#include <db_cxx.h> int Db::get_heap_regionsize(u_int32_t *npagesp);
Used when the underlying database is configured to use the Heap access method. This method returns the number of pages in a region. This value may be set using the Db::set_heap_regionsize() method.
         The Db::get_heap_regionsize() method may
         be called at any time during the life of the application.
    
         The Db::get_heap_regionsize() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.