Assume that the database consists of a single catalog store dbspace named
db.db with three main dbspaces: A, B and C.
- At time t0, alter all three main dbspaces
to read-only.
- Copy db.db to db.db0, either by shutting the database down and copying
db.db or using dbbackup to make a copy while the database is still
running.
- Freeze dbspaces A, B and C at
the hardware level. Store db.db0 in an
immutable form, perhaps by storing it in a file system file on the WORM device
and freezing it.
These steps archive the database as of time t0 in an immutable form.