In Oracle Fabric Manager, create a unique user for OpenStack operations, and use this user for tasks related to OpenStack. For example, you might make an openstack user and use that for the Oracle Fabric Manager configuration in the /etc/neutron/plugins/ml2/ml2_conf_oracle_es2.ini file.
When OpenStack-related tasks in Oracle Fabric Manager occur through this user, you have a level of auditing in Oracle Fabric Manager.