Check disk space thru database

Question

Friends,
Is there a way to run the command say "df -g" through the database and get the output so that to display
it finally in the database?

Answer 1

You can use
1>host df -h
2>host df -m
If you need total database size then use this querry.
select DataFiles.data_size+TempFiles.temp_size+RedoLogs.redo_size+ControlFile.controlfile_size "total_size in MB"
from
( select sum(bytes)/1024/1024 data_size from dba_data_files ) DataFiles,
( select nvl(sum(bytes),0)/1024/1024 temp_size from dba_temp_files ) TempFiles,
( select sum(bytes)/1024/1024 redo_size from sys.v_$log ) RedoLogs,
( select sum(BLOCK_SIZE*FILE_SIZE_BLKS)/1024/1024 controlfile_size from v$controlfile) ControlFile;
If you have asm diskgroup, then
select name,total_mb/1024 TOTAL_GB ,free_mb/1024 FREE_GB, ((free_mb/total_mb)*100) " %FREE ", 100-((free_mb/total_mb)*100) "%USED" from v$asm_diskgroup;
Regards,
Venki