jydbconsole is written in jython2.1 (version 2.2 should also work). Please follow installation instructions for jython at

Download jdbc driver for your database. Links to often used jdbc drivers are in links section.

Let the jython locate jdbc drivers.

In case you don't use sybase (or postgresql) driver you must use dumb driver dumbSybaseDriver.jar (or dumbPostgresqlDriver.jar) located in jydbconsole/libs directory. Sorry for that but these drivers have some problems with jython, and my code that solves those problems creates that dependency. Dump drivers are nearly empty classes to satisfy those dependencies.