ora-7445

Merge-Statement crashes with ORA-7445 [kdu_close] caused by Real Time Statistics?

In a recent project we migrated an Oracle database previously running on 12.1.0.2 on an Oracle Database Appliance to an Exadata X8 with DB version 19.7. Shortly after the migration a merge-statement (upsert) failed with an ORA-07445: exception encountered:(…)