You must manage the files in the checkpoint, journal, and dump locations for each database.

Each time you take a checkpoint, a set of files in the ckp and dmp directories are created. In addition, between checkpoints, for each journaled database, more files are created in the jnl (journal) location. Each set of journal files is associated with the checkpoint at the start of the journal interval.

So, for backup and restore purposes, a checkpoint consists of checkpoint file(s) and associated journal and dump files.

References to the ckp and associated files are stored in the configuration file for the database. These references must be present to be used by backup and restore operations. To see this information, issue the following command at the operating system prompt:

Most of the commands used to back up and restore data create or destroy the entire set of files and references associated with a checkpoint.