You could try using
`select * from table(xmlsequence( myfunc() ))` . In this case you get xml in columns.

Or try example to extract field `COL` from your refcursor

`select extractvalue(COLUMN_VALUE ,'/ROW/COL') 
from table( xmlsequence( 
  cursor( select 1 COL from dual union all select 2 COL from dual)
))` 

. Here `cursor(..)` is equivalent of refcursor function.
 
PS. Note about xml overhead.

PPS. Sorry if something wrong because this is my 1st post at this site.