Oracle 10g手工建立ASM磁盘组错误之--ORA-15201

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Oracle 10g手工建立ASM磁盘组错误之--ORA-15201


系统环境：

操作系统： AIX5300-08

Oracle 软件： Oracle
10gR2

错误现象：

通过AIX系统下的LV建立，ASM磁盘出现故障

查看ASM磁盘信息

[oracle@aix211 ~]$kfod

--------------------------------------------------------------------------------

ORACLE_SID ORACLE_HOME

================================================================================

+ASM /u01/app/oracle/product/10.2.0/db_1

[oracle@aix211 ~]$kfod status=TRUE
asm_diskstring='/dev/rlv*' disk=all

--------------------------------------------------------------------------------

Disk Size Header Path

================================================================================

1: 4096
Mb FOREIGN /dev/rlv_asm1 //这个裸设备信息和其他lv不一致

2: 4096 Mb CANDIDATE /dev/rlv_asm2

3: 4096 Mb CANDIDATE /dev/rlv_asm3

4: 4096 Mb CANDIDATE /dev/rlv_asm4

--------------------------------------------------------------------------------

ORACLE_SID ORACLE_HOME

================================================================================

+ASM /u01/app/oracle/product/10.2.0/db_1

6、建立ASM磁盘组


[oracle@aix211 ~]$export ORACLE_SID=+ASM

[oracle@aix211 ~]$sqlplus '/as sysdba'

SQL*Plus: Release 10.2.0.1.0 - Production on Tue May 27 16:36:03 2014

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

SQL> create diskgroup
dg1

2 normal redundancy

3 failgroup fg1 disk '/dev/rlv_asm1'

4 failgroup fg2 disk '/dev/rlv_asm2';

create diskgroup dg1

*

ERROR at line
1:

ORA-15018: diskgroup
cannot be created

ORA-15201: disk
/dev/rlv_asm1 contains a valid RDBMS file

报错信息：rlv_asm1被数据库实例占用

解决方法：

清除ASM磁盘头部信息：

[oracle@aix211 ~]$dd if=/dev/zero
of=/dev/rlv_asm1 bs=8192 count=2560

2560+0 records in

2560+0 records out

[oracle@aix211 ~]$kfod status=TRUE
asm_diskstring='/dev/rlv*' disk=all

--------------------------------------------------------------------------------

Disk Size Header Path

================================================================================

1: 4096 Mb CANDIDATE /dev/rlv_asm1
//此时，rlv_asm1和其他lv保持一致

2: 4096 Mb CANDIDATE /dev/rlv_asm2

3: 4096 Mb CANDIDATE /dev/rlv_asm3

4: 4096 Mb CANDIDATE /dev/rlv_asm4

--------------------------------------------------------------------------------

ORACLE_SID ORACLE_HOME

================================================================================

+ASM /u01/app/oracle/product/10.2.0/db_1

再建立磁盘组：


[oracle@aix211 ~]$sqlplus
'/as sysdba'

SQL*Plus: Release 10.2.0.1.0 - Production on Tue May 27 16:44:16 2014

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

SQL> create
diskgroup dg1

2 normal redundancy

3 failgroup fg1 disk '/dev/rlv_asm1'

4 failgroup fg2 disk '/dev/rlv_asm2';

Diskgroup created.

SQL> create diskgroup rcy1

2 normal redundancy

3 failgroup fg1 disk '/dev/rlv_asm3'

4 failgroup fg2 disk '/dev/rlv_asm4';

Diskgroup created.

查看磁盘组信息

SQL> select name,state from v$asm_diskgroup;

NAME STATE

------------------------------ -----------

DG1 MOUNTED

RCY1 MOUNTED

@至此，问题解决，应该是在LV的字符设备的头部出现了ASM无法处理的信息，清除头部信息后，问题解决。


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