从oracle 11g版本开始,asm磁盘组会有两个新属性来兼容asm版本和数据库版本

COMPATIBLE.ASM - The minimum version of the ASM software that can access the disk group. In 11g, the default setting is 10.1.

COMPATIBLE.RDBMS - The minimum COMPATIBLE database initialization parameter setting for any database instance that uses the disk group. In 11g, the default setting is 10.1.

1.创建asm磁盘组时可以指定对应版本

CREATE DISKGROUP data DISK '/dev/raw/*'

ATTRIBUTE 'compatible.asm' = '11.1';

CREATE DISKGROUP data DISK '/dev/raw/*'

ATTRIBUTE 'compatible.rdbms' = '11.1', 'compatible.asm' = '11.1';

2.如果没加属性数据库和asm版本均默认为10.1

SQL>  SELECT group_number, name, compatibility, database_compatibility FROM v$asm_diskgroup;

GROUP_NUMBER NAME       COMPATIBILITY        DATABASE_COMPATIBILI

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

1 ASM_DG                         10.1.0.0.0           10.1.0.0.0

3.对已有的磁盘组进行属性修改

ALTER DISKGROUP asm_dg SET ATTRIBUTE 'compatible.asm' = '11.1';

ALTER DISKGROUP asm_dg SET ATTRIBUTE 'compatible.rdbms' = '11.1';

4.检查结果COLUMN name FORMAT A10

COLUMN compatibility FORMAT A20

COLUMN database_compatibility FORMAT A20

SELECT group_number, name, compatibility, database_compatibility FROM v$asm_diskgroup;

GROUP_NUMBER NAME COMPATIBILITY DATABASE_COMPATIBILI

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

1 ASM_DG 11.1.0.0.0 11.1.0.0.0

1 row selected.

SQL>

COLUMN name FORMAT A20

COLUMN value FORMAT A20

SELECT group_number, name, value FROM v$asm_attribute ORDER BY group_number, name;

GROUP_NUMBER NAME VALUE

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

1 au_size 1048576

1 compatible.asm 11.1.0.0.0

1 compatible.rdbms 11.1

1 disk_repair_time 3.6h

4 rows selected.

SQL>