalization?

Anybody knows certificate of naturalization will be given on same day you take oath or it will come by mail?(If so,how long will it take?) in new york city area?

Any idea how long Oath Ceremony will go on in brooklyn court?

Thanks in advance.

Anybody knows certificate of naturalization will be given on same day you take oath or it will come by mail?(If so,how long will it take?) in new york city area?

Any idea how long Oath Ceremony will go on in brooklyn court?

Thanks in advance.

http://members.lycos.co.uk/usimmigration