hibernate insert batch with postgresql

@Override
    protected void doExecuteBatch(PreparedStatement ps) throws SQLException, HibernateException {
    	if ( batchSize == 0 ) {
    		log.debug( "no batched statements to execute" );
    	}
    	else {
    		if ( log.isDebugEnabled() ) {
    			log.debug( "Executing batch size: " + batchSize );
    		}

    		try {
//  			checkRowCounts( ps.executeBatch(), ps );
    			ps.executeBatch();
    		}
    		catch (RuntimeException re) {
    			log.error( "Exception executing batch: ", re );
    			throw re;
    		}
    		finally {
    			batchSize = 0;
    		}

    	}

    }