mcf.returnDbHandle(currentDbHandle);
mcf.returnDbHandle(currentDbHandle, cri);
    void findIscTrHandle(Xid xid, int flags) throws XAException {        currentTr = mcf.getCurrentIscTrHandle(xid, this, flags);        if (currentTr.getDbHandle() != currentDbHandle) {            mcf.returnDbHandle(currentDbHandle);            currentDbHandle = currentTr.getDbHandle();        }    }