Heroku Rails无法为连接建立新进程：无法分配内存

Heroku Rails could not fork new process for connection: Cannot allocate memory

我有3个Rails应用程序，它们都使用相同的代码库。 2/3的应用程序运行良好，但是其中一个给了我这个错误：

could not fork new process for connection: Cannot allocate memory

在尝试查看Postgres日志时，它更加具体：

psql: bin//psql-9.2.1-64bit pv: bin//pv-1.1.4-64bit psql-9.2.1-64bit:
could not fork new process for connection: Cannot allocate memory
could not fork new process for connection: Cannot allocate memory
could not fork new process for connection: Cannot allocate memory
bin/brie: line 146: [: : integer expression expected pg_dump:
bin//pg_dump-9.2.1-64bit psql-9.2.1-64bit:could not fork new process
for connection: Cannot allocate memorycould not fork new process for
connection: Cannot allocate memorycould not fork new process for
connection: Cannot allocate memory

这是一个相对较小的应用程序，尤其是在数据方面。我已经尝试过重新推送所有内容，尝试过heroku-restart，并且Heroku的状态页显示它们很好。任何帮助将不胜感激。