SCCM scheduled imports failing to load and the "Test data source connections" under SCCM will fail with
java.lang.Exception: JDBCProbe not initialized
This happens when the SCCM Data Sources are missing a valid MID Server configured.
Either the MID Server is not configured or the Data Sources are configured with a MID Server that no longer exist.
You will see the following messages in the logs for the Scheduled imports:
WARNING *** WARNING *** Get for non-existent record: ecc_agent:<sys_id>, initializing
Make sure the SCCM Data Sources are all configured with a valid MID Server.