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有人通过SSH访问了我的Ubuntu,他们进入rm -Rf /这删除了它,现在我无法通过SSH或SFTP访问它。在SFTP上,我得到以下错误:
Error: Connection timed out
Error: Could not connect to server
然后在SSH上,我尝试连接到端口22上的VPS IP,它很长时间都没有想出任何东西(它应该需要一个用户名),然后出现一个更新,上面写着:网络错误:连接超时。
是否有可能解决这一问题,如果有,如何解决?
我正在研究用于数据库模式版本控制的Liquibase命令。目前,我正在使用diffChangeLog命令。下面是我正在研究的示例格式。
liquibase
--changeLogFile=dbchangelog.xml
--outputFile=mydiff.txt
--driver=oracle.jdbc.OracleDriver
--classpath=ojdbc14.jar
--url="jdbc:oracle:thin:@<IP OR HOSTNAME>:<PORT>:<SERVICE NAME OR SID>"
--username
因为我的服务器崩溃了,数据库被破坏了,所以我从存档中恢复了。密码服务器不再启动。日志如下所示:
Feb 14 2012 21:41:20 156746us Mac OS X Password Service version 376.1 (pid = 2438) was started at: Tue Feb 14 21:41:20 2012.
Feb 14 2012 21:41:20 156801us RunAppThread Created
Feb 14 2012 21:41:20 156852us RunAppThread Started
Feb 14 2012 21:4
我在Glassfishserver服务器上使用psql 8.1.18。我有一个类似这样的查询:
select ip,round((select sum(t1.size) from table t1))
from table
where date > '2011.07.29'
and date < '2011.07.30'
and ip = '255.255.255.255'
group by ip;
当我运行这个查询时,我得到了这个错误:
ERROR: could not read block 4707 of relati