1,ASM instances do not have a data dictionary, so the only way to connect to one is by using OS authentication, that is, SYSDBA or SYSOPER.
为什么没有数据字典就只能用sysdba和sysoper登陆?
2,Every ASM disk has an ASM disk name, which is a name common to all nodes in a cluster. The ASM disk name abstraction is required because different hosts can use different names to refer to the same disk.
这句话看不懂,这里的nodes in a cluster值得是什么?
不是说asm disk name是一样的吗?第二句怎么又说不同主机可以用不同名字指向同一块disk?谢谢了~
Every ASM disk has an ASM disk name, which is a name common to all nodes in a cluster
按照这句话的意思,disk1对于a和b来说名字都为disk1, disk2对于a和b来说名字都为disk2.
可是下面这句话The ASM disk name abstraction is required because different hosts can use different names to refer to the same disk. 又说主机a和主机b可以通过不同的名字来引用disk1和disk2??这岂不是矛盾了吗?