ORA-15018: diskgroup cannot be created，数据恢复技术服务

ORA-15018: diskgroup cannot be created，数据恢复技术服务-->解决方法

SQL> create diskgroup DG1 normal redundancy disk 'ORCL:VOL1','ORCL:VOL2';
create diskgroup DG1 normal redundancy disk 'ORCL:VOL1','ORCL:VOL2'
*
ERROR at line 1:
ORA-15018: diskgroup cannot be created                      -->解决方法
ORA-15031: disk specification 'ORCL:VOL2' matches no disks
ORA-15031: disk specification 'ORCL:VOL1' matches no disks   -->解决方法