It is not possible to prevent the automatic deletion of a temporary staging database. If you need ongoing access to the data, the recommended approach is to keep regular backups and restore them to a permanent staging or development environment when required.

Hope it helps

You can reply like this:

Hello,

That warning is normal for Odoo.sh staging databases.

Staging databases are temporary, automatically deleted after some time, and are not automatically backed up. If you want to preserve the data, the correct step is to download/create a manual backup before the staging database expires.

To restore it later:

1. Keep the backup file safely on your local system.

2. Create/rebuild a new staging branch in Odoo.sh.

3. Go to the new branch in Odoo.sh.

4. Open the Backups tab.

5. Use Import Database and upload your backup.

6. Wait for the import to finish.

7. Open the restored database from the branch history/connect button.

Important: do not store important production data only in staging. If the data is important, move it to production or keep regular manual backups.

So yes, once the current staging database is deleted, you can restore your saved backup into a newly created staging environment using the import database option.

Odoo’s documentation confirms that staging/development databases are not automatically backed up, staging databases are automatically deleted after a period, and Odoo.sh supports importing database backups from the branch Backups tab. (odoo.com)