ORA-19603

Error: ORA-19603: cannot backup or copy active file with KEEP .. UNRECOVERABLE option

Causa: The user tried to copy or backup a file that was not closed cleanly, with the KEEP .. UNRECOVERABLE option. This is not allowed because when restored, the file will require redo application before it is usable, and redo will not be saved because of the KEEP .. UNRECOVERABLE option.

Acción: Take the tablespace offline cleanly, or close the database and retry the copy or backup.