我有一个rails应用程序的heroku用户登录.我定期得到这个例外：
UserSessionsController#
(ActiveRecord::StatementInvalid)
“PGError: FATAL: terminating
connection due to administrator
command\nserver closed the connection
unexpectedly\n\tThis probably means
the server terminated
abnormally\n\tbef…
网址
POST http://secure.huckberry.com/user_sessions
这可能是什么原因？我会感谢任何帮助.