SQL> create diskgroup TEST external redundancy disk 'TEST01';  //创建外部冗余磁盘

create diskgroup TEST external redundancy disk 'TEST01'

*

ERROR at line 1:

ORA-15018: diskgroup cannot be created

ORA-15031: disk specification 'TEST01' matches no disks

SQL> show parameter asm_diskstring;

NAME                                 TYPE        VALUE

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

asm_diskstring                       string      /dev/oracleasm/disks/*

SQL> create diskgroup TEST external redundancy disk '/dev/oracleasm/disks/TEST01';  //要写路径

Diskgroup created.