When looking at a RAC cluster, you might want to aggregate performance metrics about the databases it it. So far so good: we can write a super metric that does that, because the databases are direct children of the RAC cluster. But, what if we want to look at performance metrics about the VMs that the databases reside on? Now, we have a problem, because the VMs show up as grandparents of the databases, so there’s no direct relationship between the VMs and the RAC cluster.
Enter Blue Medora’s 3.4 release of the vC Ops Management Pack for Oracle EM.