ovnnm probe seems to have released in 2003 and I dont see any development done after that for this probe for over a decade .Even the Software requirements are pretty antique
Software: P OpenView NNM 6.x / 7.5, Nimsoft Robot version >= 2.0, (Windows) Nimsoft Infrastructure Manager and AlarmSubconsole
and the only note you could find in the whole documentation is the below
ovnnm | Acts as a gateway between CA UIM and HP OpenView NNM. CA UIM Alarms are represented by dynamically created objects which can be used in Business Process Views. |
I havent used this probe, but could you please advice what is that you are trying to achieve out of this integration ? May be there are other ways of achieving this in the current scenario