Never copy the FDB file! You WILL corrupt both FDB and copy file! The best approach is do a gbak to backup and then restore the FDB.
You MUST read the firebird FAQ here: http://www.firebirdfaq.org/ Also: http://www.firebirdsql.org/manual/qsg10-howtocorrupt.html and http://www.firebirdsql.org/manual/qsg10-backup.html [Non-text portions of this message have been removed]
