Common Issues database

Data Not Saving to Database in My AI App

You fill out a form or perform an action in your app, it looks like it works, but when you refresh the page the data is gone. The database isn't saving anything, or data disappears after a page reload.

Error Messages You Might See

new row violates row-level security policy relation does not exist column does not exist 42501: permission denied 23505: duplicate key value violates unique constraint

Common Causes

Database connection is failing silently
Row Level Security (RLS) policies are blocking inserts/updates
The app is saving to local state but not making the API call to the database
Database table structure doesn't match what the app is trying to save
Missing or wrong database URL in production environment variables

How to Fix It

Open browser Network tab (F12 > Network) and watch for API calls when you submit data — check for errors
If using Supabase, go to the SQL editor and check if the table exists and has the right columns
Check RLS policies — they're the #1 cause of data not saving in Supabase apps
Verify your database connection string in environment variables
Check the server/API logs for database errors

Real developers can help you.

Daniel Vázquez Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.

Sage Fulcher Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)

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MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.

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Simon A. I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.

Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/

ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.

BurnHavoc Been around fixing other peoples code for 20 years.

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Frequently Asked Questions

Data saves but disappears after refresh. What's happening?

The app is probably saving to local state (React state, for example) but not actually calling the database API. Check the Network tab for API calls when you submit.

I see a 'row-level security' error. What does that mean?

RLS is a Supabase feature that controls who can read/write data. The AI probably created tables without proper RLS policies. You need to add policies that allow your users to insert and read their own data.