(1) A system object where changes made to data are recorded. The object created contains historical information about tasks, the database, messages, and notifications, which can be used to reconstruct a previous version of the data. The system-recognized identifier for the object type is *JRN.
(2) A chronological record of changes made in a set of data; the record can be used to reconstruct a previous version of the set.
(3) The destination pages from which a user can view all available historical information about tasks, the database, messages, and notifications.
(4) A feature of OS/400 that WebSphere MQ for iSeries uses to control updates to local objects. Each queue manager library contains a journal for that queue manager.