asm删除磁盘组的磁盘及磁盘组本身
export ORALCE_SID=+ASM
sqlplus /nolog
conn /as sysdba;
select group_number,name,total_mb,free_mb from v$asm_disk_stat;
SELECT NAME,TYPE,TOTAL_MB FROM V$ASM_DISKGROUP;
select group_number, name, TOTAL_MB, FREE_MB from V$asm_disk_stat;
ALTER DISKGROUP USERGROUP1 DROP DISK VOL1;
DROP DISKGROUP USERGROUP1;