Migrate the data from one disk to another or Add new disk and remove old disk in oracle ASM
old disk: DATA_DISK New disk: DATA12_DISK Step-1: check what disks are allocate to the diskgroup . oraenv +ASM1 sqlplus / as sysasm set linesize 300 set pagesize 1000 set colsep | col name for a15 col PATH for a44 col HEADER_STATUS for a10 col MODE_STATUS for a10 col DN for 9999 col STATE for a10 col LABEL for a25 select group_number,name from v$asm_diskgroup order by name; select a.GROUP_NUMBER gn, b.name, a.DISK_NUMBER DN, a.PATH, a.MOUNT_STATUS M_Status, a.HEADER_STATUS H_Status, a.MODE_STATUS, a.STATE, a.OS_MB, a.TOTAL_MB, a.FREE_MB from v$asm_disk A, v$asm_diskgroup B Where A.group_number=B.group_number(+) and a.GROUP_NUMBER = ...