V$ASM_ACFSVOLUMES displays information about mounted Oracle ACFS volumes, correlated with V$ASM_FILESYSTEM.

Column Datatype Description
FS_NAME VARCHAR2(1024) File system mount point (foreign key to V$ASM_FILESYSTEM)
VOL_DEVICE VARCHAR2(256) Name of the Oracle ADVM device
VOL_LABEL VARCHAR2(64) Volume label (optional name) assigned through mkfs/acfsformat; NULL if no name exists
PRIMARY_VOL VARCHAR2(5) Indicates whether the volume is the primary volume for the file system (TRUE) or not (FALSE)
TOTAL_MB NUMBER Size of the volume device (in megabytes)
FREE_MB NUMBER Available space on the volume device (in megabytes)