Sometime the archiver process received an error while trying to archive a redo log. You can see error: ORA-00257. The most likely cause of this message is the destination device is out of space to store the redo log file or some reason archiver is disabled.
Sometimes You can get ” ORA-28002 The Password Will Expire in 7 Days Errors ” error when you log in database with application user. Second possibility is ORA-28001 when the password has expired.