If your installation was not completely removed, you may follow these instructions to remove all of Network Node Manager. To fully uninstall the product, you must first use the command to automatically remove the product.
The /opt/OV/bin/remove.nnm will remove the installed portions of your product, but leave the databases. If you would like to completely remove the product, and have no other OpenView products installed, you can remove all OpenView directories by running:
rm -rf /opt/OV /etc/opt/OV /var/opt/OV