Description of the illustration add_logfile_clauses.eps
ADD [ STANDBY ] LOGFILE { { [ INSTANCE 'instance_name' ] | [ THREAD 'integer' ] } [ GROUP integer ] redo_log_file_spec [, [ GROUP integer ] redo_log_file_spec ]... | MEMBER 'filename' [ REUSE ] [, 'filename' [ REUSE ] ]... TO logfile_descriptor [, logfile_descriptor ]... }