Oracle recommends that you use the daemon process to schedule recurring health checks at regular intervals.
Configure the daemon to:
Schedule recurring health checks at regular interval
Send email notifications when the health check runs complete, clearly showing any differences since the last run
Purge collection results after a pre-determined period
Check and send email notification about stale passwords
Store multiple profiles for automated health check runs
Restart automatically if the server or node where it is running restarts
Note:
While running, the daemon answers all the prompts required by subsequent on-demand health checks.
To run on-demand health checks, do not use the daemon process started by others. Run on-demand health checks within the same directory where you have started the daemon.
If you change the system configuration such as adding or removing servers or nodes, then restart the daemon.