I'm writing this in response to a question on one of our mailing lists because of the current nature of the Oracle docset (something the doc team is working on) - it's kind of hard to figure out in a concise form.
Here are the things to do:
- Make sure to have 2 or more OVD instances deployed in production. OVD provides tools to keep the configurations in synch between systems
- If you have an external DR site - then synchronize the OVD configuration to this external site. Note this will assume that hostnames will be same in the DR site as primary. If not - then will require manual tweaking of the names.
- OVD keeps all of its configuration in files in the $ORACLE_INSTANCE directory. Back this directory up. If you needed to recover - this can be restored. Most likely would need to re-register the instance with OPMN and EM - which is covered in the OVD documentation.