> For the complete documentation index, see [llms.txt](https://help.screena.ai/resources/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.screena.ai/resources/how-to/start-screena-portal/starting-postgresql-database.md).

# Starting PostgreSQL database

{% hint style="info" %}
Please follow the steps to restart Screena Portal in this order:

1. [**Starting PostgreSQL database**](/resources/how-to/start-screena-portal/starting-postgresql-database.md) **(you are here)**
2. [Starting Apache HTTP server](/resources/how-to/start-screena-portal/starting-apache-http-server.md)
3. [Starting Screena application](/resources/how-to/start-screena-portal/starting-screena-application.md)
   {% endhint %}

Enter this command to start PostgreSQL database:

```shell
sudo systemctl start postgresql
```