managing database queries

[DSPCottage]

Dear All in a multi threaded system, I want to access the sql server 2000 data base in 15 separate threads. But now, when the connection of data base is lost , threads find it separately and they can not make other threads aware of this situation, also it is not possible to organize and manage the data base systematically. now I want to manage my data base with better mechanisems. I'd like to use design patterns for this purpose. But I didn't find any useful information in this regard yet. May you please let me know any information in this regard. Thanks in advance Mahdi