Compared to the host centralized architecture, the distributed architecture based on X86 and cloud computing, has become the mainstream architecture solution, with its characteristics of high extendibility, low coast and high availability. Based on the distributed architecture dedicated to database layer, this article puts forward the solution suitable to the bank core business system, such as database shading, read/write splitting, data sharing, address optimization, high efficient operation and maintenance, etc., which has achieved success in practical application.