Hana JBDC connection gives a valid connection for non existing db

We were following jdbc connection approach from below mentioned url.

SAP HANA Developer Guide for SAP HANA Studio - SAP Library

Below are driver and connection url

Driver : com.sap.db.jdbc.Driver

Connection  Url: jdbc:sap://hostName:portNumber/?databaseName={databasename}

Note: Also we are appending username and password with this connection url

Issue: We are able to establish JDBC connection with HANA Database using invalid DB name.

Please give us suggestion about this issue.