The Health Report might show some DWH invalid objects at some point when using Oracle.
Any patch level or release higher than CA PPM 188.8.131.52, 184.108.40.206 or 15.3.
If you are in any of the releases or patch levels above, please check with your DBA to try to recompile the DWH schema in your DBMS software (e.g.: SQL Developer).
If you are not in any of those releases or patch levels, you might be facing DE33575. Please upgrade to the latest patch for your release (on 15.1 or above) if recompiling the schema does not resolve the issue.