#include <db_cxx.h> int DbEnv::get_home(const char **homep);
         The DbEnv::get_home() method returns the database environment home
         directory. This directory is normally identified when the
         DbEnv::open()
         method is called.
    
         The DbEnv::get_home() method may be called at any time during the
         life of the application.
    
         The DbEnv::get_home() 
            
            
                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.