It is possible to run read-only queries in separate connections through the driver to the data source. Opening a separate connection to run a query or stored procedure might provide better performance; although, having too many open connections might also degrade performance. The PRGRS_CACHE_CONN option allows you to set a limit for the maximum number of server connections available in the DataServer session. If the session attempts to exceed the maximum threshold, a session will need to wait for an existing connection to complete first before an additional connection can be made.