The error log Once you create or connect to a database within a system, begins outputting information and error messages to the error log. Typically, writes this information to a file called derby.log in the system directory. Error logdescription

Alternatively, you can have send messages to a stream, using the derby.stream.error.method or derby.stream.error.field property, or to a different file, using the derby.stream.error.file property. If you use any of these properties, the property setting will appear in the log.

By default, overwrites derby.log when you start the system. You can configure to append to the log with the derby.infolog.append property.

For information on setting all of these properties, see the .