ASM in an RAC Environment
We have discussed how it is useful to have the ASM instance available for the disks of the database, but have not yet looked into the details about how to manage the instance. In the Oracle RAC environment, there needs to be an ASM instance for every node in the cluster, but one ASM instance can support multiple instances on that node.
Managing ASM Disk Groups
The ASM disk groups serve as containers for consolidating databases and file systems to be able to use the storage more efficiently and even share between databases. The ASM Configuration Assistant (ASMCA) helps you create and manage disk groups. As shown in Figure 10-6, new disks can be added to the disk group here, and attributes of the disk group can be edited. ...
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