#include <db_cxx.h> int DbEnv::get_tmp_dir(const char **dirp);
         The DbEnv::get_tmp_dir() method returns the database environment
         temporary file directory.
    
         The DbEnv::get_tmp_dir() method may be called at any time during the
         life of the application.
    
         The DbEnv::get_tmp_dir() 
            
            
                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.