connections used with mod_dbd

[Joerg Beyer]

Hi,

I am experimenting with mod_dbd of apache-2.2.3. How could I tell (from
within the apache) how many db connections I am using:
a) right now
b) at most

Is nidle (of apr_reslist_t) the value that tell, how
many ressources (db connections) are idle now and (ntotal-nidle)
the value that tells how many db connections are used?

        thanks
        Joerg