I must thank my fellow DBA Franky Weber Faust for his publication in his blog.

The goal here is to show that via asmcmd it is also possible to remove a disk group. Let’s briefly see how to do this.

We list the disk groups:

So we tried to delete the diskgroup:

Note that the message refers to the diskgroup being mounted on another instance.

Let’s then remotely dismount the diskgroup DATA that is also mounted on node 2 of the cluster:

Now it is mounted only on node 1:

We finally managed to remove it:

When listing the diskgroups the DATA is no longer present:

OK, but it would appear the same if we had just unmounted the diskgroup.

So let’s see if there is still a resource for the DATA diskgroup in the cluster:

Note that for the diskgroup CONFIG there is a resource:

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