本源代码实现同时对数据库Oracle和MS SQL的连接，通过对配置文件的修改来实现，本代码执行生产为dll文件。-source code to the database simultaneously Oracle and MS SQL connectivity, the configuration file through changes to achieve the production code execution dll file.

PLSQL developer 的tnsnames配置文件 连接不上数据库需要修改此文件-PLSQL developer of tnsnames profile connections do not need to modify this file on the