You can add the connection string as per your requirement(the number of database connection required) in web.config
<connectionStrings>
<add name="constr1" connectionString="..."/>
<add name="constr2" connectionString="..."/>
<add name="constr3" connectionString="..."/>
<add name="constr4" connectionString="..."/>
...
</connectionStrings>
use proper connection string as per the database you need.