When using the Oracle JDBC Driver version 18.3.0.0 we get these errors, while detecting mismatched types which are actually correct. This prevents startup in strict mode since NXP-26395.
ERROR [JDBCMapper] SQL type mismatch for "HIERARCHY"."POS": expected INTEGER, database has NUMERIC / NUMBER(10) ERROR [JDBCMapper] SQL type mismatch for "HIERARCHY"."ISPROPERTY": expected BIT, database has NUMERIC / NUMBER(1) ERROR [JDBCMapper] SQL type mismatch for "HIERARCHY"."MAJORVERSION": expected BIGINT, database has NUMERIC / NUMBER(19)