## The problem
Issue oracle/oci-python-sdk#854 (closed, 7 comments): Description: We are running an OCI inventory script using the Oracle Python SDK to list all services across compartments and regions. During execution, we consistently receive a 503 ServiceUnavailable error when calling the OCE (Oracle Content and Experience) API. Error Details: Service: Oracle Content and Experience Cloud Operation: list_oce_instances Status Code: 503 Error Code: ServiceUnavailable Endpoint: mount the host path https at container path //cp.oce.eu-amsterdam-1.ocp.oraclecloud.com/20190912/oceInstances (also observed in me-dubai-1) Sample Error Message: ServiceUnavailable (503) operation_name: list_oce_instances mes

## What fixed it
The 503 from the OCE API while listing instances via the SDK was resolved by skipping OCE processing when excluded: at the top of `__load_paas_oce`, return [] early when the exclude flags contain oce_instance or oce. Also wrap the per-compartment `oci.pagination.list_call_get_all_results(oce_client.list_oce_instances, compartment_id=...)` call in try/except and return [] on failure, so one bad compartment does not kill the whole listing.