Exacheck is usually installed by default under:
Before being able to upgrade exacheck you need to obtain the newest release from Oracle Support. It can be found via Doc ID: 1070954.1
The downloaded fil must be placed either on the same location on all nodes in the cluster OR on a shared location accessible from all nodes in the cluster.
In this case the downloaded file will be placed on:
To do the actual upgrade of an old version of exacheck use the follow commands:
You should be seeing output similar to this:
.... to come...