19c RAC在线替换OCR ASM磁盘

19c RAC在线替换OCR ASM磁盘

1.目标

ASM磁盘组EAP_OCR 要替换一块磁盘
NEW: /dev/EAP_OCR_02_03
OLD: /dev/EAP_OCR_02_01 --> name: EAP_OCR_0001

使用新的磁盘/dev/EAP_OCR_02_03 替换 ASM磁盘/dev/EAP_OCR_02_01

2.实施计划
--替换磁盘
ALTER DISKGROUP EAP_OCR OFFLINE DISK EAP_OCR_0001;
ALTER DISKGROUP EAP_OCR REPLACE DISK EAP_OCR_0001 WITH '/dev/EAP_OCR_02_03' POWER 3;
--OR
alter diskgroup EAP_OCR add disk '/dev/EAP_OCR_02_03' rebalance power 3;
alter diskgroup EAP_OCR drop disk 'EAP_OCR_0001' rebalance power 3;

3.监控
select * from v$asm_operation;
4.验证
select * from v$asm_disk;

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具体实施步骤如下。

su - grid

$sqlplus / as sysasm
SQL> ALTER DISKGROUP EAP_OCR REPLACE DISK EAP_OCR_0001 WITH '/dev/EAP_OCR_02_03' POWER 3;
ALTER DISKGROUP EAP_OCR REPLACE DISK EAP_OCR_0001 WITH '/dev/EAP_OCR_02_03' POWER 3
*
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15145: ASM disk 'EAP_OCR_0001' is online and cannot be replaced.

Elapsed: 00:00:00.02

----根据MOS ID 1571975.1 , offline disk前需要保证磁盘组COMPATIBILITY，DATABASE_COMPATIBILITY 满足要求。否则会报错。
----ALTER DISKGROUP EAP_OCR OFFLINE DISK EAP_OCR_0001;
----ALTER DISKGROUP EAP_OCR REPLACE DISK EAP_OCR_0001 WITH '/dev/EAP_OCR_02_03' POWER 3;

SQL>
SQL> ALTER DISKGROUP EAP_OCR OFFLINE DISK EAP_OCR_0001;

Diskgroup altered.

Elapsed: 00:00:00.04
SQL>
SQL> ALTER DISKGROUP EAP_OCR REPLACE DISK EAP_OCR_0001 WITH '/dev/EAP_OCR_02_03' POWER 3;

Diskgroup altered.

Elapsed: 00:00:01.19

SQL>exit