#include <db.h>

int
DB->get_heap_regionsize(DB *db, 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 returns a non-zero error value on failure and 0 on success.