The -sdb switch allows you to specify the maximum number of cached ODBC connections. The default value 0 (zero) indicates no ODBC connection caching.
Inbound and outbound maps.
4.2
The syntax for this switch is:
-sdb number of cached connections
Specifying connection caches in Windows
Open the Run Inbound Map or Run Outbound Map window.
Click the Option 1 tab.
In the Number of ODBC Cache box, type the number of cache connections.