db2 connect to databasename
db2 rollforward db databasename stop
db2 rollforward db databasename to end of logs

GRANT SELECT,DELETE，[xxx]  ON TABLE  [表名]  TO USER [用户名] WITH GRANT OPTION;

EXPORT TO 'E:\cc_order.del' OF DEL
   select * from cc_order where order_date between '2019-04-01' and '2019-04-30' or order_date between '2019-07-01' and '2019-08-31' order by order_date;

-- 最大连接数
show variables like 'max_connections';

-- 当前连接数
show full processlist;