com.integrien.alive.controller.maintenance.DistributedTaskMaintenanceScheduler.getAllManualAndScheduledMaintenanceResourcesFromDB- Could not retrieve in maintenance resources data from DB.
Aria Operations 8.18.x
This issue will be resolved in future Aria Operations releases
Workaround:
1. Log in to Aria Operations as admin
2. From the left hand panel, Click on Operations > Configurations > Inventory Management.
3. On the right side of the panel filter with the affected host FQDN
4. Click on remove maintenance