在将其发布到这里之前，我已经在Google上进行了大量的搜索和手动阅读。
版本信息：Ubuntu10.x上的Postgres8.4
我有一台运行Postgres服务器的个人笔记本电脑，使用JDBC的Java脚本运行了1600多个分钟（我已经运行了数周），然后死于管理员重启服务器。这是我在pgsql日志中找到的内容：
Feb 29 07:46:55 krufe-laptop postgres[3578]: [2-1] 2012-02-29 07:46:55 EST LOG: incomplete startup packet
Feb 29 07:46:56 krufe-laptop postgres[1113]: [2-1] 2012-02-29 07:46:56 EST LOG: received fast shutdown request
Feb 29 07:46:56 krufe-laptop postgres[1113]: [3-1] 2012-02-29 07:46:56 EST LOG: aborting any active transactions
Feb 29 07:46:56 krufe-laptop postgres[24095]: [2-1] 2012-02-29 07:46:56 EST FATAL: terminating connection due to administrator command
Feb 29 07:46:56 krufe-laptop postgres[24095]: [2-2] 2012-02-29 07:46:56 EST STATEMENT: SELECT high FROM onemin_interval WHERE ticker = 'QQQ' AND interval_end <= 1329926940013 ORDER BY interval_start DESC LIMIT 46
Feb 29 07:46:56 krufe-laptop postgres[22214]: [2-1] 2012-02-29 07:46:56 EST FATAL: terminating connection due to administrator command
Feb 29 07:46:56 krufe-laptop postgres[1252]: [2-1] 2012-02-29 07:46:56 EST LOG: autovacuum launcher shutting down
Feb 29 07:46:56 krufe-laptop postgres[1250]: [1-1] 2012-02-29 07:46:56 EST LOG: shutting down
Feb 29 07:46:56 krufe-laptop postgres[3582]: [4-1] 2012-02-29 07:46:56 EST FATAL: the database system is shutting down
Feb 29 07:46:56 krufe-laptop postgres[3583]: [4-1] 2012-02-29 07:46:56 EST FATAL: the database system is shutting down
Feb 29 07:46:56 krufe-laptop postgres[3584]: [4-1] 2012-02-29 07:46:56 EST FATAL: the database system is shutting down
Feb 29 07:46:56 krufe-laptop postgres[3585]: [4-1] 2012-02-29 07:46:56 EST FATAL: the database system is shutting down
Feb 29 07:46:56 krufe-laptop postgres[1250]: [2-1] 2012-02-29 07:46:56 EST LOG: database system is shut down
Feb 29 07:47:10 krufe-laptop postgres[4318]: [1-1] 2012-02-29 07:47:10 EST LOG: database system was shut down at 2012-02-29 07:46:56 EST
Feb 29 07:47:10 krufe-laptop postgres[4319]: [1-1] 2012-02-29 07:47:10 EST LOG: incomplete startup packet
Feb 29 07:47:10 krufe-laptop postgres[4309]: [1-1] 2012-02-29 07:47:10 EST LOG: database system is ready to accept connections
Feb 29 07:47:10 krufe-laptop postgres[4322]: [1-1] 2012-02-29 07:47:10 EST LOG: autovacuum launcher started
我一个人住，没有人可以从外面溜进去做这件事。发生这种事的时候我还不在家。我查看了在此期间运行的命令的身份验证日志，没有看到普通的cron命令。为什么会这样？是什么原因造成的？可以修复/预防吗？