listener configuration

@&lt

 If I have multiple databases and one listener, is there any way to specify in the http request which database should be used ? For example, with a single database I would use an url like

http://<username>:<password>@<databaseserver>:<port>/orawsv/<database schema>/<database object>?wsdl

If the same listener is serving multiple databases, how do I specify which database to use in the url. I'm looking for something like

http://<username>:<password>@<databaseserver>:<port>/orawsv/<database schema>@&lt;database>/<database object>?wsdl