Question

我使用Django / Pycharm连接到Windows上的Postgres数据库。我已经在其他计算机上做了很多次这样的事情，并且非常有信心我正确配置了连接。

每隔一段时间数据库连接失败并返回错误。它既发生在我的Django应用程序中，也发生在使用pycharm UI。这很奇怪，因为它至少每9/10次我与数据库进行交互，但我注意到可能它通常发生在我尝试快速连发多次与db进行交互时，但情况并非总是如此。

在pycharm数据库连接UI中，当我测试连接时，通常有效，但有时会失败。我使用默认的'postgres'用户，我怀疑这可能是问题所在。

以下是我的Django应用程序中的db配置，虽然我非常肯定这个问题与我的代码无关：

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'contract_directory_site',
        'USER': 'postgres',
        'PASSWORD': 'my_password',
    }
}

除了密码之外的所有内容都与我的代码和PyCharm数据库连接属性中的内容完全相同。

我从Django得到的错误：

server closed the connection unexpectedly
    This probably means the server terminated abnormally
    before or while processing the request.

在发出10次或更少的请求后，几乎可以保证发生这种情况，并且在第一次尝试时就已经发生了。这是整个堆栈跟踪：

  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
    response = get_response(request)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:/Users/fbgnew/PycharmProjects/fbg/procurematch_era/directory_site\listings\views.py", line 44, in listing_search
    return render(request, 'listings/search_results.html', context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\shortcuts.py", line 30, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\loader.py", line 68, in render_to_string
    return template.render(context, request)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\backends\django.py", line 66, in render
    return self.template.render(context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\base.py", line 207, in render
    return self._render(context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\base.py", line 199, in _render
    return self.nodelist.render(context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\base.py", line 990, in render
    bit = node.render_annotated(context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\base.py", line 957, in render_annotated
    return self.render(context)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\template\defaulttags.py", line 173, in render
    len_values = len(values)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\models\query.py", line 232, in __len__
    self._fetch_all()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\models\query.py", line 1118, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\models\query.py", line 53, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\models\sql\compiler.py", line 874, in execute_sql
    cursor = self.connection.cursor()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\base\base.py", line 254, in cursor
    return self._cursor()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\base\base.py", line 229, in _cursor
    self.ensure_connection()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\base\base.py", line 213, in ensure_connection
    self.connect()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\utils\six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\base\base.py", line 213, in ensure_connection
    self.connect()
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\base\base.py", line 189, in connect
    self.connection = self.get_new_connection(conn_params)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\django\db\backends\postgresql\base.py", line 176, in get_new_connection
    connection = Database.connect(**conn_params)
  File "C:\Users\fbgnew\Anaconda3\lib\site-packages\psycopg2\__init__.py", line 130, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: server closed the connection unexpectedly
    This probably means the server terminated abnormally
    before or while processing the request.

[24/Oct/2017 16:08:14] "POST /home/ HTTP/1.1" 500 180346

也许值得注意的是我在安装postgres时遇到了一些麻烦。出于某种原因，我无法使命令行工具正常工作，我假设我的PATH搞砸了，但我的时间紧迫，只要数据库正常工作，我将在以后找出CLI。

连接到postgres数据库有点失败

0 个答案: