PostgreSQL data migration

Migrate.java

public class Migrate {

	private static String oldUrl;
	private static Properties oldProps = new Properties();
	private static String newUrl;
	private static Properties newProps = new Properties();

	public static void main(String[] args) {
		oldUrl = "jdbc:postgresql://hostname/dbname";
		oldProps.setProperty("user", "xxxx");
		newUrl = "jdbc:postgresql://hostname/dbname";
		newProps.setProperty("user", "xxxx");

		migrate("table1");
		migrate("table2");
		migrate("table3");
		migrate("table4");
		migrate("table5");
	}
	
	private static void migrate(String tableName) {
		try (Connection oldConn = DriverManager.getConnection(oldUrl, oldProps);
				Connection newConn = DriverManager.getConnection(newUrl,
						newProps)) {
			QueryRunner oldRunner = new QueryRunner(true);
			ResultSetHandler<List<Object[]>> rsh = new ArrayListHandler();
			List<Object[]> result = oldRunner.query(oldConn, "select * from "
					+ tableName, rsh);
			String insertSQL = "insert into " + tableName + " values(";
			for (int i = 0; i < result.get(0).length - 1; i++) {
				insertSQL += "?,";
			}
			insertSQL += "?)";
			QueryRunner newRunner = new QueryRunner();
			newRunner
					.batch(newConn, insertSQL, result.toArray(new Object[0][]));
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}
}