Cause
This error occurs if the database is opened for update and does not have write access to the database control file (_control.dat); for example, if the database files are read-only and if they reside on non-writable media such as a CD-ROM or they have been copied from a CD-ROM with their read-only attributes retained.
Action
If you require access to a read-only JADE database, the database must be opened in read-only mode by selecting a local read-only server type. Alternatively, if you intend to update the database, the read-only attribute on database files must be reset.