To use the dblook tool with the Network Client driver, make sure the Network Server is running (see Starting the Network Server), and then include the necessary Derby and Network Client driver connection attributes as part of the database URL, as in the following example:
java org.apache.derby.tools.dblook -d 'jdbc:derby://localhost:1527/sample; user=user1;password=secret4me;'
For details on using the dblook tool, see the Java DB Tools and Utilities Guide.