Oracle Message ORA-16135 - Invalid LOG_ARCHIVE_CONFIG modification while in protected mode

ERRORInvalid LOG_ARCHIVE_CONFIG modification while in protected mode
CAUSEThe LOG_ARCHIVE_CONFIG parameter can not be modified while any RAC instance is open in either maximum protection or maximum availability mode. Also, the parameter can not be modified in such way that would cause all destinations to fail while in maximum protection mode.
ACTIONMake the modification before the database is opened by any instance.