Long Running Scheduled Jobs named "Update Query Based Services"Issue Slow Query from "Update Query Based Services" job / big Query Hash for calculating query based service You might see real huge query hash that might take lots of time to run.ReleaseAnyCauseThere are query-based services (usually technical service, the the legacy one) defined over query_based_service_basic_view table. You might find such which don't have a filter at all. This is very big table, usually with several millions records. There is no use of such service. It sometimes created because query_based_service_basic_view is the default table for creating technical service. Resolution-Looked in Dynamic CI Group table 'cmdb_ci_query_based_service' to find the service that set to query on this legacy technical service table 'query_based_service_basic_view'. -Then adjust the query or this services should be deleted if no longer use.