# Launching Screena Portal backend

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Please follow the steps to install Screena Portal in this order:

1. [Preparing your system](https://help.screena.ai/resources/how-to/install-screena-portal/preparing-your-system)
2. [Installing Screena Portal backend](https://help.screena.ai/resources/how-to/install-screena-portal/installing-screena-portal-backend)
3. [**Launching Screena Portal backend**](https://help.screena.ai/resources/how-to/install-screena-portal/launching-screena-portal-backend) **(you are here)**
4. [Installing the web server](https://help.screena.ai/resources/how-to/install-screena-portal/installing-the-web-server)
5. [Configuring Screena Portal](https://help.screena.ai/resources/how-to/install-screena-portal/configuring-screena-portal)
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Open a terminal or command prompt and navigate to the `<Screena portal home>` directory. Run the following command:

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```shell
nohup java -Xms2048m -Xmx4096m -Dproperties.path=<Screena portal home> -Dfile.encoding=UTF-8 -Djasypt.encryptor.password=screena -jar screena-portal-1.0-spring-boot.jar & < /dev/null
```

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* At first launch, all the database collections with their associated indexes will be created, including the default admin user.
* The apigw\.pid file will contain the process number.
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