ASM磁盘组如何删除DISK操作

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这篇文章主要介绍 ASM 磁盘组如何删除 DISK 操作，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

ASM 接触了很长时间，从磁盘组中删除磁盘的操作还是第一次。

没想到这么简单的操作，由于不熟悉还碰到了两个小问题。

[oracle@dbserver1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Tue Aug 9 10:08:06
2011

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 – 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options

SQL set pages 100 lines 120
SQL select group_number, name, state, type, total_mb, free_mb
2 from v$asm_diskgroup;

GROUP_NUMBER NAME STATE TYPE TOTAL_MB FREE_MB
———— —————————— ———– —— ———-
———-
1 DATA_AU1M CONNECTED EXTERN 1953124 7430
2 DATA_AU2M CONNECTED EXTERN 1953124 7384
3 DATA_AU4M CONNECTED EXTERN 1953124 7304
4 DATA CONNECTED EXTERN 3906248 3898966

SQL col path format a30
SQL col name format a30
SQL select disk_number, path, name, total_mb, free_mb
2 from v$asm_disk
3 where group_number = 4;

DISK_NUMBER PATH NAME TOTAL_MB FREE_MB
———– ————————- ————————- ———-
———-
1 /dev/asm-disk5 DATA_0001 1953124 1949486
0 /dev/asm-disk4 DATA_0000 1953124 1949480

SQL alter diskgroup data drop disk /dev/asm-disk5
alter diskgroup data drop disk /dev/asm-disk5
*
ERROR at line 1:
ORA-15000: command disallowed by current instance type

SQL exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 –
64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options

由于当前连接的是数据库，显然不能对 ASM 实例中的磁盘组进行操作，下面连接 ASM 实例：

[oracle@dbserver1 ~]$ su – grid
Password:
[grid@dbserver1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0
Production on Tue Aug 9 10:12:39 2011

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 – 64bit Production
With the Automatic Storage Management option

SQL set pages 100 lines 120
SQL select instance_number, instance_name from v$instance;

INSTANCE_NUMBER INSTANCE_NAME
————— —————-
1 +ASM

SQL alter diskgroup data drop
disk /dev/asm-disk5
alter diskgroup data drop disk /dev/asm-disk5
*
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15260: permission denied on ASM disk group

SQL alter diskgroup data drop disk data_0001;
alter diskgroup data drop disk data_0001
*
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15260: permission denied on ASM disk group

开始看到这个错误还确实疑惑了一下，怎么可能没有权限。有在操作系统上检查了磁盘的权限，也没有任何问题。

检查 Oracle 文档的错误信息后发现，由于习惯了适用 sysdba 来处理，忽略了当前是 11g 的 ASM，应该用 sysasm 来登录：

SQL conn / as sysasm
Connected.
SQL alter diskgroup data drop disk data_0001;

Diskgroup altered.