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Aug 4, 2025
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docs: Add note about Heroku SSL connection #7039

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Add note about Heroku SSL connection
patjakubik Jul 30, 2025
ec18215
Merge branch 'main' into patch-1
aidankmcalister Aug 4, 2025
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12 changes: 12 additions & 0 deletions ...0-orm/200-prisma-client/500-deployment/101-traditional/200-deploy-to-heroku.mdx
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Expand Up @@ -269,6 +269,18 @@ const server = app.listen(PORT, () => {

- **Database URL**: As part of Heroku's provisioning process, a `DATABASE_URL` config var is added to your app’s configuration. This contains the URL your app uses to access the database. Ensure that your `schema.prisma` file uses `env("DATABASE_URL")` so that Prisma Client can successfully connect to the database.

* **Disable SSL certificate validation**: When using the `PrismaPg` adapter with `DATABASE_URL`, make sure to disable SSL certificate validation in line with [Heroku's guidelines](https://devcenter.heroku.com/articles/connecting-heroku-postgres#connecting-in-node-js). Failing to do so can result in a `P1010 DriverAdapterError: DatabaseAccessDenied` error. You can handle this conditionally based on whether the database is local or hosted on Heroku:

```js
const isSecureDb = !process.env.DATABASE_URL.includes("@127.0.0.1")

export const db = new PrismaClient({
adapter: new PrismaPg({
connectionString: process.env.DATABASE_URL + (isSecureDb ? `?sslmode=no-verify` : "")
})
})
```

## Summary

Congratulations! You have successfully deployed a Node.js app with Prisma ORM to Heroku.
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