Function
If you set this property to rollingFile (the only supported
value), by default
creates up to 10 rolling files named derby-0.log, derby-1.log, and
so on, up to derby-9.log, each with a maximum length of 1,024,000
bytes.
You can override any of these defaults by setting one or more of the
following properties:
If you set this property, the
derby.stream.error.field,
derby.stream.error.file, and
derby.stream.error.method
properties are ignored.
This property works in accordance with the setting of the
derby.infolog.append property.
If derby.infolog.append is not set or is set to false, any existing log
files will be rolled over and a new log file will be created when the
engine is started. If
derby.infolog.append is set to true, the latest existing log file, if
any, will be appended to.