You can view the health and state of the DIMMs on the Memory page in the Oracle ILOM web interface.
This task uses DIMM_0 as an example.
-> show /System/Memory/DIMMs/DIMM_0 health health_details requested_state
/System/Memory/DIMMs/DIMM_0
Properties:
health = OK
health_details = -
requested_state = Enabled
->