How to check MAXDATAFILES,MAXLOGHISTORY,MAXINSTANCES,MAXLOGFILES,MAXLOGMEMEBERS

-- MAXDATAFILES

Select 'MAXDATAFILES ' || records_total from v$controlfile_record_section where type = 'DATAFILE';

-- MAXLOGHISTORY

Select 'MAXLOGHISTORY ' || records_total from v$controlfile_record_section where type = 'LOG HISTORY';

-- MAXINSTANCES

Select 'MAXINSTANCES ' || records_total from v$controlfile_record_section where type = 'DATABASE';

-- MAXLOGFILES

Select ' MAXLOGFILES ' || records_total from v$controlfile_record_section where type = 'REDO LOG';

-- MAXLOGMEMBERS

Select 'MAXLOGMEMBERS ' || dimlm from x$kccdi;