day going

产品or项目方法：
战略 --> 范围  --> 关系 --> 设计

设计过程：
本能设计 --> 行为设计 --> 反思设计

HttpClient容易忽视的细节——连接关闭
http://seanhe.iteye.com/blog/234759

Oracle tns配置

dev-***=
  (description=
   (address_list=(address=(protocol=tcp)(host=*.*.*.*)(port=1521)))
   (connect_data=(service_name=service_name_1)(server=dedicated))
  ) 
  
dev-**** =
  (description =
    (address = (protocol = tcp)(host = *.*.*.*)(port = 1521))
    (connect_data =
      (sid = sid1)
    )
  )

oracle数据闪回

update/delete ......
select current_scn from v$database;
select * from table as for scn scn_no


select * from table as timestamp to_timestamp(datetime);