ASM discovered an insufficient number of disks for recovery
磁盘故障后，ASM 找不到足够的磁盘来恢复数据的冗余副本。如果不解决，可能会发生数据丢失。
SELECT name, state, total_mb, free_mb, offline_disks FROM v$asm_diskgroup;SELECT * FROM v$asm_operation WHERE group_number = &gn;SELECT disk_number, name, path, mode_status, repair_timer FROM v$asm_disk WHERE group_number = &gn;