If you're using an ODBC data source, you can use the Connection Pooling option in Internet Information Server (IIS) to achieve high performance handling of client load. Connection Pooling is a resource manager for connections, maintaining the open state on frequently used connections.
To enable Connection Pooling, refer to the Internet Information Server documentation.
Please note that enabling Connection Pooling may subject the Web server to other restrictions, as noted in the Microsoft Internet Information Server documentation.