https://blog.youkuaiyun.com/YAN5867795zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/YAN5867795/article/details/67637222https://blog.youkuaiyun.com/YAN5867795/article/details/67637222YAN5867795Tue, 28 Mar 2017 15:27:58 +0800sqlplus /nolog 3.连接数据库  SQL>conn sys/sys as sysdba 4. 开启数据库，查看错误信息 SQL> alter database open; alter database open ]]>