Logging Analytics: OCI Unified Schema Logs catch-all source for custom logs

Oracle recommends that you create a user-defined source whose name matches with the value of the key type in your custom logs. However, if such a user-defined source is not created, then the catch-all source OCI Unified Schema Logs is used by Oracle Logging Analytics for your custom logs. This source uses the Oracle-defined parser OCI Unified Schema Log Format to parse the fields Time, Type, OCI Resource Name, Collection Time, Compartment ID, Logging Log Group OCID, Logging Log OCID, Tenant, Logging Record ID, CloudEvents Spec Version, and Message.

See Ingest Custom Logs from OCI Logging Service Using Service Connector.