#include <db_cxx.h> void DbEnv::get_errpfx(const char **errpfxp);
        The DbEnv::get_errpfx() method returns the error prefix that appears before error messages issued by Berkeley
        DB. This error prefix is set using the DbEnv::set_errpfx() method.
    
         The DbEnv::get_errpfx() method may be called at any time during the
         life of the application.