log.info("test- isc_start_transaction");
if (log!=null) log.info("test- isc_start_transaction");
    private isc_tr_handle startTransaction(isc_db_handle db) throws Exception {        isc_tr_handle tr = gds.get_new_isc_tr_handle();        log.info("test- isc_start_transaction");        gds.isc_start_transaction(tr, db, tpb);        return tr;    }