Oracle磁盘组空间asm满了,管理Oracle ASM磁盘组系列5--管理磁盘组容量

1 说明

当Oracle ASM提供冗余的时候，例如当您创建一个具有NORMAL或HIGH冗余的磁盘组时，必须在每个磁盘组中拥有足够的容量来管理在一个或两个故障组失败后丢失的数据的重新创建。在一个或多个磁盘失败之后，为所有数据恢复冗余的过程需要磁盘组中剩下磁盘的空间。如果没有足够的空间，那么一些文件最终可能会降低冗余级别。

意味着这些文件将不会提供多个镜像用来冗余。https://www.cndba.cn/Expect-le/article/2627https://www.cndba.cn/Expect-le/article/2627

关于磁盘组空间划分，Oracle建议：https://www.cndba.cn/Expect-le/article/2627

Normal redundancy disk group - It is best to have enough free space in your disk group to tolerate the loss of all disks in one failure group. The amount of free space should be equivalent to the size of the largest failure group.

NORMAL冗余，剩余空间应该和一个最大的故障组大小相等。

High redundancy disk group - It is best to have enough free space to cope with the loss of all disks in two failure groups. The amount of free space should be equivalent to the sum of the sizes of the two largest failure groups.

HIGH冗余，剩余空间应该和两个最大故障组大