For several weeks now, the SAP Upgrade Manager (SUM) has been instantiating ATC check classes. This occurs during transport release of SPDD but also during upgrade in the shadow instance. I attached an example: dump.txt
According to SAP note 2474180 any access to a non SAP table leads to a dump. Even if an ATC check is not active, releasing a transport or performing an upgrade will lead to a dump, because in a constructor a SELECT on an Y-table is triggered.
This problem is severe because it prevents system upgrades.