{ ARCHIVELOG
| NOARCHIVELOG
| ADD [STANDBY] LOGFILE [THREAD integer]
  [GROUP integer] filespec [, [GROUP integer] filespec]... 
| DROP LOGFILE logfile_descriptor [, logfile_descriptor]...
| ADD [STANDBY] LOGFILE MEMBER 'filename' [REUSE] [, 'filename' [REUSE]]...
  TO logfile_descriptor [, logfile_descriptor]...
| DROP LOGFILE MEMBER 'filename' [, 'filename']...
| ADD SUPPLEMENTAL LOG DATA 
  ( { PRIMARY KEY | UNIQUE INDEX } [, { PRIMARY KEY | UNIQUE INDEX }]... ) COLUMNS
| DROP SUPPLEMENTAL LOG DATA
| RENAME FILE 'filename' [, 'filename']... TO 'filename'
| CLEAR [UNARCHIVED] LOGFILE
  logfile_descriptor [, logfile_descriptor]... [UNRECOVERABLE DATAFILE]
}

For information on the symbols and conventions of Backus-Naur Form (BNF) syntax, see Appendix A.