Usage: clhsdb [[pid] | [path-to-java-executable [path-to-corefile]] | help | -help ] pid: attach to the process whose id is 'pid' path-to-java-executable: Debug a core file produced by this program path-to-corefile: Debug this corefile. The default is 'core' If no arguments are specified, you can select what to do from the GUI. hsdb> Input stream closed.