How to handle user defined data types, etc. defined at the back-end(ORA) on the Business layer

SAP BO 4.0
Back-end: Oracle 11g.

Data source: Oracle 11g examples(HR & OE Data Schemas)

Issue description:
How to handle following datatypes

1. Custom Data types defined at the back-end.
2. MDSYS.SDO_GEOMETRY
3. SYS.XMLTYPE
4. "INTERVAL YEAR(2) MONTH" or "Interval Day to Sec"

These are the data type of the columns specified at the back-end.

When  the Business layer's integrity is checked for "Table Structure" and  "Business Objects expression" i get the errors(Image attached) stating  "Undetermined data type" for and "Incorrect Data type".

Has anyone experienced this and how were these data types handled?