我正在尝试将两个数据库连接到Django项目，以便我可以在开发时使用一个，而在生产时使用另一个。
我的设置文件：
```python
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}
db_from_env = dj_database_url.config(conn_max_age=500)
DATABASES["default"].update(db_from_env)
export DATABASE_URL=path_to_database

<details>
<summary>英文:</summary>
I am trying to connect 2 databases to django project so I can use one for develop and another on production
My setting file 

When i try to run server I got this error: "django.db.utils.NotSupportedError: PostgreSQL 12 or later is required (found 11.18)."
But when i write psql in terminal I got: psql (14.7 (Homebrew), server 15.2)
And PostgrSQL@11 is not installed on my mac
</details>
# 答案1
**得分**: 1
即使`psql`客户端连接到更新版本的`PostgreSQL`服务器，你的机器上可能还有其他运行中的`PostgreSQL`服务器。
你可以通过运行 `ps auxwww | grep postgres` 来找到它们。
每个运行中的服务器都在不同的端口上监听。因为`psql`客户端正在连接到`PostgreSQL@14.7`，这个服务器可能在端口5432上运行（这是`psql`默认连接的端口）。
检查你的Django环境配置中的端口号 - 可能Django正在尝试连接到监听在不同端口上的`PostgreSQL`服务器。
<details>
<summary>英文:</summary>
Even if `psql` client is connected to a newer version of `PostgreSQL` server, there might be additional `PostgreSQL` servers running on your machine. 
You can find them by running `ps auxwww | grep postgres`.
Each running server listens on a distinct port number. Because `psql` client is connecting to `PostgreSQL@14.7`, this server is probably running on the port 5432 (that is the default port `psql` is connecting to). 
Check your Django env config for the port number - probably Django is trying to connect to `PostgreSQL` server listening on a different port.   
</details>