26 Feb

Total_MB : Size of the disk group in megabytes.
Free_MB  : Free space in the disk group in megabytes, without regard to redundancy. From the V$ASM_DISKGROUP view.

[oracle@rac1 ~]$ asmcmd
ASMCMD> lsdg
State    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Name
MOUNTED  EXTERN  N         512   4096  1048576    546664   206178                0          206178              0  DATA/

[oracle@rac1 ~]$ sqlplus / as sysdba
SQL> SELECT name, free_mb, total_mb, free_mb/total_mb*100 “%” FROM v$asm_diskgroup;
NAME                              FREE_MB   TOTAL_MB          %
—————————— ———- ———- ———-
DATA                               206178     546664 37.7156718

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