# Prisma 5.3.0 — Release & Upgrade Intelligence
- **Product:** Prisma (https://prisma.io)
- **Version:** 5.3.0
- **Released:** Sep 13, 2023
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/prisma/updates/5.3.0/

## Executive Summary (TL;DR)
Prisma 5.3.0. Source highlight: 🌟 **Help us spread the word about Prisma by starring the repo or tweeting about the release.** 🌟

## New Features
- Metrics Preview feature improvements:
- Added the `PRISMA_SCHEMA_DISABLE_ADVISORY_LOCK` environment variable that enables you to disable advisory locking.
- Added support for rendering multi-line comments in tooltips when hovering on a block.
- Added a Code Action that allows you to replace `SetDefault` with `NoAction` when using MySQL and the default/`foreignKeys` relation mode.
- In the metrics feature a gauge & counter are swapped

## Improvements
- Validation for `undefined` values in arrays in `Json` fields
- Performance improvements for models with many unique fields: This release improves Prisma Client’s memory consumption for models with many `@unique` constraints. This was a regression from version 4.10.1, where in some cases, if a model had many unique constraints, Prisma Client would use up a lot of available memory.
- We updated the counters and gauge properties
- Improved the auto-completion for composite types in other blocks.

## Bug Fixes
- Fixed the segmentation fault error that used to occur on ARM64 Linux binary targets
- We fixed the bug that caused the `prisma_pool_connections_open` metric to have a negative value in some cases.
- Fixed an introspection bug for MongoDB views. Previously, if a MongoDB database contained a view, `prisma db pull` would throw an error. We resolved this, and views are now ignored.
- The prisma metrics `prisma_pool_connections_open` has a bug where it goes negative
- Add VS Code quick fix / code action to replace `SetDefault` with `NoAction` when `provider = "mysql"` and `relationMode = "foreignKeys" | default`

## Upgrade Command
```bash
npm install --save-dev --save-exact prisma@5.3.0
```